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transcode replacement to rip audio from video dvd

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  transcode replacement to rip audio from video dvd hobbes@poukram.net - 2017-05-29 21:30 +0200
    Re: transcode replacement to rip audio from video dvd <tomas@tuxteam.de> - 2017-05-29 21:40 +0200
      Re: transcode replacement to rip audio from video dvd hobbes@poukram.net - 2017-05-29 22:30 +0200
        Re: transcode replacement to rip audio from video dvd The Wanderer <wanderer@fastmail.fm> - 2017-05-29 22:40 +0200
          Re: transcode replacement to rip audio from video dvd <tomas@tuxteam.de> - 2017-05-29 22:50 +0200
        Re: transcode replacement to rip audio from video dvd <tomas@tuxteam.de> - 2017-05-29 22:50 +0200
      Re: transcode replacement to rip audio from video dvd Brian <ad44@cityscape.co.uk> - 2017-05-30 01:30 +0200
        Re: transcode replacement to rip audio from video dvd <tomas@tuxteam.de> - 2017-05-30 09:30 +0200
    Re: transcode replacement to rip audio from video dvd songbird <songbird@anthive.com> - 2017-05-29 23:10 +0200

#181573 — transcode replacement to rip audio from video dvd

Hello,

in the past I used a nice little script to rip the audio part of video
dvds (mostly concerts) to mp3 files.

That script used the tool transcode, here is the main line:

for i in {1..$NUM}; do transcode -x null,dvd -y null,tcaud -i $DEVICE -T $TITLE,$i,$ANGLE -a $AUDIO --lame_preset standard -E 44100,16,2 -m $NOM$i.mp3; done

So it ripped the audio part of each chapter of the main title, and
converted it to mp3 files.

But transcode has been removed from debian because «replacements exist»:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817199

I have searched a lot, but I can't find a tool to just rip the audio
part of dvd chapters. ffmpeg is more than capable to do the encoding
part, but it lacks dvd ripping capabilities. HandbrakeCli could be a
contender, but it absolutely wants to rip and encode video, which in my
case is a waste of ressources.

Any idea ?

Thanks,
-- 
Rémi

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#181574

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On Mon, May 29, 2017 at 09:25:53PM +0200, hobbes@poukram.net wrote:
> Hello,
> 
> in the past I used a nice little script to rip the audio part of video
> dvds (mostly concerts) to mp3 files.
> 
> That script used the tool transcode, here is the main line:
> 
> for i in {1..$NUM}; do transcode -x null,dvd -y null,tcaud -i $DEVICE -T $TITLE,$i,$ANGLE -a $AUDIO --lame_preset standard -E 44100,16,2 -m $NOM$i.mp3; done
> 
> So it ripped the audio part of each chapter of the main title, and
> converted it to mp3 files.
> 
> But transcode has been removed from debian because «replacements exist»:
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817199
> 
> I have searched a lot, but I can't find a tool to just rip the audio
> part of dvd chapters. ffmpeg is more than capable to do the encoding
> part, but it lacks dvd ripping capabilities. HandbrakeCli could be a
> contender, but it absolutely wants to rip and encode video, which in my
> case is a waste of ressources.

You can try (caution: untested!) something like

  ffmpeg -i <input file> -vn -acodec copy <output file>

This would leave the audio format unchanged. By playing with the
"-acodec copy" you can change the output audio format.

I'm sure other programs, like mplayer are also capable to do the
trick.

Cheers
- -- tomás
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#181575

<tomas@tuxteam.de> writes:

> You can try (caution: untested!) something like
>
>   ffmpeg -i <input file> -vn -acodec copy <output file>
>
> This would leave the audio format unchanged. By playing with the
> "-acodec copy" you can change the output audio format.
>
> I'm sure other programs, like mplayer are also capable to do the
> trick.

yes this would work if I had a file as input. But I have a dvd, and
ffmpeg seems unable to read properly from a dvd. Properly meaning
selecting individual titels, chapters, and audio streams.

So basically, what I'm missing is the ripping tool, something that can
rip an individual chapter from a dvd title and pipe it to ffmpeg.

Thanks,
-- 
Rémi

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#181576

[Multipart message — attachments visible in raw view] — view raw

On 2017-05-29 at 16:25, hobbes@poukram.net wrote:

> <tomas@tuxteam.de> writes:
> 
>> You can try (caution: untested!) something like
>>
>>   ffmpeg -i <input file> -vn -acodec copy <output file>
>>
>> This would leave the audio format unchanged. By playing with the
>> "-acodec copy" you can change the output audio format.
>> 
>> I'm sure other programs, like mplayer are also capable to do the
>> trick.
> 
> yes this would work if I had a file as input. But I have a dvd, and
> ffmpeg seems unable to read properly from a dvd. Properly meaning
> selecting individual titels, chapters, and audio streams.
> 
> So basically, what I'm missing is the ripping tool, something that
> can rip an individual chapter from a dvd title and pipe it to ffmpeg.

Maybe try 'mplayer -dumpstream -dumpfile FILENAME dvd://CHAPTERNUM', or
the same with 'dvdnav://' if you can get that working?

Or 'mencoder -oac copy -novideo -o FILENAME dvd://CHAPTERNUM',
similarly, and possibly with an appropriate '-of' option if one is not
selected automatically? (Per the man page, you may need '-vc null'
instead of '-novideo', but I haven't seen that in practice.)

I haven't done much with this sort of thing recently, but once upon a
time those are the sorts of things I'd have tried.

