Changelog 30.6 KB
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releases are sorted from youngest to oldest.

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version <next>:

- XWD encoder and decoder
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- Support for fragmentation in the mov/mp4 muxer
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- ISMV (Smooth Streaming) muxer
Paul B Mahol's avatar
Paul B Mahol committed
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- CDXL demuxer and decoder
Kostya Shishkov's avatar
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- Apple ProRes encoder
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- Sun Rasterfile Encoder
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- remove libpostproc
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- ID3v2 attached pictures reading and writing
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- WMA Lossless decoder
Paul B Mahol's avatar
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- XBM encoder
Kostya Shishkov's avatar
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- RealAudio Lossless decoder
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- ZeroCodec decoder
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- drop support for avconv without libavfilter
Justin Ruggles's avatar
Justin Ruggles committed
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- add libavresample audio conversion library
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- audio filters support in libavfilter and avconv
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- add fps filter
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- audio split filter
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- audio mix filter
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- avprobe output is now standard INI or JSON. The old format can still
  be used with -of old.
Kostya Shishkov's avatar
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- Indeo Audio decoder
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- channelsplit audio filter
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- RTMPT protocol support
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- iLBC encoding/decoding via libilbc
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- Microsoft Screen 1 decoder
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- join audio filter
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- audio channel mapping filter
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- Microsoft ATC Screen decoder
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- RTSP listen mode
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- TechSmith Screen Codec 2 decoder
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- AAC encoding via libfdk-aac
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- Microsoft Expression Encoder Screen decoder
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- RTMPS protocol support
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- RTMPTS protocol support
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- JPEG 2000 encoding support through OpenJPEG
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- G.723.1 demuxer and decoder
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- RTMPE protocol support
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- RTMPTE protocol support
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- Canopus Lossless Codec decoder
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- avconv -shortest option is now per-output file,
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  -pass and -passlogfile are now per-output stream
Jan Ekström's avatar
Jan Ekström committed
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- Ut Video encoder
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- Microsoft Screen 2 decoder
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version 0.8:
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- GSM audio parser
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- SMJPEG muxer
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version 0.8_beta2:
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- Automatic thread count based on detection number of (available) CPU cores
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- Deprecate libpostproc. If desired, the switch --enable-postproc will
  enable it but it may be removed in a later Libav release.
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- rv34: frame-level multi-threading
- optimized iMDCT transform on x86 using SSE for for mpegaudiodec
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version 0.8_beta1:

