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try to check for nonsense time_base instead of setting fake one

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Originally committed as revision 4485 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2005-07-31 10:00:25 +00:00
parent 463c5a26bd
commit e53222d19b
1 changed files with 4 additions and 6 deletions
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10
libavcodec/h263.c
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@ -5156,7 +5156,6 @@ int h263_decode_picture_header(MpegEncContext *s)
s->avctx->time_base.num*= get_bits(&s->gb, 7);
if(s->avctx->time_base.num == 0){
av_log(s, AV_LOG_ERROR, "zero framerate\n");
s->avctx->time_base= (AVRational){1001, 30000}; //prevent crash
return -1;
}
gcd= ff_gcd(s->avctx->time_base.den, s->avctx->time_base.num);
@ -5801,10 +5800,6 @@ static int decode_vop_header(MpegEncContext *s, GetBitContext *gb){
else
s->decode_mb= ff_mpeg4_decode_mb;
if(s->avctx->time_base.den==0){
s->avctx->time_base.den=1;
// fprintf(stderr, "time_increment_resolution is illegal\n");
}
time_incr=0;
while (get_bits1(gb) != 0)
time_incr++;
@ -5856,7 +5851,10 @@ static int decode_vop_header(MpegEncContext *s, GetBitContext *gb){
}
//av_log(s->avctx, AV_LOG_DEBUG, "last nonb %Ld last_base %d time %Ld pp %d pb %d t %d ppf %d pbf %d\n", s->last_non_b_time, s->last_time_base, s->time, s->pp_time, s->pb_time, s->t_frame, s->pp_field_time, s->pb_field_time);
s->current_picture_ptr->pts= (s->time + s->avctx->time_base.num/2) / s->avctx->time_base.num;
if(s->avctx->time_base.num)
s->current_picture_ptr->pts= (s->time + s->avctx->time_base.num/2) / s->avctx->time_base.num;
else
s->current_picture_ptr->pts= AV_NOPTS_VALUE;
if(s->avctx->debug&FF_DEBUG_PTS)
av_log(s->avctx, AV_LOG_DEBUG, "MPEG4 PTS: %Ld\n", s->current_picture_ptr->pts);