Opened 13 years ago

Closed 9 years ago

#2266 closed defect (wontfix)

mythtranscode --ostream dvd does not work correctly with 2 audio tracks

Reported by: thomas@… Owned by:
Priority: minor Milestone: unknown
Component: MythTV - Mythtranscode Version: head
Severity: medium Keywords:
Cc: Ticket locked: no

Description

"mythtranscode --ostream dvd" produces correct results, if there is only one audio track. dvdauthor can read the mpeg and produce the dvd structure.

However, if there are 2 audio tracks (mp2 and ac3) in a DVB mpeg-ts recording, the resulting file is still playable with mplayer (and audio track can be switched with "#"), but dvdauthor cannot create a valid dvd structure of it. It spits out lots of warnings in the process and the result is then corrupted. So, something is not DVD compliant.

Warnings: WARN: Audio pts for channel 0 moves backwards; please remultiplex input. WARN: Previous sector: 54.664 - 54.728 etc.

So, lots of manual stuff has to be done to work around this and get such a recording to DVD. And MythArchive? will also not work with this bug, I guess (not tested).

Demo file is available on demand.

Change History (9)

comment:1 Changed 13 years ago by Isaac Richards

Priority: majorminor
Severity: highmedium

comment:2 Changed 13 years ago by Geoffrey Hausheer

Owner: changed from Isaac Richards to Geoffrey Hausheer
Status: newassigned

The easiest solution to this would be to strip one of the audio tracks. This would be trivial, but not ideal. Would this be useful to you as a work-around until I can determine what dvdauthor expects? Either way, I'll look into what is required.

comment:3 Changed 13 years ago by thomas@…

A temporary solution is not necessary for me. I am using ProjectX + mplex as a workaround until the correct solution is available. Thanks.

comment:4 Changed 13 years ago by Geoffrey Hausheer

Could you supply me with an example input file (or at least several megs from the beginning) that works with dvdauthor? It would be very helpful to see what the container looks like. Also, the xml file you use for it if appropriate.

comment:5 Changed 13 years ago by thomas@…

http://www.boerkel.de/DualAudioTs.mpg (original recording) http://www.boerkel.de/DualAudioPs.mpg (from mplex) http://www.boerkel.de/DualAudioPs.mpg.xml

It's also important AFAIK that the default audio track from MythTV will be the first audio track in the dvd-mpeg-file, so that the DVD player uses this as default.

comment:6 Changed 12 years ago by paulh

Component: mythtvmythtranscode

comment:7 Changed 10 years ago by stuartm

Milestone: unknown
Owner: Geoffrey Hausheer deleted
Status: acceptednew

comment:8 Changed 10 years ago by stuartm

Component: mythtranscodeMythTV - Mythtranscode

comment:9 Changed 9 years ago by robertm

Resolution: wontfix
Status: newclosed

Killing an extremely dead ticket without an owner.

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