Hi,
I would second Mick's suggestion, with a small modification.
Make your video with a sound track of just Linear Timecode, or with
LTC on one track and a mono audio guide track on the second track. In
the latter case you have to be careful that there is no cross-talk of
audio onto the LTC output. The timecode can be recorded at a high
level, as it only goes to the audio playback system and nowhere else.
Then, using an audio interface such as a MOTU, which can accept LTC,
lock a DAW on a (second) computer to LTC. The MOTU interface
effectively converts LTC to MidiTImecode. Allow at least 5 seconds
for the DAW to lock to LTC, so pad the movie with 5 seconds of black.
It is not good practice to start LTC at zero. Start it at
09:59:55:00, or 00:59:55:00, so that the picture and sound both start
on an hour, 10 hours or one hour.
That way you can maintain sync without having to nudge start values.
I have used this method several times with computers, Brightsign and
other media players, and with Watchout systems. The LTC often ends up
coming out of a computer 3.5mm stereo jack, but even this is reliable.
Other MOTU Midi interfaces, such as the Micro Express can also work
for this purpose, and you can then use other audio interfaces that
you may possess.
Once set up to work, you can also send Midi Timecode to other
destinations, such as lighting controllers.
Good Luck,
Dave Hunt
On 8 Sep 2016, at 17:00, sursound-requ...@music.vt.edu wrote:
From: mick ritchie <m...@superorg.com>
Date: 8 September 2016 11:54:51 BDT
To: Surround Sound discussion group <sursound@music.vt.edu>
Subject: Re: [Sursound] Muti-channel ambisonic audio in sync with
video
Hi
interesting xjadeo which ive never seen but if youre using reaper u
could just use a version on each machine and use your audio
machine to generate timecode and send to reaper on the video
machine via network midi and have Reaper with only video on it -
I understand Reaper5 is better for video but havent used it. In
osx its all in the system but with windows machines
youd have to set up some network midi software to recieve or and
send. MidiYoke and LoopBe are in my memory but i dont which
windows os they work with and you dont mention what youre using
I use ql;ab for video things but its not cheap and only mac - but
well worth it
mick
On 8 Sep 2016, at 07:52, ByungJun Kwon wrote:
Hello list,
I have an exhibition of playing heavy duty video file together
with 16ch interleaved ambisonic wave file. Audio is rendered
through reaper using ambisonic decoder so each channel is just
feeding to relevant 16 speakers to make audio playback simple.
Since video file is very heavy I'd like to have separate machine
for processing video and audio.
Could anyone on the list suggest cheap(or free) solution to sync
multi-channel audio and video?
Best, byungjun
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