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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-10-24 00:38:56 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-10-24 00:40:18 +0200 |
| commit | 3556e7ce737edade8c5e628a19e2b5da0809928d (patch) | |
| tree | 8ff22f0f9302dc52720b20327269d1d871f2c679 /libavcodec/mpegvideo_enc.c | |
| parent | 1856162caa912a4a845b7caff51c9e2dff3d39d9 (diff) | |
mpegvideo enc: choose VBV buffer size for mpeg4 when none is specified instead of failing
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/mpegvideo_enc.c')
| -rw-r--r-- | libavcodec/mpegvideo_enc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c index 00b0d03e5f..256b8d4e4d 100644 --- a/libavcodec/mpegvideo_enc.c +++ b/libavcodec/mpegvideo_enc.c @@ -409,6 +409,20 @@ av_cold int ff_MPV_encode_init(AVCodecContext *avctx) case AV_CODEC_ID_MPEG2VIDEO: avctx->rc_buffer_size = FFMAX(avctx->rc_max_rate, 15000000) * 112L / 15000000 * 16384; break; + case AV_CODEC_ID_MPEG4: + case AV_CODEC_ID_MSMPEG4V1: + case AV_CODEC_ID_MSMPEG4V2: + case AV_CODEC_ID_MSMPEG4V3: + if (avctx->rc_max_rate >= 15000000) { + avctx->rc_buffer_size = 320 + (avctx->rc_max_rate - 15000000L) * (760-320) / (38400000 - 15000000); + } else if(avctx->rc_max_rate >= 2000000) { + avctx->rc_buffer_size = 80 + (avctx->rc_max_rate - 2000000L) * (320- 80) / (15000000 - 2000000); + } else if(avctx->rc_max_rate >= 384000) { + avctx->rc_buffer_size = 40 + (avctx->rc_max_rate - 384000L) * ( 80- 40) / ( 2000000 - 384000); + } else + avctx->rc_buffer_size = 40; + avctx->rc_buffer_size *= 16384; + break; } if (avctx->rc_buffer_size) { av_log(avctx, AV_LOG_INFO, "Automatically choosing VBV buffer size of %d kbyte\n", avctx->rc_buffer_size/8192); |