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lavc: make avcodec_open2() fail when the timebase is not set for encoding 

Many encoders use it. There is also a divide by the timebase lower in
this function, which would crash when it is not set.
This commit is contained in:
Anton Khirnov 2016-05-02 18:38:41 +02:00
parent 11de006bab
commit e62ff72fc1
1 changed files with 7 additions and 0 deletions
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7
libavcodec/utils.c
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@ -994,6 +994,13 @@ FF_DISABLE_DEPRECATION_WARNINGS
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->sample_fmts) {
for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
if (avctx->sample_fmt == avctx->codec->sample_fmts[i])