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- BWF muxer
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- Flash Screen Video 2 decoder
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- ffplay/ffprobe/ffserver renamed to avplay/avprobe/avserver
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- ffmpeg deprecated, added avconv, which is almost the same for now, except
for a few incompatible changes in the options, which will hopefully make them
easier to use. The changes are:
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    * The options placement is now strictly enforced! While in theory the
      options for ffmpeg should be given in [input options] -i INPUT [output
      options] OUTPUT order, in practice it was possible to give output options
      before the -i and it mostly worked. Except when it didn't - the behavior was
      a bit inconsistent. In avconv, it is not possible to mix input and output
      options. All non-global options are reset after an input or output filename.
    * All per-file options are now truly per-file - they apply only to the next
      input or output file and specifying different values for different files
      will now work properly (notably -ss and -t options).
    * All per-stream options are now truly per-stream - it is possible to
      specify which stream(s) should a given option apply to. See the Stream
      specifiers section in the avconv manual for details.
    * In ffmpeg some options (like -newvideo/-newaudio/...) are irregular in the
      sense that they're specified after the output filename instead of before,
      like all other options. In avconv this irregularity is removed, all options
      apply to the next input or output file.
    * -newvideo/-newaudio/-newsubtitle options were removed. Not only were they
      irregular and highly confusing, they were also redundant. In avconv the -map
      option will create new streams in the output file and map input streams to
      them. E.g. avconv -i INPUT -map 0 OUTPUT will create an output stream for
      each stream in the first input file.
    * The -map option now has slightly different and more powerful syntax:
        + Colons (':') are used to separate file index/stream type/stream index
          instead of dots. Comma (',') is used to separate the sync stream instead
          of colon.. This is done for consistency with other options.
        + It's possible to specify stream type. E.g. -map 0:a:2 creates an
          output stream from the third input audio stream.
        + Omitting the stream index now maps all the streams of the given type,
          not just the first. E.g. -map 0:s creates output streams for all the
          subtitle streams in the first input file.
        + Since -map can now match multiple streams, negative mappings were
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          introduced. Negative mappings disable some streams from an already
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          defined map. E.g. '-map 0 -map -0:a:1' means 'create output streams for
          all the stream in the first input file, except for the second audio
          stream'.
    * There is a new option -c (or -codec) for choosing the decoder/encoder to
      use, which allows to precisely specify target stream(s) consistently with
      other options. E.g. -c:v lib264 sets the codec for all video streams, -c:a:0
      libvorbis sets the codec for the first audio stream and -c copy copies all
      the streams without reencoding. Old -vcodec/-acodec/-scodec options are now
      aliases to -c:v/a/s
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    * It is now possible to precisely specify which stream should an AVOption
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      apply to. E.g. -b:v:0 2M sets the bitrate for the first video stream, while
      -b:a 128k sets the bitrate for all audio streams. Note that the old -ab 128k
      syntax is deprecated and will stop working soon.
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    * -map_chapters now takes only an input file index and applies to the next
      output file. This is consistent with how all the other options work.
    * -map_metadata now takes only an input metadata specifier and applies to
      the next output file. Output metadata specifier is now part of the option
      name, similarly to the AVOptions/map/codec feature above.
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    * -metadata can now be used to set metadata on streams and chapters, e.g.
      -metadata:s:1 language=eng sets the language of the first stream to 'eng'.
      This made -vlang/-alang/-slang options redundant, so they were removed.
    * -qscale option now uses stream specifiers and applies to all streams, not
      just video. I.e. plain -qscale number would now apply to all streams. To get
      the old behavior, use -qscale:v. Also there is now a shortcut -q for -qscale
      and -aq is now an alias for -q:a.
    * -vbsf/-absf/-sbsf options were removed and replaced by a -bsf option which
      uses stream specifiers. Use -bsf:v/a/s instead of the old options.
    * -itsscale option now uses stream specifiers, so its argument is only the
      scale parameter.
    * -intra option was removed, use -g 0 for the same effect.
    * -psnr option was removed, use -flags +psnr for the same effect.
    * -vf option is now an alias to the new -filter option, which uses stream specifiers.
    * -vframes/-aframes/-dframes options are now aliases to the new -frames option.
    * -vtag/-atag/-stag options are now aliases to the new -tag option.
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- XMV demuxer
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- Windows Media Image decoder
Janne Grunau's avatar
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- LATM muxer/demuxer
Stefano Sabatini's avatar
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- showinfo filter
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- split filter
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- libcdio-paranoia input device for audio CD grabbing
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- select filter
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- Apple ProRes decoder
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- CELT in Ogg demuxing
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- VC-1 interlaced decoding
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- lut, lutrgb, and lutyuv filters
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- boxblur filter
Kostya Shishkov's avatar
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- Ut Video decoder
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- Speex encoding via libspeex
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- 4:2:2 H.264 decoding support
Anton Khirnov's avatar
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- 4:2:2 and 4:4:4 H.264 encoding with libx264
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- Pulseaudio input device
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- replacement Indeo 3 decoder
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- TLS/SSL and HTTPS protocol support
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- AVOptions API rewritten and documented
- most of CODEC_FLAG2_*, some CODEC_FLAG_* and many codec-specific fields in
  AVCodecContext deprecated. Codec private options should be used instead.
- Properly working defaults in libx264 wrapper, support for native presets.
- Encrypted OMA files support
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- Discworld II BMV decoding support
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- VBLE Decoder
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- OS X Video Decoder Acceleration (VDA) support
Justin Ruggles's avatar
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- CRI ADX audio format muxer and demuxer
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- Playstation Portable PMP format demuxer
David Goldwich's avatar
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- PCM format support in OMA demuxer
Paul B Mahol's avatar
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- CLJR encoder
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- Dxtory capture format decoder
Derek Buitenhuis's avatar
Derek Buitenhuis committed
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- v410 QuickTime uncompressed 4:4:4 10-bit encoder and decoder
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- OpenMG Audio muxer
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- Simple segmenting muxer
Reinhard Tartler's avatar
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- Indeo 4 decoder
- SMJPEG demuxer
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version 0.7:
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- E-AC-3 audio encoder
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- ac3enc: add channel coupling support
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- floating-point sample format support for (E-)AC-3, DCA, AAC, Vorbis decoders
- H.264/MPEG frame-level multithreading
- av_metadata_* functions renamed to av_dict_* and moved to libavutil
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- 4:4:4 H.264 decoding support
- 10-bit H.264 optimizations for x86
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- bump libswscale for recently reported ABI break
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version 0.7_beta2:

