Changelog 18.6 KB
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Entries are sorted chronologically from oldest to youngest within each release,
releases are sorted from youngest to oldest.


5 6 7
version <next>:

- PB-frame decoding for H.263
8
- deprecated vhook subsystem removed
9
- deprecated old scaler removed
Vitor Sessak's avatar
Vitor Sessak committed
10
- VQF demuxer
11
- Alpha channel scaler
12
- PCX encoder
13
- RTP packetization of H.263
14
- RTP packetization of AMR
15
- RTP depacketization of Vorbis
16
- CorePNG decoding support
17
- Cook multichannel decoding support
18
- introduced avlanguage helpers in libavformat
19
- 8088flex TMV demuxer and decoder
20
- per-stream language-tags extraction in asfdec
21
- V210 decoder and encoder
22
- remaining GPL parts in AC-3 decoder converted to LGPL
Kenan Gillet's avatar
Kenan Gillet committed
23
- QCP demuxer
24
- SoX native format muxer and demuxer
25
- AMR-NB decoding/encoding, AMR-WB decoding via OpenCORE libraries
26
- DPX image decoder
Peter Ross's avatar
Peter Ross committed
27
- Electronic Arts Madcow decoder
28
- DivX (XSUB) subtitle encoder
29
- nonfree libamr support for AMR-NB/WB decoding/encoding removed
30
- Experimental AAC encoder
31
- RTP depacketization of ASF and RTSP from WMS servers
32
- RTMP support in libavformat
33
- noX handling for OPT_BOOL X options
Daniel Verkamp's avatar
Daniel Verkamp committed
34
- Wave64 demuxer
35
- IEC-61937 compatible Muxer
Vitor Sessak's avatar
Vitor Sessak committed
36
- TwinVQ decoder
Stephen Backway's avatar
Stephen Backway committed
37
- Bluray (PGS) subtitle decoder
38
- LPCM support in MPEG-TS (HDMV RID as found on Blu-ray disks)
39
- Wmapro decoder
Peter Ross's avatar
Peter Ross committed
40
- Core Audio Format demuxer
41 42
- Atrac1 decoder
- MD STUDIO audio demuxer
43
- RF64 support in WAV demuxer
44
- MPEG-4 Audio Lossless Coding (ALS) decoder
Daniel Verkamp's avatar
Daniel Verkamp committed
45
- -formats option split into -formats, -codecs, -bsfs, and -protocols
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- IV8 demuxer
Michael Tison's avatar
Michael Tison committed
47
- CDG demuxer and decoder
48
- R210 decoder
Kostya Shishkov's avatar
Kostya Shishkov committed
49
- Auravision Aura 1 and 2 decoders
Peter Ross's avatar
Peter Ross committed
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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
Peter Ross committed
52
- Adobe Filmstrip muxer and demuxer
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- RTP depacketization of H.263
Peter Ross's avatar
Peter Ross committed
54
- Bink demuxer and Bink Audio decoder
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Reinhard Tartler committed
55
- 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
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Diego Biurrun committed
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version 0.5:

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- DV50 AKA DVCPRO50 encoder, decoder, muxer and demuxer
64
- TechSmith Camtasia (TSCC) video decoder
65
- IBM Ultimotion (ULTI) video decoder
66 67
- Sierra Online audio file demuxer and decoder
- Apple QuickDraw (qdrw) video decoder
68
- Creative ADPCM audio decoder (16 bits as well as 8 bits schemes)
69
- Electronic Arts Multimedia (WVE/UV2/etc.) file demuxer
70
- Miro VideoXL (VIXL) video decoder
Mike Melanson's avatar
Mike Melanson committed
71
- H.261 video encoder
72
- QPEG video decoder
Mike Melanson's avatar
Mike Melanson committed
73
- Nullsoft Video (NSV) file demuxer
Mike Melanson's avatar
Mike Melanson committed
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- Shorten audio decoder
75
- LOCO video decoder
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- Apple Lossless Audio Codec (ALAC) decoder
77
- Winnov WNV1 video decoder
78
- Autodesk Animator Studio Codec (AASC) decoder
Diego Biurrun's avatar
Indeo 2  
Diego Biurrun committed
79
- Indeo 2 video decoder
80
- Fraps FPS1 video decoder
Diego Biurrun's avatar
Diego Biurrun committed
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- Snow video encoder/decoder
Alex Beregszaszi's avatar
Alex Beregszaszi committed
82
- Sonic audio encoder/decoder
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- Vorbis audio decoder
Alex Beregszaszi's avatar
Alex Beregszaszi committed
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- Macromedia ADPCM decoder
Diego Biurrun's avatar
Diego Biurrun committed
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- Duck TrueMotion 2 video decoder
- support for decoding FLX and DTA extensions in FLIC files
Loren Merritt's avatar
Loren Merritt committed
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- H.264 custom quantization matrices support
Diego Biurrun's avatar
Diego Biurrun committed
88
- 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
Alex Beregszaszi committed
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- Real Cooker audio decoder
91
- TrueSpeech audio decoder
Diego Biurrun's avatar
Diego Biurrun committed
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- WMA2 audio decoder fixed, now all files should play correctly
- RealAudio 14.4 and 28.8 decoders fixed
94
- JPEG-LS decoder
Diego Biurrun's avatar
updates  
Diego Biurrun committed
95 96
- build system improvements
- tabs and trailing whitespace removed from the codebase
97
- CamStudio video decoder
98
- AIFF/AIFF-C audio format, encoding and decoding
99
- ADTS AAC file reading and writing
Aurelien Jacobs's avatar
Aurelien Jacobs committed
100
- Creative VOC file reading and writing
101
- American Laser Games multimedia (*.mm) playback system
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- Zip Motion Blocks Video decoder
103
- improved Theora/VP3 decoder
Alex Beregszaszi's avatar
Alex Beregszaszi committed
104
- True Audio (TTA) decoder
105
- AVS demuxer and video decoder
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- JPEG-LS encoder
Kostya Shishkov's avatar
Kostya Shishkov committed
107
- Smacker demuxer and decoder
108
- NuppelVideo/MythTV demuxer and RTjpeg decoder
109
- KMVC decoder
110
- MPEG-2 intra VLC support
111
- MPEG-2 4:2:2 encoder
112
- Flash Screen Video decoder
Reimar Döffinger's avatar
Reimar Döffinger committed
113
- GXF demuxer
Diego Biurrun's avatar
Diego Biurrun committed
114
- Chinese AVS decoder
115
- GXF muxer
Baptiste Coudurier's avatar
Baptiste Coudurier committed
116
- MXF demuxer
Diego Biurrun's avatar
Diego Biurrun committed
117
- VC-1/WMV3/WMV9 video decoder
Guillaume Poirier's avatar
Guillaume Poirier committed
118
- MacIntel support
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- AVISynth support
120
- VMware video decoder
Aurelien Jacobs's avatar
Aurelien Jacobs committed
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- VP5 video decoder
- VP6 video decoder
123
- WavPack lossless audio decoder
Kostya Shishkov's avatar
Kostya Shishkov committed
124
- Targa (.TGA) picture decoder
125
- Vorbis audio encoder
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- Delphine Software .cin demuxer/audio and video decoder
127
- Tiertex .seq demuxer/video decoder
128
- MTV demuxer
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- TIFF picture encoder and decoder
130
- GIF picture decoder
131
- Intel Music Coder decoder
132
- Zip Motion Blocks Video encoder
133
- Musepack decoder
134
- Flash Screen Video encoder
Diego Biurrun's avatar
Diego Biurrun committed
135
- Theora encoding via libtheora
136
- BMP encoder
Diego Biurrun's avatar
Diego Biurrun committed
137
- WMA encoder
Michel Bardiaux's avatar
Michel Bardiaux committed
138
- GSM-MS encoder and decoder
Kostya Shishkov's avatar
Kostya Shishkov committed
139
- DCA decoder
Kostya Shishkov's avatar
Kostya Shishkov committed
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- DXA demuxer and decoder
Baptiste Coudurier's avatar
Baptiste Coudurier committed
141
- DNxHD decoder
142
- Gamecube movie (.THP) playback system
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- Blackfin optimizations
144
- Interplay C93 demuxer and video decoder
145
- Bethsoft VID demuxer and video decoder
