[PD] recording GEM output weird framerate
Marco Donnarumma
devel at thesaddj.com
Mon Aug 16 12:58:50 CEST 2010
Thanks Cyrille,
I made different tests and I noticed what you said about the fps, that's a
very good tip.
Besides, I realized that I can gain 5/6 fps moving the gemwin in another
workspace (different from the one I actually see).
M
On Mon, Aug 9, 2010 at 2:44 PM, cyrille henry <ch at chnry.net> wrote:
> if you want a 1 min video, use a delay 60000 to start/stop.
> then, it will be perfect, even it it take 2 or 3 min to record...
>
> c
>
>
>
> Le 09/08/2010 15:31, Marco Donnarumma a écrit :
>
>> oh, ok.
>> Thanks Cyrille, you threw some light over my confusion.
>>
>> I now understand what you meant.
>> I'll give it a try waiting longer.
>>
>>
>> M
>>
>>
>> 2010/8/9 cyrille henry <ch at chnry.net <mailto:ch at chnry.net>>
>>
>>
>>
>>
>> Le 09/08/2010 13:58, Marco Donnarumma a écrit :
>>
>> @ Lazzaro: yes I know, thanks for specifying, but the problem is
>> that
>> the duration of audio and video files I record don't match each
>> other.
>>
>> @ Cirylle: ok, now maybe I understand.
>> I'm actually already using a similar abstraction of yours to
>> monitor fps :)
>> My patch is completely automatic, it's a
>> sonification/visualization of
>> large amount of data, thus I just press a toggle to start it.
>>
>> So:
>> if while recording the fps monitor shows 10fps, it means that also
>> pix_write will record only 10 frames per second and _not_ 20 as
>> I stated
>> in gemwin, is that correct?
>>
>> no, it will take 2 min to record 1min of video at 20fps.
>>
>>
>>
>> I was probably wrong assuming that whatever fps is stated in
>> gemwin will
>> be the recorded fps, even though the machine can't reproduce it in
>> real-time.
>>
>> Ok, so, if I can only record at 10 fps, what do you suggest to
>> finally
>> have a recorded video with a decent framerate? (apart from changing
>> machine...)
>>
>> waite longer...
>>
>> I guess I could use ffmpeg to double the framerate, but the
>> video might
>> be jittery...
>>
>> no, the video will be perfect, since everything is done with pd time.
>> pd time is no more real time, but that just a question of cpu/gpu.
>> everything else should be exactly the same.
>>
>> c
>>
>>
>>
>> M
>>
>>
>>
>>
>> 2010/8/9 cyrille henry <ch at chnry.net <mailto:ch at chnry.net>
>> <mailto:ch at chnry.net <mailto:ch at chnry.net>>>
>>
>>
>>
>> here is a simple abstraction that output the real rendering
>> frequency.
>> it help a lot to track this kind of problem.
>> c
>>
>>
>> Le 09/08/2010 13:02, Lazzaro Nicolò Ciccolella a écrit :
>>
>> Il 09/08/10 12.26, Lazzaro Nicolò Ciccolella ha scritto:
>>
>> Il 09/08/10 12.17, Marco Donnarumma ha scritto:
>>
>> Hi all,
>> it's been a week now I'm struggling to record
>> properly a
>> GEM output,
>> reading archives and forums.
>>
>> I have fairly complex audiovisual patch with
>> multiple
>> geos, four
>> pix_snaps to create motion blur effect for
>> 1280x320 res,
>> and data
>> exchange through local network.
>> However I can record in a really good quality
>> using both
>> pix_record
>> or pix_write.
>>
>> The problem is the recorded video is faster than
>> the
>> actual one.
>>
>> Hi, apologize me if it is a dumb answer, but if you
>> apply very
>> intensive
>> motion bur and other stuf in your patch the speed of
>> what you see in
>> your gem box will be very slow. The sequence of images
>> that is
>> generated
>> will necessarily faster than what you see when the patch
>> is running.
>>
>>
>>
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>> --
>> Marco Donnarumma aka TheSAD
>> Independent New Media Arts Professional, Performer, Teacher -
>> Edinburgh, UK
>>
>>
>> PORTFOLIO: http://marcodonnarumma.com
>> LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net |
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>>
>>
>>
>>
>> --
>> Marco Donnarumma aka TheSAD
>> Independent New Media Arts Professional, Performer, Teacher - Edinburgh,
>> UK
>>
>>
>> PORTFOLIO: http://marcodonnarumma.com
>> LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net |
>> http://www.flxer.net
>> EVENT: http://www.liveperformersmeeting.net
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--
Marco Donnarumma aka TheSAD
Independent New Media Arts Professional, Performer, Teacher - Edinburgh, UK
PORTFOLIO: http://marcodonnarumma.com
LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net |
http://www.flxer.net
EVENT: http://www.liveperformersmeeting.net
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