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- VP8 frame-level multithreading
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- NEON optimizations for VP8
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- removed a lot of deprecated API cruft
- FFT and IMDCT optimizations for AVX (Sandy Bridge) processors
Peter Ross's avatar
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- DPX image encoder
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- SMPTE 302M AES3 audio decoder
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- ffmpeg no longer quits after the 'q' key is pressed; use 'ctrl+c' instead
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- 9bit and 10bit per sample support in the H.264 decoder
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version 0.7_beta1:

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- WebM support in Matroska de/muxer
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- low overhead Ogg muxing
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- MMS-TCP support
James Zern's avatar
James Zern committed
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- VP8 de/encoding via libvpx
David Conrad's avatar
David Conrad committed
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- Demuxer for On2's IVF format
Peter Ross's avatar
Peter Ross committed
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- Pictor/PC Paint decoder
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- HE-AAC v2 decoder
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- libfaad2 wrapper removed
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- DTS-ES extension (XCh) decoding support
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- native VP8 decoder
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- RTSP tunneling over HTTP
Josh Allmann's avatar
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- RTP depacketization of SVQ3
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- -strict inofficial replaced by -strict unofficial
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- ffplay -exitonkeydown and -exitonmousedown options added
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- native GSM / GSM MS decoder
Josh Allmann's avatar
Josh Allmann committed
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- RTP depacketization of QDM2
Peter Ross's avatar
Peter Ross committed
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- ANSI/ASCII art playback system
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- Lego Mindstorms RSO de/muxer
Aurelien Jacobs's avatar
Aurelien Jacobs committed
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- SubRip subtitle file muxer and demuxer
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- Chinese AVS encoding via libxavs
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- ffprobe -show_packets option added
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- RTP packetization of Theora and Vorbis
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- RTP depacketization of MP4A-LATM
Josh Allmann's avatar
Josh Allmann committed
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- RTP packetization and depacketization of VP8
Stefano Sabatini's avatar
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- hflip filter
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- Apple HTTP Live Streaming demuxer
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- a64 codec
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- MMS-HTTP support
Martin Storsjö's avatar
Martin Storsjö committed
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- G.722 ADPCM audio encoder/decoder
Zhou Zongyi's avatar
Zhou Zongyi committed
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- R10k video decoder
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- ocv_smooth filter
Stefano Sabatini's avatar
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- frei0r wrapper filter
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- change crop filter syntax to width:height:x:y
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- make the crop filter accept parametric expressions
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- make ffprobe accept AVFormatContext options
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- yadif filter
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- blackframe filter
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- Demuxer for Leitch/Harris' VR native stream format (LXF)
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- RTP depacketization of the X-QT QuickTime format
Martin Storsjö's avatar
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- SAP (Session Announcement Protocol, RFC 2974) muxer and demuxer
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- cropdetect filter
Stefano Sabatini's avatar
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- ffmpeg -crop* options removed
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- transpose filter added
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- ffmpeg -force_key_frames option added
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- demuxer for receiving raw rtp:// URLs without an SDP description
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- single stream LATM/LOAS decoder
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- setpts filter added
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- Win64 support for optimized x86 assembly functions
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- MJPEG/AVI1 to JPEG/JFIF bitstream filter
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- ASS subtitle encoder and decoder
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- IEC 61937 encapsulation for E-AC-3, TrueHD, DTS-HD (for HDMI passthrough)
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- overlay filter added
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- rename aspect filter to setdar, and pixelaspect to setsar
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- IEC 61937 demuxer
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- Mobotix .mxg demuxer
Stefano Sabatini's avatar
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- frei0r source added
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- hqdn3d filter added
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- RTP depacketization of QCELP
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- FLAC parser added
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- gradfun filter added
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- AMR-WB decoder
Stefano Sabatini's avatar
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- replace the ocv_smooth filter with a more generic ocv filter
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- Windows Televison (WTV) demuxer
Anton Khirnov's avatar
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- FFmpeg metadata format muxer and demuxer
Aurelien Jacobs's avatar
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- SubRip (srt) subtitle decoder
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- floating-point AC-3 encoder added
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- Lagarith decoder
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- ffmpeg -copytb option added
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- IVF muxer added
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- Wing Commander IV movies decoder added
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- movie source added
Peter Ross's avatar
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- Bink version 'b' audio and video decoder
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- Bitmap Brothers JV playback system
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- Apple HTTP Live Streaming protocol handler
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- sndio support for playback and record
Stefano Sabatini's avatar
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- Linux framebuffer input device added
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- Chronomaster DFA decoder
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- Mobotix MxPEG decoder
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- AAC encoding via libvo-aacenc
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- AMR-WB encoding via libvo-amrwbenc
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- xWMA demuxer
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- fieldorder video filter added
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version 0.6:

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- PB-frame decoding for H.263
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- deprecated vhook subsystem removed
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- deprecated old scaler removed
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- VQF demuxer
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- Alpha channel scaler
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- PCX encoder
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- RTP packetization of H.263
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- RTP packetization of AMR
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- RTP depacketization of Vorbis
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- CorePNG decoding support
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- Cook multichannel decoding support
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- introduced avlanguage helpers in libavformat
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- 8088flex TMV demuxer and decoder
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- per-stream language-tags extraction in asfdec
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- V210 decoder and encoder
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- remaining GPL parts in AC-3 decoder converted to LGPL
Kenan Gillet's avatar
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- QCP demuxer
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- SoX native format muxer and demuxer
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- AMR-NB decoding/encoding, AMR-WB decoding via OpenCORE libraries
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- DPX image decoder
Peter Ross's avatar
Peter Ross committed
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- Electronic Arts Madcow decoder
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- DivX (XSUB) subtitle encoder
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- nonfree libamr support for AMR-NB/WB decoding/encoding removed
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- experimental AAC encoder
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- RTP depacketization of ASF and RTSP from WMS servers
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- RTMP support in libavformat
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- noX handling for OPT_BOOL X options
Daniel Verkamp's avatar
Daniel Verkamp committed
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- Wave64 demuxer
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- IEC-61937 compatible Muxer
Vitor Sessak's avatar
Vitor Sessak committed
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- TwinVQ decoder
Stephen Backway's avatar
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- Bluray (PGS) subtitle decoder
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- LPCM support in MPEG-TS (HDMV RID as found on Blu-ray disks)
Diego Biurrun's avatar
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- WMA Pro decoder
Peter Ross's avatar
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- Core Audio Format demuxer
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- Atrac1 decoder
- MD STUDIO audio demuxer
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- RF64 support in WAV demuxer
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- MPEG-4 Audio Lossless Coding (ALS) decoder
Daniel Verkamp's avatar
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- -formats option split into -formats, -codecs, -bsfs, and -protocols
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- IV8 demuxer
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- CDG demuxer and decoder
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- R210 decoder
Kostya Shishkov's avatar
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- Auravision Aura 1 and 2 decoders
Peter Ross's avatar
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- Deluxe Paint Animation playback system
Vitor Sessak's avatar
Vitor Sessak committed
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- SIPR decoder
Peter Ross's avatar
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- Adobe Filmstrip muxer and demuxer
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- RTP depacketization of H.263
Kostya Shishkov's avatar
Kostya Shishkov committed
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- Bink demuxer and audio/video decoders
Reinhard Tartler's avatar
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- enable symbol versioning by default for linkers that support it
Peter Ross's avatar
Peter Ross committed
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- IFF PBM/ILBM bitmap decoder
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- concat protocol
Kostya Shishkov's avatar
Kostya Shishkov committed
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- Indeo 5 decoder
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- RTP depacketization of AMR
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- WMA Voice decoder
- ffprobe tool
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- AMR-NB decoder
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- RTSP muxer
Alex Converse's avatar
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- HE-AAC v1 decoder
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- Kega Game Video (KGV1) decoder
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- VorbisComment writing for FLAC, Ogg FLAC and Ogg Speex files
Josh Allmann's avatar
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- RTP depacketization of Theora
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- HTTP Digest authentication
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- RTMP/RTMPT/RTMPS/RTMPE/RTMPTE protocol support via librtmp
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- Psygnosis YOP demuxer and video decoder
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- spectral extension support in the E-AC-3 decoder
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- unsharp video filter
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- RTP hinting in the mov/3gp/mp4 muxer
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- Dirac in Ogg demuxing
- seek to keyframes in Ogg
- 4:2:2 and 4:4:4 Theora decoding
- 35% faster VP3/Theora decoding
- faster AAC decoding
- faster H.264 decoding
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- RealAudio 1.0 (14.4K) encoder
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Diego Biurrun's avatar
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version 0.5:

