Commit 8b524ab0 authored by Martin Storsjö's avatar Martin Storsjö
Browse files

movenc: Add a warning message if conflicting options have been specified

Signed-off-by: default avatarMartin Storsjö <>
parent a6a4596e
......@@ -3141,8 +3141,11 @@ static int mov_write_header(AVFormatContext *s)
/* faststart: moov at the beginning of the file, if supported */
if (mov->flags & FF_MOV_FLAG_FASTSTART) {
if ((mov->flags & FF_MOV_FLAG_FRAGMENT) ||
(s->flags & AVFMT_FLAG_CUSTOM_IO))
(s->flags & AVFMT_FLAG_CUSTOM_IO)) {
av_log(s, AV_LOG_WARNING, "The faststart flag is incompatible "
"with fragmentation and custom IO, disabling faststart\n");
mov->flags &= ~FF_MOV_FLAG_FASTSTART;
/* Non-seekable output is ok if using fragmentation. If ism_lookahead
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