Anssi Hannula's avatar
Anssi Hannula committed
146
- CRYO APC demuxer
Benjamin Larsson's avatar
Benjamin Larsson committed
147
- Atrac3 decoder
Ivo van Poorten's avatar
Ivo van Poorten committed
148
- V.Flash PTX decoder
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- RoQ muxer, RoQ audio encoder
150
- Renderware TXD demuxer and decoder
151
- extern C declarations for C++ removed from headers
152
- sws_flags command line option
153
- codebook generator
Vitor Sessak's avatar
Vitor Sessak committed
154
- RoQ video encoder
Alexis Ballier's avatar
Alexis Ballier committed
155
- QTRLE encoder
156
- OS/2 support removed and restored again
157
- AC-3 decoder
158
- NUT muxer
159
- additional SPARC (VIS) optimizations
David Conrad's avatar
David Conrad committed
160
- Matroska muxer
161
- slice-based parallel H.264 decoding
Kostya Shishkov's avatar
Kostya Shishkov committed
162
- Monkey's Audio demuxer and decoder
Vladimir Voroshilov's avatar
Vladimir Voroshilov committed
163
- AMV audio and video decoder
164
- DNxHD encoder
Carl Eugen Hoyos's avatar
Carl Eugen Hoyos committed
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- H.264 PAFF decoding
Benjamin Larsson's avatar
Benjamin Larsson committed
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- Nellymoser ASAO decoder
167
- Beam Software SIFF demuxer and decoder
168
- libvorbis Vorbis decoding removed in favor of native decoder
Diego Biurrun's avatar
Diego Biurrun committed
169
- IntraX8 (J-Frame) subdecoder for WMV2 and VC-1
170
- Ogg (Theora, Vorbis and FLAC) muxer
171
- The "device" muxers and demuxers are now in a new libavdevice library
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- PC Paintbrush PCX decoder
- Sun Rasterfile decoder
Ivo van Poorten's avatar
Ivo van Poorten committed
174
- TechnoTrend PVA demuxer
Ivo van Poorten's avatar
Ivo van Poorten committed
175
- Linux Media Labs MPEG-4 (LMLM4) demuxer
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- AVM2 (Flash 9) SWF muxer
177
- QT variant of IMA ADPCM encoder
Ramiro Polla's avatar
Ramiro Polla committed
178
- VFW grabber
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- iPod/iPhone compatible mp4 muxer
Ramiro Polla's avatar
Ramiro Polla committed
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- Mimic decoder
Ramiro Polla's avatar
Ramiro Polla committed
181
- MSN TCP Webcam stream demuxer
Sascha Sommer's avatar
Sascha Sommer committed
182
- RL2 demuxer / decoder
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- IFF demuxer
- 8SVX audio decoder
185
- non-recursive Makefiles
Sisir Koppaka's avatar
Sisir Koppaka committed
186
- BFI demuxer
187
- MAXIS EA XA (.xa) demuxer / decoder
Sisir Koppaka's avatar
Sisir Koppaka committed
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- BFI video decoder
Benjamin Larsson's avatar
Benjamin Larsson committed
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- OMA demuxer
Ramiro Polla's avatar
Ramiro Polla committed
190
- MLP/TrueHD decoder
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- Electronic Arts CMV decoder
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- Motion Pixels Video decoder
- Motion Pixels MVI demuxer
194
- removed animated GIF decoder/demuxer
Peter Ross's avatar
Peter Ross committed
195
- D-Cinema audio muxer
Peter Ross's avatar
Peter Ross committed
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- Electronic Arts TGV decoder
197
- Apple Lossless Audio Codec (ALAC) encoder
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- AAC decoder
199
- floating point PCM encoder/decoder
200
- MXF muxer
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- DV100 AKA DVCPRO HD decoder and demuxer
202
- E-AC-3 support added to AC-3 decoder
203
- Nellymoser ASAO encoder
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- ASS and SSA demuxer and muxer
205
- liba52 wrapper removed
Ben Littler's avatar
Ben Littler committed
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- SVQ3 watermark decoding support
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- Speex decoding via libspeex
Peter Ross's avatar
Peter Ross committed
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- Electronic Arts TGQ decoder
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- RV40 decoder
210
- QCELP / PureVoice decoder
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- RV30 decoder
Ben Littler's avatar
Ben Littler committed
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- hybrid WavPack support
Baptiste Coudurier's avatar
Baptiste Coudurier committed
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- R3D REDCODE demuxer
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- ALSA support for playback and record
Peter Ross's avatar
Peter Ross committed
215
- Electronic Arts TQI decoder
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- OpenJPEG based JPEG 2000 decoder
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- NC (NC4600) camera file demuxer
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- Gopher client support
Baptiste Coudurier's avatar
Baptiste Coudurier committed
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- MXF D-10 muxer
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- generic metadata API

