diff options
Diffstat (limited to 'libavformat/utils.c')
| -rw-r--r-- | libavformat/utils.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c index e82324f323..c124507446 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -2444,6 +2444,9 @@ int av_write_header(AVFormatContext *s) av_log(s, AV_LOG_ERROR, "sample rate not set\n"); return -1; } + if(!st->codec->block_align) + st->codec->block_align = st->codec->channels * + av_get_bits_per_sample(st->codec->codec_id) >> 3; break; case CODEC_TYPE_VIDEO: if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too? |