13 Jan
2011
13 Jan
'11
11:32 a.m.
hi *!
i'm trying to get a couple home-spun surround mixes out to friends and
customers. i wonder: is there a way to author dvds under linux with dts
audio tracks? ac3 won't really suffice in terms of sound quality.
better yet, i'd like to use five uncompressed pcm streams, and the
wikipedia article on dvd-video seems to indicate it's possible - has
anyone done it, and will consumer dvd players handle it?
best,
jörn
13 Jan
13 Jan
12:59 p.m.
On 01/13/2011 11:32 AM, Jörn Nettingsmeier wrote:
hi *!
Hi Joern,
i'm trying to get a couple home-spun surround
mixes out to friends and
customers. i wonder: is there a way to author dvds under linux with dts
audio tracks?
The dvd authoring tool /should/ not care what data you give it.
I like `dvdauthor` but takes some learning writing its XML format;
the `devede` GUI can create them for you.
ffmpeg can encode ac3/dts - well, check
`ffmpeg -formats` and `ffmpeg -codecs` on your box.
ffmpeg versions differ greatly.
ac3 won't really suffice in terms of sound
quality.
You do realize that you can also just use raw PCM for audio on DVDs:
48 kHz or 96 kHz, 16 or 24 bit, 2-6 channels; but only up to 6144 kbit/s
better yet, i'd like to use five uncompressed pcm
streams, and the
wikipedia article on dvd-video seems to indicate it's possible
oh, you did realize :)
- has anyone done it
stereo PCM: yes. 5chan: no
and will consumer dvd players handle it?
I use 'ogle' http://www.dtek.chalmers.se/groups/dvd/ to test DVD iso
images. It does not use any big frameworks like ffmpeg or gstreamer for
the decoding and besides supporting DVD-menus it usually only plays what
will also play on a hardware DVD player.
robin
best,
jörn
--
Robin Gareus
web: http://gareus.org/ mail: robin(a)gareus.org
lab: http://citu.fr/ chat: xmpp:rgareus@ik.nu
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15 Jan
15 Jan
1:54 a.m.
On 01/13/2011 12:59 PM, Robin Gareus wrote:
good pointer, i hadn't heard of ogle yet.
best,
jörn
On 01/13/2011 11:32 AM, Jörn Nettingsmeier wrote:
You do realize that you can also just use raw PCM for
audio on DVDs:
48 kHz or 96 kHz, 16 or 24 bit, 2-6 channels; but only up to 6144 kbit/s
i'll try it. does anyone have an idea what the format should be? channel
order?
interleaved?
sample rate?
bit depth?
better yet, i'd like to use five uncompressed
pcm streams, and the
wikipedia article on dvd-video seems to indicate it's possible
oh, you did realize :)
- has anyone done it
stereo PCM: yes. 5chan: no and will
consumer dvd players handle it?
I use 'ogle' http://www.dtek.chalmers.se/groups/dvd/ to test DVD iso
images. It does not use any big frameworks like ffmpeg or gstreamer for
the decoding and besides supporting DVD-menus it usually only plays what
will also play on a hardware DVD player.
5:50 p.m.
On 01/15/2011 01:54 AM, Jörn Nettingsmeier wrote:
On 01/13/2011 12:59 PM, Robin Gareus wrote:
1 2 3 4 5 :) - I don't know.
IIRC 5.1 is L,R,C,LFE,LS,RS - but double check that.
On 01/13/2011 11:32 AM, Jörn Nettingsmeier wrote:
You do realize that you can also just use raw PCM
for audio on DVDs:
48 kHz or 96 kHz, 16 or 24 bit, 2-6 channels; but only up to 6144 kbit/s
i'll try it. does anyone have an idea what the format should be? channel
order? better yet, i'd like to use five uncompressed
pcm streams, and the
wikipedia article on dvd-video seems to indicate it's possible
oh, you did realize :)
- has anyone done it
stereo PCM: yes. 5chan: no interleaved?
yes
sample rate?
48kSPS or 96kSPS
bit depth?
signed 16 or 24 bits - big-endian
The ffmpeg dvd-muxer is somewhat broken. It produces a lot of "packet
too large" errors when muxing PCM into a mpeg/dvd container. Apparently
one can fix that using ffmpeg's -packetsize -bufsize -muxrate options,
but I never found out the right parameters for those.
What works is using 'mplex' (from mjpeg-tools http://mjpeg.sf.net ) for
doing the muxing.
Here's a walk-though:
1) generate a raw PCM file of the audio - it needs to be signed
big-endian and (re)name the file to end with .lpcm (mplex does recognize
it by extension) - I used rezound but many tools can do that job.
2) generate a dummy video (black-frame or sth. 720x576) of the same
length as (or longer than) the audio. I sym-linked a black_frame.png to
bf_000.png, bf_001.png, bf_002.png and created a 5 min video with:
ffmpeg -r 1/100 -i /tmp/bf_%03d.png \
-f mpeg2video -an -r 25 -aspect 4:3 /tmp/video.mpg
3) MUX the two together: (adjust the -L param to match the audio format.
e.g. '-L 48000:5:24' for a 5 channel 24 bps file.)
mplex -f 8 -o /tmp/dvdout.mpg -L 48000:2:16 \
/tmp/video.mpg \
/tmp/audio-pcm_s16be.lpcm
4) Master it:
I whipped up a dvdauthor XML file and mastered it with
dvdauthor -o /tmp/dvd/ -x /tmp/movie.xml
mkisofs -dvd-video -o /tmp/dvd.iso /tmp/dvd/
You can use the 'devede' GUI to create dvdauthor XML files and create
the ISO. Note: When adding a file with 'devede' check the
Advanced->Misc->This file is already a DVD-suitable MPEG-PS file
option. Otherwise 'devede' will transcode it again.