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- DV50 AKA DVCPRO50 encoder, decoder, muxer and demuxer
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- TechSmith Camtasia (TSCC) video decoder
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- IBM Ultimotion (ULTI) video decoder
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- Sierra Online audio file demuxer and decoder
- Apple QuickDraw (qdrw) video decoder
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- Creative ADPCM audio decoder (16 bits as well as 8 bits schemes)
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- Electronic Arts Multimedia (WVE/UV2/etc.) file demuxer
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- Miro VideoXL (VIXL) video decoder
Mike Melanson's avatar
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- H.261 video encoder
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- QPEG video decoder
Mike Melanson's avatar
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- Nullsoft Video (NSV) file demuxer
Mike Melanson's avatar
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- Shorten audio decoder
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- LOCO video decoder
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- Apple Lossless Audio Codec (ALAC) decoder
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- Winnov WNV1 video decoder
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- Autodesk Animator Studio Codec (AASC) decoder
Diego Biurrun's avatar
Indeo 2  
Diego Biurrun committed
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- Indeo 2 video decoder
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- Fraps FPS1 video decoder
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- Snow video encoder/decoder
Alex Beregszaszi's avatar
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- Sonic audio encoder/decoder
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- Vorbis audio decoder
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- Macromedia ADPCM decoder
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- Duck TrueMotion 2 video decoder
- support for decoding FLX and DTA extensions in FLIC files
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- H.264 custom quantization matrices support
Diego Biurrun's avatar
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- ffserver fixed, it should now be usable again
Diego Biurrun's avatar
QDM2  
Diego Biurrun committed
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- QDM2 audio decoder
Alex Beregszaszi's avatar
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- Real Cooker audio decoder
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- TrueSpeech audio decoder
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- WMA2 audio decoder fixed, now all files should play correctly
- RealAudio 14.4 and 28.8 decoders fixed
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- JPEG-LS decoder
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updates  
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- build system improvements
- tabs and trailing whitespace removed from the codebase
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- CamStudio video decoder
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- AIFF/AIFF-C audio format, encoding and decoding
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- ADTS AAC file reading and writing
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- Creative VOC file reading and writing
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- American Laser Games multimedia (*.mm) playback system
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- Zip Motion Blocks Video decoder
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- improved Theora/VP3 decoder
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- True Audio (TTA) decoder
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- AVS demuxer and video decoder
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- JPEG-LS encoder
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- Smacker demuxer and decoder
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- NuppelVideo/MythTV demuxer and RTjpeg decoder
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- KMVC decoder
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- MPEG-2 intra VLC support
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- MPEG-2 4:2:2 encoder
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- Flash Screen Video decoder
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- GXF demuxer
Diego Biurrun's avatar
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- Chinese AVS decoder
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- GXF muxer
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- MXF demuxer
Diego Biurrun's avatar
Diego Biurrun committed
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- VC-1/WMV3/WMV9 video decoder
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- MacIntel support
425
- AVISynth support
426
- VMware video decoder
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- VP5 video decoder
- VP6 video decoder
429
- WavPack lossless audio decoder
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Kostya Shishkov committed
430
- Targa (.TGA) picture decoder