-- 
   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man.         -- George Bernard Shaw

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#181577

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On Mon, May 29, 2017 at 04:36:49PM -0400, The Wanderer wrote:
> On 2017-05-29 at 16:25, hobbes@poukram.net wrote:
> 
> > <tomas@tuxteam.de> writes:
> > 
> >> You can try (caution: untested!) something like
> >>
> >>   ffmpeg -i <input file> -vn -acodec copy <output file>
> >>
> >> This would leave the audio format unchanged. By playing with the
> >> "-acodec copy" you can change the output audio format.
> >> 
> >> I'm sure other programs, like mplayer are also capable to do the
> >> trick.
> > 
> > yes this would work if I had a file as input. But I have a dvd, and
> > ffmpeg seems unable to read properly from a dvd. Properly meaning
> > selecting individual titels, chapters, and audio streams.
> > 
> > So basically, what I'm missing is the ripping tool, something that
> > can rip an individual chapter from a dvd title and pipe it to ffmpeg.
> 
> Maybe try 'mplayer -dumpstream -dumpfile FILENAME dvd://CHAPTERNUM', or
> the same with 'dvdnav://' if you can get that working?
> 
> Or 'mencoder -oac copy -novideo -o FILENAME dvd://CHAPTERNUM',
> similarly, and possibly with an appropriate '-of' option if one is not
> selected automatically? (Per the man page, you may need '-vc null'
> instead of '-novideo', but I haven't seen that in practice.)

Yes, "mencoder" was the magic word I was looking for, mplayer's
transcoder sibling. Thanks, Wanderer :)

cheers
- -- t
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#181578

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On Mon, May 29, 2017 at 10:25:05PM +0200, hobbes@poukram.net wrote:
> <tomas@tuxteam.de> writes:
> 
> > You can try (caution: untested!) something like
> >
> >   ffmpeg -i <input file> -vn -acodec copy <output file>
> >
> > This would leave the audio format unchanged. By playing with the
> > "-acodec copy" you can change the output audio format.
> >
> > I'm sure other programs, like mplayer are also capable to do the
> > trick.
> 
> yes this would work if I had a file as input. But I have a dvd, and
> ffmpeg seems unable to read properly from a dvd. Properly meaning
> selecting individual titels, chapters, and audio streams.
> 
> So basically, what I'm missing is the ripping tool, something that can
> rip an individual chapter from a dvd title and pipe it to ffmpeg.

No DVDs here to play with at the moment. I know mplayer can do DVDs
and it can extract streams (that is, the audio channels, among others).

Ffmpeg seems to need some help to concatenate the .VOB chunks, see [1]

cheers
- -- tomás
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#181580

On Mon 29 May 2017 at 21:38:53 +0200, tomas@tuxteam.de wrote:

> On Mon, May 29, 2017 at 09:25:53PM +0200, hobbes@poukram.net wrote:
> > Hello,
> > 
> > in the past I used a nice little script to rip the audio part of video
> > dvds (mostly concerts) to mp3 files.
> > 
> > That script used the tool transcode, here is the main line:
> > 
> > for i in {1..$NUM}; do transcode -x null,dvd -y null,tcaud -i $DEVICE -T $TITLE,$i,$ANGLE -a $AUDIO --lame_preset standard -E 44100,16,2 -m $NOM$i.mp3; done
> > 
> > So it ripped the audio part of each chapter of the main title, and
> > converted it to mp3 files.
> > 
> > But transcode has been removed from debian because «replacements exist»:
> > 
> > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817199
> > 
> > I have searched a lot, but I can't find a tool to just rip the audio
> > part of dvd chapters. ffmpeg is more than capable to do the encoding
> > part, but it lacks dvd ripping capabilities. HandbrakeCli could be a
> > contender, but it absolutely wants to rip and encode video, which in my
> > case is a waste of ressources.
> 
> You can try (caution: untested!) something like
> 
>   ffmpeg -i <input file> -vn -acodec copy <output file>
> 
> This would leave the audio format unchanged. By playing with the
> "-acodec copy" you can change the output audio format.
> 
> I'm sure other programs, like mplayer are also capable to do the
> trick.

I successfully used vobcopy and then your command with output.ac3 as
<output file>.

--
Brian.

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#181587

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On Tue, May 30, 2017 at 12:24:53AM +0100, Brian wrote:
> On Mon 29 May 2017 at 21:38:53 +0200, tomas@tuxteam.de wrote:

[...]

> > You can try (caution: untested!) something like
> > 
> >   ffmpeg -i <input file> -vn -acodec copy <output file>
> > 
> > This would leave the audio format unchanged. By playing with the
> > "-acodec copy" you can change the output audio format.
> > 
> > I'm sure other programs, like mplayer are also capable to do the
> > trick.
> 
> I successfully used vobcopy and then your command with output.ac3 as
> <output file>.

Thanks, now I'm smarter too :)

cheers
- -- tomás
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#181579

hobbes@poukram.net wrote:
...
> I have searched a lot, but I can't find a tool to just rip the audio
> part of dvd chapters. ffmpeg is more than capable to do the encoding
> part, but it lacks dvd ripping capabilities. HandbrakeCli could be a
> contender, but it absolutely wants to rip and encode video, which in my
> case is a waste of ressources.

  not directly related to dvd ripping but for the
encoding parts:

  pacpl is one i've used.

  when downloading the file check for alternative
formats which may make a lot of sense to avoid 
having to download unneeded bytes and then convert.

$ youtube-dl -F will list them.


  songbird

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