diff options
| author | James Cowgill <jcowgill@debian.org> | 2019-11-01 08:51:07 +0000 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2019-11-01 13:38:36 +0100 |
| commit | bb718d11ed992f4d12ad683e310b53bf1c519322 (patch) | |
| tree | 797f3d4a720c8bc0d274f22de3c09ab287f27345 /libavcodec/libtwolame.c | |
| parent | 2dd71bf95e369b6c03fd6f5c66ff1d143e752192 (diff) | |
| download | ffmpeg-bb718d11ed992f4d12ad683e310b53bf1c519322.tar.gz | |
avcodec/libtwolame: fix mono default bitrate
As of libtwolame 0.4.0, 384 kbps is not accepted as a valid bitrate
for encoding mono audio and the maximum bitrate is now halved to 192
kbps to comply with the MP2 standard. Example error:
twolame_init_params(): 384kbps is an invalid bitrate for mono encoding.
Adjust the default bitrate calculation to take this into account.
Signed-off-by: James Cowgill <jcowgill@debian.org>
Diffstat (limited to 'libavcodec/libtwolame.c')
| -rw-r--r-- | libavcodec/libtwolame.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libavcodec/libtwolame.c b/libavcodec/libtwolame.c index 030f88868f..5ceb3d9f3f 100644 --- a/libavcodec/libtwolame.c +++ b/libavcodec/libtwolame.c @@ -78,8 +78,12 @@ static av_cold int twolame_encode_init(AVCodecContext *avctx) twolame_set_in_samplerate(s->glopts, avctx->sample_rate); twolame_set_out_samplerate(s->glopts, avctx->sample_rate); - if (!avctx->bit_rate) - avctx->bit_rate = avctx->sample_rate < 28000 ? 160000 : 384000; + if (!avctx->bit_rate) { + if ((s->mode == TWOLAME_AUTO_MODE && avctx->channels == 1) || s->mode == TWOLAME_MONO) + avctx->bit_rate = avctx->sample_rate < 28000 ? 80000 : 192000; + else + avctx->bit_rate = avctx->sample_rate < 28000 ? 160000 : 384000; + } if (avctx->flags & AV_CODEC_FLAG_QSCALE || !avctx->bit_rate) { twolame_set_VBR(s->glopts, TRUE); |