[PD] pix_record issues with geos and frames per second

[John Harrison]

In terms of recording the Geos here's a sample patch of how I might do 
that. Idea, method, and code stolen liberally from Marius Schebella's 
posts to this list.

In terms of framerate, I am not sure but I would have guessed that you 
could either send [auto 0( to [pix_record] then bang [pix_record] at the 
framerate you wish or change [gemwin] to be the framerate you wish and 
send [auto 1( to [pix_record] . If framerate doesn't seem to be matching 
what you expect, I wonder if [pix_record] is having trouble keeping up 
due to CPU load. You might try an uncompressed format for your codec.

-John

Derrick Barnicoat wrote:
> Hello,
> I am very much a newbie to PD/GEM and I just recently created my first video mixer/processer. I am using pix_mix to mix a video of an improvised performance I did with a dancer mixed with itself. I stretched each video over a cube geo. It is 2 chanels. One chanel is an uneffected version of the video. The other video has pix_rtx, pix_lumaoffset, pix_contrast, colorRGB with alpha, and pix_rgb2hsv as filters. Each cube has sliders assigned to control translation, rotation, and scale in unison. There are also three metro objects that control several inputs of the filters. 
>
> Everything works fine as far as live performance but I want to record the performance as a video file so I can send a version of it to the dancer and perhaps share it via youtube or another video sharing site. I have made various attempts using pix_record and pix_snap objects but the results have been disappointing in various ways.
>
> The first attempts resulted in a .mov file but at the wrong fps and thus to slow to match the audio track. As I understand it pix_record only outputs 20fps files but I have a dialog that offers other options. The problem is the dialog closes the gemwin everytime I try to use it and the dialog seems to be set to 12fps. So I tried importing 12fps and 20fps versions of the same video. 
>
> This was before I added the pix_snap object which I added to resolve another issue. The other issue is that the cube geos are not included in the recording. All the effects are present but no cubes, only the video without texturing to the geos. I researched various techniques to record the geos as well and the best option seemed to be to use pix_snap. 
>
> Pix_snap resulted in a single frame video with no geos. 
>
> I guess my question is basicly how do I record a Gem video with all elements included and at the correct fps? Is there another way besides pix_record? Is pix_write the other way? If so how would I use pix_write as it only exports .jpg and .tiff files? I am kind of hoping there is a way to churn out various improvised video manipulations of this performance and other videos I have done so I can share them. Any ideas or is GEM just not meant to be recorded. I mean I have seen GEM videos posted online so there must be an obvious way to do this that I am missing.
>
> I feel like I just don't know the proper way to use pix_record and pix_snap together, but maybe I am just going about the process in the absolutely wrong way. 
>
> Any ideas? please be as specific as possible because I am new to this and still don't understand allot. Thanks so much.
>
> Derrick
>
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-- 
John Harrison
http://alumni.media.mit.edu/~harrison


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