Best codec with jit.qt.videoout
Jan 28, 2009 at 4:23am
Best codec with jit.qt.videoout
I want to use jit.qt.videoout to read qt movies. If I’m using DV format for my movies will they be readed directly without decompression / re-compression ? Or is it better to keep them in photo jpeg format for fast reading ?
(I don’t want to use the “direct to voc” possibility because I’m using a poly~ object that encapsulate multiple jit.qt.movie for fast access wich will complicate the send of “direct to voc” instructions, I think)
thank’s for help
Jan 28, 2009 at 2:41pm
completely wrong thing to do.
first, if you’re reading in DV footage, you should know that your
second, jit.qt.videout is solely for using nonstandard playback
third, you’d be best using a jit.qt.movie @adapt 1 @colormode uyvy
On Jan 27, 2009, at 11:23 PM, FXRobert wrote:
Jan 28, 2009 at 4:04pm
I don’t need “fast, slow and reverse”, just displaying movies via the fire wire link and a dv camera.
I do use the jit.videoplane method (though I didn’t know about the transform_reset 2 argument wich I gonna study)
I just want (in fact, I was asked to) to offer the user of the patch the possibity of diffusing via dv in case of failure of the vga system during a world tour in “non-well-equiped venues”.
So, even if it is wrong thing to do, you didn’t tell me what will be the best compression format to do it with the best performance. (It might exist anyway because my user use to do it with final cut pro…)
Jan 28, 2009 at 4:15pm
it’s my experience that firewire tends to more easily fail than the
On Jan 28, 2009, at 11:04 AM, FXRobert wrote:
Jan 28, 2009 at 6:30pm
On Jan 28, 2009, at 8:04 AM, FXRobert wrote:
> I don’t need “fast, slow and reverse”, just displaying movies via
jit.qt.videoout is unrelated to codec. It takes *uncompressed* jitter
If however, you just want to stream compressed DV files out over
jit.qt.movie’s “voc” and jit.qt.videoout are both covered in
> I do use the jit.videoplane method (though I didn’t know about the
In order to support this, you will have to copy the image rendered in
So the basic answer to what I perceive to be your problem, would be
> So, even if it is wrong thing to do, you didn’t tell me what will be
In general, people recommend time and time again, Photo JPEG 75% as
Btw, Joshua G., the DV codec does *not* use temporal compression. HDV
Which codecs are best for which purposes is a *big* discussion. I
My favorite codec resource website is:
It hasn’t been updated that much in recent years, but has good info
Jan 28, 2009 at 7:03pm
On Jan 28, 2009, at 1:30 PM, Joshua Kit Clayton wrote:
> Btw, Joshua G., the DV codec does *not* use temporal compression.
thanks for setting me straight on this.
Jan 28, 2009 at 8:56pm
thank you Joshua (the second one)
One thing I don’t understand :
“In order to support this, you will have to copy the image rendered in
Why using a Jitter matrix after rendering and not disabling OpenGL and link directly the jit.qt.movie to a jit.qt.videoout ?
Anyway, I will try the “voc” message to jit.qt.movie even if I feel lazy implement it in a poly~…
Thank’s you both
Feb 2, 2009 at 5:55pm
finaly got a dv camera to test the all thing.
The question is :
If I send a “getcodecquality” message to jit.qt.movie, “codecquality normal” is printed in the max window.
– Pasted Max Patch, click to expand. –
Copy all of the following text.Then, in Max, select New From Clipboard.
Any idea ?
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