[mythtv-users] MP4/H264 file and problems with 10-second rewind
Joey Morris
rjmorris at nc.rr.com
Fri Dec 23 23:02:52 UTC 2011
I bought the Louis CK standup special that he's selling from his
website and dropped it into MythVideo (0.24.1+fixes). It mostly plays
fine. However, the elapsed time counter moves at about half of real
time. For example, if I start the video and let it play for 10
minutes, the elapsed time shows just 5 minutes. Also, if I use the
left arrow key to skip back 10 seconds, it actually skips back several
minutes.
I'm not sure how to debug this, but I did inspect the file with
ffmpeg -i. Here is the output:
Seems stream 0 codec frame rate differs from container frame rate:
47952.00 (47952/1) -> 23.98 (2997/125)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'Louis CK Live at the Beacon Theater 2011.mp4':
Metadata:
major_brand : mp42
minor_version : 1
compatible_brands: mp42mp41
creation_time : 2011-12-09 16:04:07
Duration: 01:02:43.17, start: 0.000000, bitrate: 2550 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661),
yuv420p, 1280x720, 2354 kb/s, 23.98 fps, 23.98 tbr, 23976 tbn,
47952 tbc
Metadata:
creation_time : 2011-12-09 16:04:07
handler_name : Apple Video Media Handler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16,
191 kb/s
Metadata:
creation_time : 2011-12-09 16:04:07
handler_name : Apple Sound Media Handler
I suspect this is a frame rate problem similar to the one discussed
recently in http://www.gossamer-threads.com/lists/mythtv/users/497615.
A solution was found for that problem, requiring edits to the file's
metadata, but that was for an mkv.
Does anyone have advice for how I can fix the frame rate on my mp4
file? Or, do you think there might be other causes for the problem I'm
seeing?
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