New submission from Alexander Strange <[email protected]>:

http://astrange.ithinksw.net/ffmpeg/hrpreviews5mb.mkv

First two packets in ffprobe:

[PACKET]
codec_type=video
stream_index=0
pts=-33
pts_time=-0.033000 
dts=-33
dts_time=-0.033000 
duration=33
duration_time=0.033000 
size=127636.000000 
pos=5426
flags=K
[/PACKET]
[PACKET]
codec_type=video
stream_index=0
pts=67
pts_time=0.067000 
dts=0
dts_time=0.000000 
duration=33
duration_time=0.033000 
size=89256.000000 
pos=133070
flags=_
[/PACKET]

First two packets in mkvinfo:

I frame, track 1, timecode 0 (00:00:00.000), size 127636, adler 0xdf011548
P frame, track 1, timecode 67 (00:00:00.067), size 89256, adler 0x0e62997e

I don't see where the pts=-33 came from on the first packet.

----------
messages: 12063
priority: normal
status: new
substatus: new
title: Odd initial timestamps in mkv
type: bug

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FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/issue2251>
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