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mpegvideo enc: choose VBV buffer size for mpeg1/2 when none is specified instead of failing

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-24 00:03:06 +02:00
parent 33c4535db7
commit 1856162caa
1 changed files with 12 additions and 0 deletions
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12
libavcodec/mpegvideo_enc.c
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@ -403,6 +403,18 @@ av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
s->loop_filter = !!(s->flags & CODEC_FLAG_LOOP_FILTER);
if (avctx->rc_max_rate && !avctx->rc_buffer_size) {
switch(avctx->codec_id) {
case AV_CODEC_ID_MPEG1VIDEO:
case AV_CODEC_ID_MPEG2VIDEO:
avctx->rc_buffer_size = FFMAX(avctx->rc_max_rate, 15000000) * 112L / 15000000 * 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);
}
}
if ((!avctx->rc_max_rate) != (!avctx->rc_buffer_size)) {
av_log(avctx, AV_LOG_ERROR, "Either both buffer size and max rate or neither must be specified\n");
if (avctx->rc_max_rate && !avctx->rc_buffer_size)