431
- Vorbis audio encoder
432
- Delphine Software .cin demuxer/audio and video decoder
433
- Tiertex .seq demuxer/video decoder
434
- MTV demuxer
435
- TIFF picture encoder and decoder
436
- GIF picture decoder
437
- Intel Music Coder decoder
438
- Zip Motion Blocks Video encoder
439
- Musepack decoder
440
- Flash Screen Video encoder
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- Theora encoding via libtheora
442
- BMP encoder
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- WMA encoder
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- GSM-MS encoder and decoder
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- DCA decoder
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- DXA demuxer and decoder
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447
- DNxHD decoder
448
- Gamecube movie (.THP) playback system
449
- Blackfin optimizations
450
- Interplay C93 demuxer and video decoder
451
- Bethsoft VID demuxer and video decoder
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- CRYO APC demuxer
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- Atrac3 decoder
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454
- V.Flash PTX decoder
455
- RoQ muxer, RoQ audio encoder
456
- Renderware TXD demuxer and decoder
457
- extern C declarations for C++ removed from headers
458
- sws_flags command line option
459
- codebook generator
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- RoQ video encoder
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- QTRLE encoder
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- OS/2 support removed and restored again
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- AC-3 decoder
464
- NUT muxer
465
- additional SPARC (VIS) optimizations
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- Matroska muxer
467
- slice-based parallel H.264 decoding
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468
- Monkey's Audio demuxer and decoder
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- AMV audio and video decoder
470
- DNxHD encoder
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- H.264 PAFF decoding
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- Nellymoser ASAO decoder
473
- Beam Software SIFF demuxer and decoder
474
- libvorbis Vorbis decoding removed in favor of native decoder
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- IntraX8 (J-Frame) subdecoder for WMV2 and VC-1
476
- Ogg (Theora, Vorbis and FLAC) muxer
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- The "device" muxers and demuxers are now in a new libavdevice library
478 479
- PC Paintbrush PCX decoder
- Sun Rasterfile decoder
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480
- TechnoTrend PVA demuxer
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- Linux Media Labs MPEG-4 (LMLM4) demuxer
482
- AVM2 (Flash 9) SWF muxer
483
- QT variant of IMA ADPCM encoder
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484
- VFW grabber
485
- iPod/iPhone compatible mp4 muxer
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486
- Mimic decoder
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487
- MSN TCP Webcam stream demuxer
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488
- RL2 demuxer / decoder
489 490
- IFF demuxer
- 8SVX audio decoder
491
- non-recursive Makefiles
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492
- BFI demuxer
493
- MAXIS EA XA (.xa) demuxer / decoder
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- BFI video decoder
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- OMA demuxer
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- MLP/TrueHD decoder
497
- Electronic Arts CMV decoder
498 499
- Motion Pixels Video decoder
- Motion Pixels MVI demuxer
500
- removed animated GIF decoder/demuxer
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- D-Cinema audio muxer
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- Electronic Arts TGV decoder
503
- Apple Lossless Audio Codec (ALAC) encoder
504
- AAC decoder
505
- floating point PCM encoder/decoder
506
- MXF muxer
507
- DV100 AKA DVCPRO HD decoder and demuxer
508
- E-AC-3 support added to AC-3 decoder
509
- Nellymoser ASAO encoder
510
- ASS and SSA demuxer and muxer
511
- liba52 wrapper removed
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- SVQ3 watermark decoding support
513
- Speex decoding via libspeex
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- Electronic Arts TGQ decoder
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- RV40 decoder
516
- QCELP / PureVoice decoder
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- RV30 decoder
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- hybrid WavPack support
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- R3D REDCODE demuxer
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- ALSA support for playback and record
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- Electronic Arts TQI decoder
522
- OpenJPEG based JPEG 2000 decoder
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- NC (NC4600) camera file demuxer
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- Gopher client support
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- MXF D-10 muxer
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- generic metadata API

