[mythtv-users] MythArchive/dvdauthor fails; Cannot Find Chapter 2 (Result: 1)

[Paul Harrison]

Mark Prinz wrote:
> Paul,
>
> Thanks for the assistance.
>
> The audio file you referenced was available prior to making the 'Use
> FIFO' change; it sounded fine.
>
> However, I unchecked 'Use FIFO' ran again, and it failed at mplex...no
> 'stream0.ac3' was ever created.
>
> The source is just one of my recordings; I have it set to, ' MPEG-2
> Hardware Encoder' in Recording Profiles (I have a PVR-250).
>
> Also, here is part of the mythlog...any suggestions?
>
> Input #0, mpeg, from '/video/recordings/1054_20060526233000.mpg':
>   Duration: 00:29:50.6, start: 0.333811, bitrate: 5096 kb/s
>   Stream #0.0[0x1e0], 29.97 fps(r): Video: mpeg2video, yuv420p,
> 480x480, 6000 kb/s
>   Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 384 kb/s
>
> Here is the latter part of mythburn.log after unselecting 'Use FIFO':
>
> DVDAuthor::spumux, version 0.6.11.
> Build options: gnugetopt iconv freetype
> Send bugs to <dvdauthor-users at lists.sourceforge.net>
>
> INFO: Locale=en_US.UTF-8
> INFO: Converting filenames to UTF-8
> INFO: PNG had 2 colors
> INFO: PNG had 2 colors
> INFO: Constructing blank img
> INFO: Pickbuttongroups, success with 1 groups, useimg=1
> WARN:  Read 0, expected 4
> INFO: Found EOF in .sub file.
> INFO: Max_sub_size=2944
> INFO: 1 subtitles added, 0 subtitles skipped, stream: 32, offset: 0.13
>
> Statistics:
> - Processed 0 subtitles.
> - The longest display line had -1 characters.
> - The maximum number of displayed lines was 0.
> - The normal display height of the font arial.ttf was 0.
> - The bottom display height of the font arial.ttf was 0.
> - The biggest subtitle box had 2944 bytes.
> Menu items per page 3
> Chapters per recording 8
> Creating DVD XML file for dvd author
> Menu page 1
> Video length is 1791 seconds. Each chapter will be 223 seconds
> Total size of video files, before multiplexing, is 640 Mbytes, audio
> is 40 MBytes, menus are 4 MBytes.
> Video will fit onto DVD. 3773.0 MBytes of space remaining on recordable DVD.
> Multiplexing MPEG stream to /video/archive/work/1/final.mpg
> Available streams - video and one audio stream
> **ERROR: [mplex] Can't find next AC3 frame: @ 973056 we have 27ee -
> broken bit-stream?
> ************************************************************
> ERROR: mplex failed with result 1
> ************************************************************
>
> Terminated
>   
It's definitely mplex that is falling over because the ac3 audio stream 
is corrupted. There's  a couple of other thing you could try. On the 
settings page set the "always run mythtranscode" option. That option 
will always run mythtranscode --mpeg to try to clean up the time codes 
and stuff in the file. If you have a cut list for the file and you set 
mytharchive to use it then mythtranscode will already have been run on 
the file so this option wont help in that case.

The other option is change the  "Always Encode to AC3" option so it is 
not selected. The script will then use the original mp2 audio track in 
that case. The only problem with changing that option is some standalone 
DVD players may have problems playing it. Most, probably all, software 
players like xine wont have any problem playing it.

Is this just one file that is giving you problems or all your 
recordings? It could just be that this file is slightly corrupted and 
the tools we are using aren't smart enough to spot this and carry on 
regardless.

Paul H.