5) test it:
ogle /tmp/dvd.iso
Note: you may need to edit your ~/.oglerc and change the audio-driver
from oss to alsa. - `man oglerc` explains how.
It should be possible to put an audio-track without video on a DVD,
'mplex' accepts that, but I could not convince 'dvdauthor' to create a
.vob from that.
If you know or find out how, please let me know.
HTH,
robin
--
Robin Gareus
web: http://gareus.org/ mail: robin(a)gareus.org
lab: http://citu.fr/ chat: xmpp:rgareus@ik.nu
Public Key at http://pgp.mit.edu/ http://gareus.org/public.asc
Fingerprint : 7107 840B 4DC9 C948 076D 6359 7955 24F1 4F95 2B42
13 Jan
13 Jan
1:23 p.m.
Jörn,
a standard DVD can only play back PCM stereo or AC-3 multitrack audio.
In order to burn multitrack uncompressed audio you need to use the DVD-A format. From what
I see, most DVD players do not recognize that format, only "hi end" devices like
the upper price Pioneers.
To burn DVD-As there's a VERY affordable application by Minnetonka 'diskwelder
bronze', 35 USD if I remember. It works like a snap and all DVD-A compatible players
recognize it (that I've tried). But that is Win only software, you bet.
Good luck,
Jürgen
On Jan 13, 2011, at 6:32 PM, Jörn Nettingsmeier wrote:
hi *!
i'm trying to get a couple home-spun surround mixes out to friends and customers. i
wonder: is there a way to author dvds under linux with dts audio tracks? ac3 won't
really suffice in terms of sound quality.
better yet, i'd like to use five uncompressed pcm streams, and the wikipedia article
on dvd-video seems to indicate it's possible - has anyone done it, and will consumer
dvd players handle it?
best,
jörn
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2:14 p.m.
Us nixers have:
http://dvd-audio.sourceforge.net/
I burned a DVD-A disc of a track I recorded a few years back but didn't have
a DVDA player to play the thing on at the time- I went to a local Richer
Sounds (UK HiFi retailer) and asked if they'd let me try playing it but they
weren't having any of it so "Boo!" to RS! However, my new housemate does
have a SACD/ DVDA player so I intend to give this another go shortly- in
next few days with any luck so I can get back to you on that if you want?
They've re-issued the early Crimson albums on DVDA so I'd like to get some
of them in 5.1 DVDA too. He's also got a frickn' Laserdisc player which
impressed the hell out of me for some silly reason but we've not got any LDs
yet so thats another disc issue on my TODO list.
danboid
2011/1/13 jurgen <noise.now(a)gmail.com>
Jörn,
a standard DVD can only play back PCM stereo or AC-3 multitrack audio.
In order to burn multitrack uncompressed audio you need to use the DVD-A
format. From what I see, most DVD players do not recognize that format, only
"hi end" devices like the upper price Pioneers.
To burn DVD-As there's a VERY affordable application by Minnetonka
'diskwelder bronze', 35 USD if I remember. It works like a snap and all
DVD-A compatible players recognize it (that I've tried). But that is Win
only software, you bet.
Good luck,
Jürgen
On Jan 13, 2011, at 6:32 PM, Jörn Nettingsmeier wrote:
hi *!
i'm trying to get a couple home-spun surround mixes out to friends and
customers. i wonder: is there a way to author dvds under linux with dts
audio tracks? ac3 won't really suffice in terms of sound quality.
better yet, i'd like to use five uncompressed
pcm streams, and the
wikipedia article on dvd-video seems to indicate it's
possible - has anyone
done it, and will consumer dvd players handle it?
best,
jörn
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
15 Jan
15 Jan
1:51 a.m.
On 01/13/2011 02:14 PM, allcoms wrote:
Us nixers have:
http://dvd-audio.sourceforge.net/
2011/1/13 jurgen <noise.now(a)gmail.com <mailto:noise.now@gmail.com>>
Jörn,
a standard DVD can only play back PCM stereo or AC-3 multitrack audio.
In order to burn multitrack uncompressed audio you need to use the
DVD-A format. From what I see, most DVD players do not recognize
that format, only "hi end" devices like the upper price Pioneers.
i've had some rather traumatic experiences with dvd-audio that have led
me to believe that it doesn't really work in practice. the way i see it,
i've got a significantly higher probability that $RANDOM_USER will be
able to play a 5.1 audio file correctly than to have a dvd-audio capable
player that will not fsck up the navigation, play the tracks in the
right order and not do other unspeakable things (such as producing dirac
pulses every 3 minutes - yeah i've seen it, and it was a hi-end product,
and no, we used the analog outs).
5006
days inactive
5008
days old
linux-audio-user@lists.linuxaudio.org
6 comments
4 participants
participants (4)
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allcoms -
jurgen -
Jörn Nettingsmeier -
Robin Gareus