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Improve time_increment_bits guessing code.

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Originally committed as revision 20785 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2009-12-09 14:05:39 +00:00
parent 52255d1746
commit e4d1d920b0
1 changed files with 5 additions and 1 deletions
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6
libavcodec/h263.c
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@ -5903,7 +5903,11 @@ static int decode_vop_header(MpegEncContext *s, GetBitContext *gb){
av_log(s->avctx, AV_LOG_ERROR, "hmm, seems the headers are not complete, trying to guess time_increment_bits\n");
for(s->time_increment_bits=1 ;s->time_increment_bits<16; s->time_increment_bits++){
if(show_bits(gb, s->time_increment_bits+1)&1) break;
if ( s->pict_type == FF_P_TYPE
|| (s->pict_type == FF_S_TYPE && s->vol_sprite_usage==GMC_SPRITE)) {
if((show_bits(gb, s->time_increment_bits+6)&0x37) == 0x30) break;
}else
if((show_bits(gb, s->time_increment_bits+5)&0x1F) == 0x18) break;
}
av_log(s->avctx, AV_LOG_ERROR, "my guess is %d bits ;)\n",s->time_increment_bits);