Re: [Debconf-video] Report from last week-end's single-user single-day DebConf Video sprint
On 2017-06-27 20:40:18 (+0200), Kyle Robbertze <krobbertze@gmail.com> wrote:
> On 27/06/2017 17:54, Peter 'p2' De Schrijver wrote:
> > On 2017-06-27 13:26:37 (+0200), Wouter Verhelst <w@uter.be> wrote:
> >> On Tue, Jun 27, 2017 at 12:51:40AM +0200, Nicolas Dandrimont wrote:
> >>>[...]
> >>> - Audio input setup: I only had batteries for the tests (no AC adapter) and I
> >>> noticed the Sony would lose audio input settings when rebooting. As it
> >>> defaulted to shoe mic it's not a showstopper.
> >>
> >> [...]
> >
> > Rather than routing the audio through the camera, maybe just get something
> > like this: https://global.focusrite.com/usb-audio-interfaces/scarlett-2i2
> > or a version with more interfaces and feed the audio directly into the mixer
> > PC. I think this should also make cabling a little easier. Using a version
> > with more inputs, would also allow us to feed the environment audio directly
> > into the mixer PC, simplifying the audio mixer setup.
>
> There are two reasons for running through the camera:
> 1 - It removes sync issues. There are delays inherent in the analogue to
> digital conversion for both video and audio. When they are separate
> input streams, sync is not maintained and drift between the end result's
> audio and video can become noticeable.
>
Only if you happen to use the camera you're feeding the audio into as the
video source. If the speaker plays a video clip for example, you will still
see sync issues.
> 2 - We already mix a house feed on an analogue sound board. It is
> trivial to add room mics to this (not run out to the house mix) and run
> the result to the camera, no extra equipment required.
>
If you have a mixer which can do submixes, not all can. I've seen enough
mixers at debconfs which did not have that ability.
> Cheers
> Kyle
>
Peter.
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