528

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version 0.4.9-pre1:

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- DV encoder, DV muxer
532 533
- Microsoft RLE video decoder
- Microsoft Video-1 decoder
534
- Apple Animation (RLE) decoder
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- Apple Graphics (SMC) decoder
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- Apple Video (RPZA) decoder
- Cinepak decoder
- Sega FILM (CPK) file demuxer
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539
- Westwood multimedia support (VQA & AUD files)
540
- Id Quake II CIN playback support
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- 8BPS video decoder
- FLIC playback support
543 544
- RealVideo 2.0 (RV20) decoder
- Duck TrueMotion v1 (DUCK) video decoder
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- Sierra VMD demuxer and video decoder
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- MSZH and ZLIB decoder support
547
- SVQ1 video encoder
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- AMR-WB support
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- PPC optimizations
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- rate distortion optimal cbp support
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- rate distorted optimal ac prediction for MPEG-4
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- rate distorted optimal lambda->qp support
- AAC encoding with libfaac
- Sunplus JPEG codec (SP5X) support
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- use Lagrange multipler instead of QP for ratecontrol
- Theora/VP3 decoding support
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- XA and ADX ADPCM codecs
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- export MPEG-2 active display area / pan scan
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- Add support for configuring with IBM XLC
- floating point AAN DCT
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- initial support for zygo video (not complete)
- RGB ffv1 support
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- new audio/video parser API
- av_log() system
- av_read_frame() and av_seek_frame() support
- missing last frame fixes
- seek by mouse in ffplay
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- noise reduction of DCT coefficients
- H.263 OBMC & 4MV support
- H.263 alternative inter vlc support
- H.263 loop filter
- H.263 slice structured mode
- interlaced DCT support for MPEG-2 encoding
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- stuffing to stay above min_bitrate
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- MB type & QP visualization
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- frame stepping for ffplay
- interlaced motion estimation
- alternate scantable support
- SVCD scan offset support
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- closed GOP support
- SSE2 FDCT
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- quantizer noise shaping
- G.726 ADPCM audio codec
- MS ADPCM encoding
- multithreaded/SMP motion estimation
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- multithreaded/SMP encoding for MPEG-1/MPEG-2/MPEG-4/H.263
- multithreaded/SMP decoding for MPEG-2
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- FLAC decoder
- Metrowerks CodeWarrior suppport
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- H.263+ custom pcf support
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- nicer output for 'ffmpeg -formats'
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592
- Matroska demuxer
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593
- SGI image format, encoding and decoding
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- H.264 loop filter support
- H.264 CABAC support
596
- nicer looking arrows for the motion vector visualization
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- improved VCD support
- audio timestamp drift compensation
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- MPEG-2 YUV 422/444 support
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- polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
- better image scaling
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- H.261 support
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- correctly interleave packets during encoding
- VIS optimized motion compensation
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- intra_dc_precision>0 encoding support
- support reuse of motion vectors/MB types/field select values of the source video
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- more accurate deblock filter
- padding support
- many optimizations and bugfixes
610
- FunCom ISS audio file demuxer and according ADPCM decoding
611

