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avformat/movenc: Write version 2 of audio atom if channels is not known 

The version 1 needs the channel count and would divide by 0
Fixes: division by 0
Fixes: fpe_movenc.c_1108_1.ogg
Fixes: fpe_movenc.c_1108_2.ogg
Fixes: fpe_movenc.c_1108_3.wav

Found-by: #CHEN HONGXU# <HCHEN017@e.ntu.edu.sg>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit fa19fbcf71)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-07-08 00:16:42 +02:00
parent 5db47b3983
commit fd53179f4a
1 changed files with 1 additions and 1 deletions
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2
libavformat/movenc.c
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@ -1018,7 +1018,7 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
uint32_t tag = track->tag;
if (track->mode == MODE_MOV) {
if (track->timescale > UINT16_MAX) {
if (track->timescale > UINT16_MAX || !track->par->channels) {
if (mov_get_lpcm_flags(track->par->codec_id))
tag = AV_RL32("lpcm");
version = 2;