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avidec: fix duration and bitrate of truncated files 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-03-19 13:06:08 +01:00
parent 4d16ba2dd8
commit 8d0da20ca6
1 changed files with 8 additions and 2 deletions
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10
libavformat/avidec.c
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@ -62,6 +62,7 @@ typedef struct {
int64_t riff_end;
int64_t movi_end;
int64_t fsize;
int64_t io_fsize;
int64_t movi_list;
int64_t last_pkt_pos;
int index_loaded;
@ -373,7 +374,7 @@ static int avi_read_header(AVFormatContext *s)
av_log(avi, AV_LOG_DEBUG, "use odml:%d\n", avi->use_odml);
avi->fsize = avio_size(pb);
avi->io_fsize = avi->fsize = avio_size(pb);
if(avi->fsize<=0 || avi->fsize < avi->riff_end)
avi->fsize= avi->riff_end == 8 ? INT64_MAX : avi->riff_end;
@ -569,8 +570,13 @@ static int avi_read_header(AVFormatContext *s)
default:
av_log(s, AV_LOG_INFO, "unknown stream type %X\n", tag1);
}
if(ast->sample_size == 0)
if(ast->sample_size == 0) {
st->duration = st->nb_frames;
if (st->duration > 0 && avi->io_fsize > 0 && avi->riff_end > avi->io_fsize) {
av_log(s, AV_LOG_DEBUG, "File is truncated adjusting duration\n");
st->duration = av_rescale(st->duration, avi->io_fsize, avi->riff_end);
}
}
ast->frame_offset= ast->cum_len;
avio_skip(pb, size - 12 * 4);
break;