Re: bugreport (3 bugs)

Hello Jorge,

On Sun, 12 Sep 2010, Jorge Martinez Saez wrote:

> I just download your video from
> ftp://ftp.unob.cz/pub/testcases/dvdauthor/  and use ffmpeg to remux
> like this:
>
> ffmpeg -i T.mpg -target ntsc-dvd -y T1.mpg

Thanks for kicking me into the right direction. I didnt know what 
'-target' really does. It seems as a viable alternative (no A/V
resync in the result). I've used the remuxing command in the following 
form:

ffmpeg -i T.mpg -target pal-dvd -vcodec copy -acodec copy -y T1.mpg

'pal-dvd', as I'm in a 'PAL' region, '-vcodec copy' becouse otherwise
ffmpeg does (slow) true reencoding, and '-acodec copy' for the same reason
(here ffmpeg would even convert mp2 to ac3, which is undesirable, DVD spec
permits using mp2 and becouse I adhere to 'no reencoding' rule anyway).

The command above apparently seems to only fix PTS with relation to SCRs, 
which is, surprisingly, all that is needed to make dvdauthor happy.

Nonetheless, the bug still remains ('ivtv' patch that dvdauthor (current
HEAD of master branch) now incorporates, aimed to fix exactly the same 
kind of problem I seem to have - to allow use non-remuxed MPEG PS. Though 
it seems to never work, at least for every video I record, cut & store to 
MPEG PS without remuxing - but this is a proof it fails. I guess someone 
will need to look at it again).

> And then create a dvd (structure and TOC)
>
> dvdauthor -o dvd -f T1.mpg
> dvdauthor -o dvd -T

This does not work (again, tested with dvdauthor master HEAD code):

$ dvdauthor -o dvd -f T1.mpg
DVDAuthor::dvdauthor, version 0.6.18+.
Build options: gnugetopt graphicsmagick iconv freetype fribidi fontconfig
Send bug reports to <dvdauthor-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>

INFO: no default video format, must explicitly specify NTSC or PAL
ERR:  Must first specify -t, -m, or -x.


(the 'no default video format...' is OK since I've compiled it without
explicitly specifying '--enable-default-video-format=')


Anyway, thanks for suggesting how to do proper remuxing with ffmpeg.

Best regards,

Jan

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