Recently I have been playing a lot of MPEG-TS videos on MPlayer. The sources of the videos are unclear to me, so I have no idea of with which software these TS videos were created.
The problem is that MPlayer's OSD often reports the wrong timestamp and duration; this seems to be MPEG-TS specific since I have never encountered (or at least I cannot recall encountering) such problems with MPEG-4 or H.264.
For instance, I have cut (with FFmpeg) the following sample from one of my TS videos: sample.ts hosted on Google Drive (no copyright infridgement intended). ffprobe sample.ts
prints
Input #0, mpegts, from 'sample.ts':
Duration: 00:00:09.99, start: 1.423344, bitrate: 2827 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], max. 104857 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0:1[0x101]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 123 kb/s
When I play this video with MPlayer (no options passed), the osd timestamp begins at around 00:00:01
, while the duration reported is 00:03:40
(note that this video is only 10 seconds long!).
I have also tested this on ffplay
(with -vf showinfo
), and the timestamp issue is consistent with MPlayer: the info shown for the first frame is
[Parsed_showinfo_0 @ 0x7fbd5242c620] n:0 pts:129003 pts_time:1.43337 pos:564 fmt:yuv420p sar:1/1 s:1920x1080 i:P iskey:1 type:I checksum:405DDE4C plane_checksum:[58C83B11 F8FAD95C B874C9D0]
Note that the pts_time
is 1.43337
instead of the expected 0
. So I guess the problem is related to libav*. Anyway, at least ffplay
reports the correct duration, while MPlayer gets it wrong, which makes the scene more puzzling for me.
So my questions are
Is this a known issue/bug?
Is there any option to fix this?
This is really annoying for me since I need to extract frame timestamps for FFmpeg seeking from time to time. Any help is greatly appreciated.
For your reference, my MPlayer is MPlayer UNKNOWN-4.2.1
installed on OS X 10.9.3 from the mplayer-devel @36449_4+osd
port of MacPorts.