6 Mar
2003
6 Mar
'03
2:34 p.m.
hardware solution Prime Image video delay (both analog/digital)
www.primeimageinc.com
-----Original Message-----
From: Anders Torger [mailto:torger@ludd.luth.se]
Sent: Thursday, March 06, 2003 9:33 AM
To: linux-audio-dev(a)music.columbia.edu
Subject: [linux-audio-dev] How to delay video?
Not so much related to sound perhaps, but a bit. I'm trying to find a
solution to delay a video signal.
The idea is to be able to synchronise video with advanced surround sound
processing which runs in my convolution engine (BruteFIR) and has 100 -
400 ms I/O-delay (depending on configuration).
Any suggestion of hardware or software solution or both is ok, apart
from using a very very long cable, I have already thought of that one
:-). Since this concerns high-end reproduction on the sound part, it
would be good if the resulting video quality is good too.
The source would be a DVD-player (stand alone product) of some sort.
S-video output or RGB or whatever the best is...
/Anders Torger
7 Mar
7 Mar
5:13 a.m.
New subject: [linux-audio-dev] How to delay video?
Just at thought, but the best place to insert the delay would surely be
the MPEG data stream. Unfortunately, I don't know of any DVD players
which have MPEG out on the back, presumably because of the Movie maffia
being afraid you can take stills of their beautiful art and make it into
a lowly mouse mat or something. Since MPEG is ?about 2Mb/sec (just
guessing), it should be quite easy to buffer a few seconds of it.
Incidentally, RGB would be better than the S-Video: the chrominance in
S-Video is still band-limited and QAM, but separate from the luminance
(hence the S) so that they don't interfere with eachother.
I will poke around some studio catalogues and email you personally if I
find anything. It will give me something to do until Debian sid is less
utterly broken :(( (can't even get ALSA working on it at the moment!)
Sreelal Chandrasenan wrote:
hardware solution Prime Image video delay (both
analog/digital)
www.primeimageinc.com
-----Original Message-----
From: Anders Torger [mailto:torger@ludd.luth.se]
Sent: Thursday, March 06, 2003 9:33 AM
To: linux-audio-dev(a)music.columbia.edu
Subject: [linux-audio-dev] How to delay video?
Not so much related to sound perhaps, but a bit. I'm trying to find a
solution to delay a video signal.
The idea is to be able to synchronise video with advanced surround sound
processing which runs in my convolution engine (BruteFIR) and has 100 -
400 ms I/O-delay (depending on configuration).
Any suggestion of hardware or software solution or both is ok, apart
from using a very very long cable, I have already thought of that one
:-). Since this concerns high-end reproduction on the sound part, it
would be good if the resulting video quality is good too.
The source would be a DVD-player (stand alone product) of some sort.
S-video output or RGB or whatever the best is...
/Anders Torger
--
Dr Nick Bailey n.j.bailey(a)elec.gla.ac.uk
Centre for Music Technology http://cmt.gla.ac.uk/
Dept of Electronics and Electrical Eng http://www.elec.gla.ac.uk/
The University of Glasgow http://www.gla.ac.uk
European Copyright Directive/Software Patenting:
Help us fight the war on terrorism.
http://cmt.gla.ac.uk/Info/swpatents.html
The OpenDrama Survey: please tell us your opinions!
http://markov.music.gla.ac.uk/Projects/OpenDrama/OD-Survey/
3:30 p.m.
New subject: [linux-audio-dev] How to delay video?
On Friday 07 March 2003 10.04, Nick Bailey wrote:
Just at thought, but the best place to insert the
delay would surely
be the MPEG data stream. Unfortunately, I don't know of any DVD
players which have MPEG out on the back, presumably because of the
Movie maffia being afraid you can take stills of their beautiful art
and make it into a lowly mouse mat or something. Since MPEG is ?about
2Mb/sec (just guessing), it should be quite easy to buffer a few
seconds of it.
Incidentally, RGB would be better than the S-Video: the chrominance
in S-Video is still band-limited and QAM, but separate from the
luminance (hence the S) so that they don't interfere with eachother.
Ok, I see there are some hardware solutions in separate boxes, which
probably works quite well, but price is quite high, it seems to be at
least 5000 US dollars to get a video delay box.
/Anders
8006
days inactive
8007
days old
linux-audio-dev@lists.linuxaudio.org
2 comments
3 participants
participants (3)
-
Anders Torger -
Nick Bailey -
Sreelal Chandrasenan