19 Oct
2013
19 Oct
'13
12:30 a.m.
On Fri, Oct 18, 2013 at 11:25 PM, Monty Montgomery <xiphmont(a)gmail.com> wrote:
I meant in terms of timing shift of audio vs video?
James
On Fri, Oct 18, 2013 at 5:36 PM, James Stone
<jamesmstone(a)gmail.com> wrote:
OK - that's encouraging at least!
I am wanting to get some audio and video recorded
- sample accurately
- so there is minimal delay between audio and video, and no drift.
Any camera will give you this if you use the audio input on the
camera. Or do you mean you need to record to some other device and
sync later? If the latter, you're in for a world of pain. The clocks
will drift unless you're using a shared clock, and that's a whole
different class of professional equipment....
Can
any format do this?
All of them. The trouble people usually have is software that handles
the sync incorrectly (or doesn't really try to handle it at all. If
it's based on ffmpeg.... yeah 'all bets are off').
Do you have recommendations about how to record
a
file which will play back with perfect audio and video sync on all
players (file size is not an issue)?
Just about any camera made.
Secondly, I am wanting to intentionally shift the
audio timing so it
may be 5ms/10ms/50ms/100ms or more out of time with the video. Do you
have any suggestions on software which will do this?
Any NLE will do this. I use Cinelerra, but I'd urge you not to :-)
Lastly, do any of you know any research about the
limits of human
perception with these kinds of things?
You'll not hit the limits of human perception in video-- even 10 bit
isn't quite there, and you ca always get closer to see more
resolution.