[FFmpeg-trac] #7497(avformat:new): trun.version=1 negative composition time offset is mishandled causing non-monotonic packet DTS
FFmpeg
trac at avcodec.org
Wed Oct 17 01:38:19 EEST 2018
#7497: trun.version=1 negative composition time offset is mishandled causing non-
monotonic packet DTS
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Reporter: pkoshevoy | Owner:
Type: defect | Status: new
Priority: normal | Component: avformat
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Changes (by pkoshevoy):
* keywords: mov =>
Comment:
from the 14496-12 2012 spec:
{{{
8.6.1.3.2 Syntax
aligned(8) class CompositionOffsetBox
extends FullBox(‘ctts’, version = 0, 0) {
unsigned int(32) entry_count;
int i;
if (version == 0) {
for (i = 0; i < entry_count; i++) {
unsigned int(32) sample_count;
unsigned int(32) sample_offset;
}
}
else if (version == 1) {
for (i = 0; i < entry_count; i++) {
unsigned int(32) sample_count;
signed int(32) sample_offset;
}
}
}
}}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/7497#comment:2>
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