recording movies for quality

Jun 1, 2008 at 4:32pm

recording movies for quality

Hello all.

I am currently working on a project where I need to record several thousand filmclips via jitter into a database. They need to be recorded with sound. The clips are of people speaking(sitting still) and will be recorded using a new ibook. So far I am unhappy with the quality I have been achieving on the recorded clips.

The question is simple: What is the best procedure for recording films from a Hd camera via firewire with Jitter. The only criteria is to get the highest possible quality. The sound comes from msp could be recorded as a seperate file joined with the quicktime file, whatever facilitates the highest quality. Tips regarding codecs, camera settings or other relevant info would be much appreciated.

So far I have been using jit.qt.grab in combination with jit.vcr, also tried grabbing directly to disk from jit.qt.grab but did not see any increase in performance.

Any tips appreciated.

Thank you.
Thor

#38188
Jun 1, 2008 at 4:43pm

What messages are you sending with your “write” message? maybe you are
using an inappropriate codec, or not setting the quality to “max”.

M

On Jun 1, 2008, at 12:32, Thorolf Thuestad wrote:

>
> Hello all.
>
> I am currently working on a project where I need to record several
> thousand filmclips via jitter into a database. They need to be
> recorded with sound. The clips are of people speaking(sitting still)
> and will be recorded using a new ibook. So far I am unhappy with the
> quality I have been achieving on the recorded clips.
>
> The question is simple: What is the best procedure for recording
> films from a Hd camera via firewire with Jitter. The only criteria
> is to get the highest possible quality. The sound comes from msp
> could be recorded as a seperate file joined with the quicktime file,
> whatever facilitates the highest quality. Tips regarding codecs,
> camera settings or other relevant info would be much appreciated.
>
> So far I have been using jit.qt.grab in combination with jit.vcr,
> also tried grabbing directly to disk from jit.qt.grab but did not
> see any increase in performance.
>
> Any tips appreciated.
>
> Thank you.
> Thor

#132719
Jun 4, 2008 at 9:26am

I have tried several codecs, and after much experimentation am using dvpal instead of photojpeg and grabing directly to disk with jit.qt.grab. A lack of clarity on my part that Jitter in this instance is just a layer working over quicktime caused confusion.

The main problem I am having now is that I am using a Hd camera but am only able to access it in dv mode. I would prefer to get hd if at all possible. I am not having any problems recording hd in other applications. The hd optiuons show up in the device list form jit.qt.grab, but I am not able to access them, only the dv option is functional.

Any tips on why that is and how the situation may be corrected?

#132720

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