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rate limit tips and checks

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Originally committed as revision 2643 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-01-01 15:13:44 +00:00
parent 55bbad6f14
commit 273977d814
1 changed files with 10 additions and 1 deletions
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11
libavcodec/mpegvideo.c
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@ -731,12 +731,21 @@ int MPV_encode_init(AVCodecContext *avctx)
s->loop_filter= !!(s->flags & CODEC_FLAG_LOOP_FILTER);
s->alternate_scan= !!(s->flags & CODEC_FLAG_ALT_SCAN);
if(avctx->rc_max_rate && !avctx->rc_buffer_size){
av_log(avctx, AV_LOG_ERROR, "a vbv buffer size is needed, for encoding with a maximum bitrate\n");
return -1;
}
if(avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate){
av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isnt recommanded!\n");
}
if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4
&& s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){
av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
return -1;
}
if(s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE){
av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decission\n");
return -1;