[mythtv-users] Mytharchive problem recording movie to DVD

[Paul Harrison]

Kent Williams wrote:
> I've just tried to create a couple of DVDs using Mytharchive. Using the
> menus and after trying three DVD players, I'm yet to find one that seems
> to work properly. I'll put the specifics in another message later when
> I've noted everything down, but for now my problem is with a movie I
> recorded from TV and am trying to archive to DVD without any menu.
>
> Before making the DVD, I went through and removed all commercials, then
> let Mythtranscode remove them using the lossless mpeg 2 feature
> (original recording was from DVB-T).
>
> I then proceeded to create a DVD with no menu and the LP re-encoding
> profile. Everything seemed to go smoothly until I tested the DVD and
> found the last 10 minutes or so to be missing, ie, the DVD players claim
> that the disc is about 10 minutes shorter than the original recording
> (with commercials removed). The last 10 minutes play fine in the Myth
> recording.
>
> Looking at the logs created by Mythburn, I see thousands of lines of:
> video PTS inconsistent:  2:17:06.940  2:17:06.940  2:17:07.180
> 2:17:06.680  diff:  0:00:00.240
> video DTS inconsistent:  2:17:06.900  2:17:06.900  2:17:07.140
> 2:17:06.640 diff:  0:00:00.240
> video PTS inconsistent:  2:17:06.980  2:17:06.980  2:17:07.220
> 2:17:06.720  diff:  0:00:00.240
> video DTS inconsistent:  2:17:06.940  2:17:06.940  2:17:07.180
> 2:17:06.680 diff:  0:00:00.240
>
> Then there is:
>
> video DTS inconsistent:  2:17:07.140  2:17:07.140  2:17:07.380
> 2:17:06.880 diff:  0:00:00.240
> video PTS inconsistent:  2:17:07.220  2:17:07.220  2:17:07.460
> 2:17:06.960  diff:  0:00:00.240
> video DTS inconsistent:  2:17:07.180  2:17:07.180  2:17:07.420
> 2:17:06.920 diff:  0:00:00.240
> Wrong audio frame size: 1057
> audio PTS inconsistent:  2:17:06.080  2:17:06.016 diff:  0:00:00.064
> video PTS inconsistent:  2:17:07.260  2:17:07.260  2:17:07.500
> 2:17:07.000  diff:  0:00:00.240
> video DTS inconsistent:  2:17:07.220  2:17:07.220  2:17:07.460
> 2:17:06.960 diff:  0:00:00.240
> audio PTS inconsistent:  2:17:06.176  2:17:06.080 diff:  0:00:00.096
> video PTS inconsistent:  2:17:07.300  2:17:07.300  2:17:07.540
> 2:17:07.040  diff:  0:00:00.240
> video DTS inconsistent:  2:17:07.260  2:17:07.260  2:17:07.500
> 2:17:07.000 diff:  0:00:00.240
>
> and the log continues until the end of the recording, but now (like
> above), every couple of lines there are two columns of time rather than
> the 4 that always existed before the error. The interesting thing is
> that the DVD player claims that the length of the movie is 2:17:06,
> which is suspiciously close to the "Wrong audio frame size: 1057" error.
>
> Later on in the next step I see:
> at 2556MB, 1 PGCS^MSTAT: VOBU 17328 at 2558MB, 1 PGCS^MSTAT: VOBU 17344
> at 2560MB, 1 PGCS^MSTAT: VOBU 17360 at 2563MB, 1 PGCS
> STAT: VOBU 17376 at 2566MB, 1 PGCS^M**ERROR: [mplex] Can't find next AC3
> frame: @ 197424384 we have 4d1c - broken bit-stream?
>
> It then goes on to write the DVD without any trouble.
>
> Now from reading the logs, I presume that there was some corruption in
> the audio stream resulting the recording being cut short. Is there any
> way around this? I thought that the mpeg2 transcode would have fixed
> this up?
>
> I'm using SVN rev 11460.
>
> Cheers,
> -Kent
>
>   
Unfortunately many of the tools used by MythArchive don't like corrupt 
files. To be honest mythtranscode and mythreplex seem to cause more 
problems than they fix :-( I'm going to add support for using projectX 
as an option to replace them. I've heard that projectX seems to handle 
corrupt streams better and does a better job at keeping everything in sync.

Paul