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ismindex: Calculate the pts duration of trun atoms, not the dts duration 

Since the duration is compared to the tfra durations/intervals which
are expressed in pts, calculate that here as well.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2015-03-16 00:18:37 +02:00
parent 67a2912307
commit 30a041887f
1 changed files with 10 additions and 4 deletions
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14
tools/ismindex.c
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@ -228,10 +228,12 @@ fail:
static int64_t read_trun_duration(AVIOContext *in, int default_duration,
int64_t end)
{
int64_t ret = 0;
int64_t dts = 0;
int64_t pos;
int flags, i;
int entries;
int64_t first_pts = 0;
int64_t max_pts = 0;
avio_r8(in); /* version */
flags = avio_rb24(in);
if (default_duration <= 0 && !(flags & MOV_TRUN_SAMPLE_DURATION)) {
@ -246,19 +248,23 @@ static int64_t read_trun_duration(AVIOContext *in, int default_duration,
pos = avio_tell(in);
for (i = 0; i < entries && pos < end; i++) {
int sample_duration = default_duration;
int64_t pts = dts;
if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(in);
if (flags & MOV_TRUN_SAMPLE_SIZE) avio_rb32(in);
if (flags & MOV_TRUN_SAMPLE_FLAGS) avio_rb32(in);
if (flags & MOV_TRUN_SAMPLE_CTS) avio_rb32(in);
if (flags & MOV_TRUN_SAMPLE_CTS) pts += avio_rb32(in);
if (sample_duration < 0) {
fprintf(stderr, "Negative sample duration %d\n", sample_duration);
return -1;
}
ret += sample_duration;
if (i == 0)
first_pts = pts;
max_pts = FFMAX(max_pts, pts + sample_duration);
dts += sample_duration;
pos = avio_tell(in);
}
return ret;
return max_pts - first_pts;
}
static int64_t read_moof_duration(AVIOContext *in, int64_t offset)