612

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version 0.4.8:

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- MPEG-2 video encoding (Michael)
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Tim  
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- Id RoQ playback subsystem (Mike Melanson and Tim Ferguson)
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- Wing Commander III Movie (.mve) file playback subsystem (Mike Melanson
  and Mario Brito)
- Xan DPCM audio decoder (Mario Brito)
620
- Interplay MVE playback subsystem (Mike Melanson)
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- Duck DK3 and DK4 ADPCM audio decoders (Mike Melanson)

623

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version 0.4.7:
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- RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders. Author unknown, code from mplayerhq
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  (originally from public domain player for Amiga at http://www.honeypot.net/audio)
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- current version now also compiles with older GCC (Fabrice)
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- 4X multimedia playback system including 4xm file demuxer (Mike
  Melanson), and 4X video and audio codecs (Michael)
- Creative YUV (CYUV) decoder (Mike Melanson)
- FFV1 codec (our very simple lossless intra only codec, compresses much better
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  than HuffYUV) (Michael)
- ASV1 (Asus), H.264, Intel indeo3 codecs have been added (various)
- tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
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  alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
- ffplay has been replaced with a newer version which uses SDL (optionally)
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  for multiplatform support (Fabrice)
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- Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
  by anonymous
- AMR format has been added (Johannes Carlsson)
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- 3GP support has been added (Johannes Carlsson)
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- VP3 codec has been added (Mike Melanson)
- more MPEG-1/2 fixes
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- better multiplatform support, MS Visual Studio fixes (various)
- AltiVec optimizations (Magnus Damn and others)
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- SH4 processor support has been added (BERO)
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- new public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
- VOB streaming support (Brian Foley)
- better MP3 autodetection (Andriy Rysin)
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- qpel encoding (Michael)
- 4mv+b frames encoding finally fixed (Michael)
- chroma ME (Michael)
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- 5 comparison functions for ME (Michael)
- B-frame encoding speedup (Michael)
- WMV2 codec (unfinished - Michael)
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- user specified diamond size for EPZS (Michael)
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- Playstation STR playback subsystem, still experimental (Mike and Michael)
- ASV2 codec (Michael)
- CLJR decoder (Alex)
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.. And lots more new enhancements and fixes.
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version 0.4.6:
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- completely new integer only MPEG audio layer 1/2/3 decoder rewritten
  from scratch
- Recoded DCT and motion vector search with gcc (no longer depends on nasm)
- fix quantization bug in AC3 encoder
- added PCM codecs and format. Corrected WAV/AVI/ASF PCM issues
- added prototype ffplay program
- added GOB header parsing on H.263/H.263+ decoder (Juanjo)
- bug fix on MCBPC tables of H.263 (Juanjo)
- bug fix on DC coefficients of H.263 (Juanjo)
- added Advanced Prediction Mode on H.263/H.263+ decoder (Juanjo)
- now we can decode H.263 streams found in QuickTime files (Juanjo)
- now we can decode H.263 streams found in VIVO v1 files(Juanjo)
679
- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
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