RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

movenc: Use first H264/HEVC frame as extradata, if it is missing 

Sticking a full frame in the extradata works, as the code for writing
the avcC/hvcC extracts the relevant parameter set NAL units - provided
that they actually exist in the frame.

Some encoders don't provide split out extradata directly on init (or
at all). In particular, the MediaFoundation encoder wrapper doesn't
always (depending on the actual encoder device) - this is the case for
Qualcomm's HEVC encoder on SD835, and also on some QSV H264 encoders).

This only works for cases where the moov hasn't already been written
(e.g. when not writing fragmented mp4 with empty_moov, unless using
the delay_moov option).

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2020-05-08 14:21:32 +03:00
parent cd0771c38c
commit 9f891d0b4b
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavformat/movenc.c
View File

@ -5583,6 +5583,8 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
}
if ((par->codec_id == AV_CODEC_ID_DNXHD ||
par->codec_id == AV_CODEC_ID_H264 ||
par->codec_id == AV_CODEC_ID_HEVC ||
par->codec_id == AV_CODEC_ID_TRUEHD ||
par->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
/* copy frame to create needed atoms */