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avformat/flvenc: prevent writing legacy codecs into extended video tracks

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This commit is contained in:
Timo Rothenpieler 2024-12-20 01:26:03 +01:00
parent 64043d7b18
commit 741e49c56f
1 changed files with 14 additions and 1 deletions
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15
libavformat/flvenc.c
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@ -970,6 +970,15 @@ static int flv_init(struct AVFormatContext *s)
switch (par->codec_type) {
case AVMEDIA_TYPE_VIDEO:
if (video_ctr &&
par->codec_id != AV_CODEC_ID_VP8 &&
par->codec_id != AV_CODEC_ID_VP9 &&
par->codec_id != AV_CODEC_ID_AV1 &&
par->codec_id != AV_CODEC_ID_H264 &&
par->codec_id != AV_CODEC_ID_HEVC) {
av_log(s, AV_LOG_ERROR, "Unsupported multi-track video codec.\n");
return AVERROR(EINVAL);
}
if (s->streams[i]->avg_frame_rate.den &&
s->streams[i]->avg_frame_rate.num) {
flv->framerate = av_q2d(s->streams[i]->avg_frame_rate);
@ -1012,7 +1021,7 @@ static int flv_init(struct AVFormatContext *s)
par->codec_id != AV_CODEC_ID_FLAC &&
par->codec_id != AV_CODEC_ID_AC3 &&
par->codec_id != AV_CODEC_ID_EAC3) {
av_log(s, AV_LOG_ERROR, "Unsupported multi-track codec.\n");
av_log(s, AV_LOG_ERROR, "Unsupported multi-track audio codec.\n");
return AVERROR(EINVAL);
}
flv->track_idx_map[i] = audio_ctr++;
@ -1390,6 +1399,10 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
write_codec_fourcc(pb, par->codec_id);
if (track_idx)
avio_w8(pb, track_idx);
} else if (track_idx) {
av_log(s, AV_LOG_ERROR, "Attempted to write legacy codec into extended flv track.\n");
ret = AVERROR(EINVAL);
goto fail;
} else {
av_assert1(flags >= 0);
avio_w8(pb, flags);