<div dir="ltr">pix_record uses the actual time passed between frames when writing a Quicktime file. This is proven accurate in my testing (probably a million files at this point). One thing you will not get is a perfect 29.97 file though. That requires either offline processing like Final Cut or a dedicated clock like a DV cam.<br>
<br>The more objects running the longer the time between frames, plus the
time it takes to compress the frame means that it can take a while to
record. The choice of codec is very important too. H.264 is not going to work well for real time capture, but Apple Intermediate is designed for it. <br><br><div class="gmail_quote">On Mon, Aug 4, 2008 at 3:14 PM, Spencer Russell <span dir="ltr"><<a href="mailto:spencer.f.russell@gmail.com">spencer.f.russell@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I'm using pix_record to write processed video captured live from a DV<br>
cam to disk, and then playing it back with pix_film. Unfortunately, it<br>
seems to record at around 16fps even though GEM should be running at<br>
20. I tried lowering GEM to 15 fps thinking that maybe it was having<br>
trouble keeping up, but then it wrote at around 12fps. The framerates<br>
are the ones that show up in Quicktime player, and seems to be the<br>
same as when I play back with pix_film. I've tried recording both with<br>
[auto 1( and banging it with a metro, but strangely it doesn't seem to<br>
matter how fast I run the metro. I tried it at 15 fps and 50fps with<br>
the gemwin at 20fps and the recorded video seemed to be the same.<br>
<br>
What controls the framerate of pix_record and pix_film? I'd think that<br>
using [auto 1( would do both of them at the GEM rate, but apparently<br>
that seems to not be happening.<br>
<br>
This is on my friend's MacBook pro running OS X.<br>
<br>
thanks in advance,<br>
spencer<br>
<br>
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