[mythtv] Mytharchive - bad subsid-track mp2 to ac3 conversion
John Pilkington
J.Pilk at tesco.net
Fri Feb 8 14:39:02 UTC 2008
I just installed the latest ATrpms build: 0.21-175_trunk_r15741.el5.i386
As suggested by the wiki I have Mytharchive converting the two native
mp2 audio channels to ac3. The subsidiary track is garbled in the dvd
image - Donald Duck effect. Same in mplayer and internal .iso player.
With the earlier 15447 build I had noticed that the two audio streams
before the remux were both the same size. I now find that the
subsidiary track is garbled on a DVD burned with that build.
I don't think I really need to do the mp2 to ac3 thing - it's just a
workaround to help players that can't handle both, and the title music
is supplied as ac3.
For the original recording as input after mythtranscode:
$ ffmpeg -i 3009_20080207205900.mpg
Input #0, mpeg, from '3009_20080207205900.mpg':
Duration: 00:58:59.3, start: 0.298589, bitrate: 3569 kb/s
Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576 [PAR 64:45
DAR 16:9], 15000 kb/s, 25.00 tb(r)
Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 256 kb/s
Stream #0.2[0x1c1]: Audio: mp2, 48000 Hz, mono, 64 kb/s
and in the working directory:
ffmpeg -i VTS_02_1.VOB
Input #0, mpeg, from 'VTS_02_1.VOB':
Duration: 00:38:45.1, start: 0.160000, bitrate: 3694 kb/s
Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576 [PAR 64:45
DAR 16:9], 15000 kb/s, 25.00 tb(r)
Stream #0.1[0x80]: Audio: liba52, 48000 Hz, stereo, 192 kb/s
Stream #0.2[0x81]: Audio: liba52, 48000 Hz, mono, 192 kb/s
Thanks to Paul H for the recent native-mode patch.
John P
More information about the mythtv-dev
mailing list