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Michael Niedermayer's avatar
update  
Michael Niedermayer committed
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version 0.4.9-pre1:

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- DV encoder, DV muxer
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- Microsoft RLE video decoder
- Microsoft Video-1 decoder
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- Apple Animation (RLE) decoder
Mike Melanson's avatar
Mike Melanson committed
230
- Apple Graphics (SMC) decoder
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- Apple Video (RPZA) decoder
- Cinepak decoder
- Sega FILM (CPK) file demuxer
Mike Melanson's avatar
Mike Melanson committed
234
- Westwood multimedia support (VQA & AUD files)
235
- Id Quake II CIN playback support
Mike Melanson's avatar
Mike Melanson committed
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- 8BPS video decoder
- FLIC playback support
238 239
- RealVideo 2.0 (RV20) decoder
- Duck TrueMotion v1 (DUCK) video decoder
Mike Melanson's avatar
Mike Melanson committed
240
- Sierra VMD demuxer and video decoder
Michael Niedermayer's avatar
update  
Michael Niedermayer committed
241
- MSZH and ZLIB decoder support
242
- SVQ1 video encoder
Michael Niedermayer's avatar
update  
Michael Niedermayer committed
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- AMR-WB support
Diego Biurrun's avatar
Diego Biurrun committed
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- PPC optimizations
Michael Niedermayer's avatar
update  
Michael Niedermayer committed
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- rate distortion optimal cbp support
Diego Biurrun's avatar
Diego Biurrun committed
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- rate distorted optimal ac prediction for MPEG-4
Michael Niedermayer's avatar
update  
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- rate distorted optimal lambda->qp support
- AAC encoding with libfaac
- Sunplus JPEG codec (SP5X) support
Diego Biurrun's avatar
Diego Biurrun committed
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- use Lagrange multipler instead of QP for ratecontrol
- Theora/VP3 decoding support
Michael Niedermayer's avatar
update  
Michael Niedermayer committed
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- XA and ADX ADPCM codecs
Diego Biurrun's avatar
Diego Biurrun committed
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- export MPEG-2 active display area / pan scan
Michael Niedermayer's avatar
update  
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- Add support for configuring with IBM XLC
- floating point AAN DCT
Diego Biurrun's avatar
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- initial support for zygo video (not complete)
- RGB ffv1 support
Michael Niedermayer's avatar
update  
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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
Diego Biurrun's avatar
Diego Biurrun committed
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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
Michael Niedermayer's avatar
update  
Michael Niedermayer committed
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- stuffing to stay above min_bitrate
Diego Biurrun's avatar
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- MB type & QP visualization
Michael Niedermayer's avatar
update  
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- frame stepping for ffplay
- interlaced motion estimation
- alternate scantable support
- SVCD scan offset support
Diego Biurrun's avatar
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- closed GOP support
- SSE2 FDCT
Michael Niedermayer's avatar
update  
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- quantizer noise shaping
- G.726 ADPCM audio codec
- MS ADPCM encoding
- multithreaded/SMP motion estimation
Diego Biurrun's avatar
Diego Biurrun committed
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- multithreaded/SMP encoding for MPEG-1/MPEG-2/MPEG-4/H.263
- multithreaded/SMP decoding for MPEG-2
Michael Niedermayer's avatar
update  
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- FLAC decoder
- Metrowerks CodeWarrior suppport
Diego Biurrun's avatar
Diego Biurrun committed
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- H.263+ custom pcf support
Michael Niedermayer's avatar
update  
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- nicer output for 'ffmpeg -formats'
Diego Biurrun's avatar
Diego Biurrun committed
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- Matroska demuxer
Michael Niedermayer's avatar
update  
Michael Niedermayer committed
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- SGI image format, encoding and decoding
Diego Biurrun's avatar
Diego Biurrun committed
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- H.264 loop filter support
- H.264 CABAC support
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- nicer looking arrows for the motion vector visualization
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update  
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- improved VCD support
- audio timestamp drift compensation
Diego Biurrun's avatar
Diego Biurrun committed
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- MPEG-2 YUV 422/444 support
Michael Niedermayer's avatar
update  
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- polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
- better image scaling
Diego Biurrun's avatar
Diego Biurrun committed
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- H.261 support
Michael Niedermayer's avatar
update  
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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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update  
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- more accurate deblock filter
- padding support
- many optimizations and bugfixes
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- FunCom ISS audio file demuxer and according ADPCM decoding
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update  
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version 0.4.8:

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

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Mike Melanson's avatar
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version 0.4.7:
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Diego Biurrun's avatar
Diego Biurrun committed
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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
Diego Biurrun's avatar
Diego Biurrun committed
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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
Hetz Ben Hamo's avatar
Hetz Ben Hamo committed
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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)
Hetz Ben Hamo's avatar
Hetz Ben Hamo committed
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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)
Diego Biurrun's avatar
Diego Biurrun committed
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- 3GP support has been added (Johannes Carlsson)
Hetz Ben Hamo's avatar
Hetz Ben Hamo committed
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- VP3 codec has been added (Mike Melanson)
- more MPEG-1/2 fixes
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Diego Biurrun committed
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- better multiplatform support, MS Visual Studio fixes (various)
- AltiVec optimizations (Magnus Damn and others)
Hetz Ben Hamo's avatar
Hetz Ben Hamo committed
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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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update  
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- qpel encoding (Michael)
- 4mv+b frames encoding finally fixed (Michael)
- chroma ME (Michael)
Diego Biurrun's avatar
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- 5 comparison functions for ME (Michael)
- B-frame encoding speedup (Michael)
- WMV2 codec (unfinished - Michael)
Fabrice Bellard's avatar
update  
Fabrice Bellard committed
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- user specified diamond size for EPZS (Michael)
Mike Melanson's avatar
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- Playstation STR playback subsystem, still experimental (Mike and Michael)
- ASV2 codec (Michael)
- CLJR decoder (Alex)
Fabrice Bellard's avatar
update  
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Diego Biurrun's avatar
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.. And lots more new enhancements and fixes.
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Fabrice Bellard's avatar
update  
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version 0.4.6:
Fabrice Bellard's avatar
updated  
Fabrice Bellard committed
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Diego Biurrun's avatar
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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)
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- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
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- added GOB header for H.263/H.263+ coding on RTP mode (Juanjo)
- now H.263 picture size is returned on the first decoded frame (Juanjo)
Fabrice Bellard's avatar
update  
Fabrice Bellard committed
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- added first regression tests
Diego Biurrun's avatar
Diego Biurrun committed
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- added MPEG-2 TS demuxer
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updated  
Fabrice Bellard committed
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- new demux API for libav
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- more accurate and faster IDCT (Michael)
Diego Biurrun's avatar
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- faster and entropy-controlled motion search (Michael)
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- two pass video encoding (Michael)
- new video rate control (Michael)
- added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
- great performance improvement of video encoders and decoders (Michael)
- new and faster bit readers and vlc parsers (Michael)
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- high quality encoding mode: tries all macroblock/VLC types (Michael)
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- added DV video decoder
- preliminary RTP/RTSP support in ffserver and libavformat
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- H.263+ AIC decoding/encoding support (Juanjo)
- VCD MPEG-PS mode (Juanjo)
- PSNR stuff (Juanjo)
- simple stats output (Juanjo)
- 16-bit and 15-bit RGB/BGR/GBR support (Bisqwit)
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updated  
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Fabrice Bellard's avatar
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version 0.4.5:

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- some header fixes (Zdenek Kabelac <kabi at informatics.muni.cz>)
- many MMX optimizations (Nick Kurshev <nickols_k at mail.ru>)
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- added configure system (actually a small shell script)
- added MPEG audio layer 1/2/3 decoding using LGPL'ed mpglib by
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  Michael Hipp (temporary solution - waiting for integer only
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  decoder)
- fixed VIDIOCSYNC interrupt
- added Intel H.263 decoding support ('I263' AVI fourCC)
- added Real Video 1.0 decoding (needs further testing)
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- simplified image formats again. Added PGM format (=grey
  pgm). Renamed old PGM to PGMYUV.
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- fixed msmpeg4 slice issues (tell me if you still find problems)
- fixed OpenDivX bugs with newer versions (added VOL header decoding)
- added support for MPlayer interface
- added macroblock skip optimization
- added MJPEG decoder
- added mmx/mmxext IDCT from libmpeg2
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- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
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  <celer at shell.scrypt.net>)
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- added pixel format conversion layer (e.g. for MJPEG or PPM)
- added deinterlacing option
- MPEG-1/2 fixes
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- MPEG-4 vol header fixes (Jonathan Marsden <snmjbm at pacbell.net>)
- ARM optimizations (Lionel Ulmer <lionel.ulmer at free.fr>).
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- Windows porting of file converter
- added MJPEG raw format (input/ouput)
- added JPEG image format support (input/output)
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version 0.4.4:

- fixed some std header definitions (Bjorn Lindgren
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  <bjorn.e.lindgren at telia.com>).
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- added MPEG demuxer (MPEG-1 and 2 compatible).
- added ASF demuxer
- added prototype RM demuxer
- added AC3 decoding (done with libac3 by Aaron Holtzman)
- added decoding codec parameter guessing (.e.g. for MPEG, because the
  header does not include them)
- fixed header generation in MPEG-1, AVI and ASF muxer: wmplayer can now
  play them (only tested video)
- fixed H.263 white bug
- fixed phase rounding in img resample filter
- add MMX code for polyphase img resample filter
- added CPU autodetection
- added generic title/author/copyright/comment string handling (ASF and RM
  use them)
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- added SWF demux to extract MP3 track (not usable yet because no MP3
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  decoder)
- added fractional frame rate support
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- codecs are no longer searched by read_header() (should fix ffserver
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  segfault)
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version 0.4.3:

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- BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq at amsat.org>)
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- fixed raw yuv output
- added motion rounding support in MPEG-4
- fixed motion bug rounding in MSMPEG4
- added B-frame handling in video core
- added full MPEG-1 decoding support
- added partial (frame only) MPEG-2 support
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- changed the FOURCC code for H.263 to "U263" to be able to see the
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  +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
  this +codec ;) (JuanJo).
- Halfpel motion estimation after MB type selection (JuanJo)
- added pgm and .Y.U.V output format
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- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
  output.
- added pgmpipe I/O format (original patch from Martin Aumueller
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  <lists at reserv.at>, but changed completely since we use a format
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  instead of a protocol)
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version 0.4.2:

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- added H.263/MPEG-4/MSMPEG4 decoding support. MPEG-4 decoding support
  (for OpenDivX) is almost complete: 8x8 MVs and rounding are
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  missing. MSMPEG4 support is complete.
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- added prototype MPEG-1 decoder. Only I- and P-frames handled yet (it
  can decode ffmpeg MPEGs :-)).
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- added libavcodec API documentation (see apiexample.c).
- fixed image polyphase bug (the bottom of some images could be
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  greenish)
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- added support for non clipped motion vectors (decoding only)
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  and image sizes non-multiple of 16
- added support for AC prediction (decoding only)
- added file overwrite confirmation (can be disabled with -y)
- added custom size picture to H.263 using H.263+ (Juanjo)
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version 0.4.1:

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- added MSMPEG4 (aka DivX) compatible encoder. Changed default codec
  of AVI and ASF to DIV3.
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- added -me option to set motion estimation method
  (default=log). suppressed redundant -hq option.
- added options -acodec and -vcodec to force a given codec (useful for
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  AVI for example)
- fixed -an option
- improved dct_quantize speed
- factorized some motion estimation code
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version 0.4.0:

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- removing grab code from ffserver and moved it to ffmpeg. Added
  multistream support to ffmpeg.
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- added timeshifting support for live feeds (option ?date=xxx in the
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  URL)
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- added high quality image resize code with polyphase filter (need
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  mmx/see optimization). Enable multiple image size support in ffserver.
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- added multi live feed support in ffserver
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- suppressed master feature from ffserver (it should be done with an
  external program which opens the .ffm url and writes it to another
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  ffserver)
- added preliminary support for video stream parsing (WAV and AVI half
  done). Added proper support for audio/video file conversion in
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  ffmpeg.
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- added preliminary support for video file sending from ffserver
- redesigning I/O subsystem: now using URL based input and output
  (see avio.h)
- added WAV format support
- added "tty user interface" to ffmpeg to stop grabbing gracefully
- added MMX/SSE optimizations to SAD (Sums of Absolutes Differences)
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  (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo at atmlab.utfsm.cl>)
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- added MMX DCT from mpeg2_movie 1.5 (Juanjo)
- added new motion estimation algorithms, log and phods (Juanjo)
- changed directories: libav for format handling, libavcodec for
  codecs
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version 0.3.4:

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- added stereo in MPEG audio encoder
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version 0.3.3:

- added 'high quality' mode which use motion vectors. It can be used in
  real time at low resolution.
- fixed rounding problems which caused quality problems at high
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  bitrates and large GOP size
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version 0.3.2: small fixes

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- ASF fixes
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- put_seek bug fix

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version 0.3.1: added avi/divx support

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- added AVI support
- added MPEG-4 codec compatible with OpenDivX. It is based on the H.263 codec
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- added sound for flash format (not tested)

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version 0.3: initial public release