|Marco Donnarumma||Aug 9, 2010 3:16 am|
|Lazzaro Nicolò Ciccolella||Aug 9, 2010 3:25 am|
|Marco Donnarumma||Aug 9, 2010 3:40 am|
|cyrille henry||Aug 9, 2010 3:58 am|
|Lazzaro Nicolò Ciccolella||Aug 9, 2010 4:01 am|
|cyrille henry||Aug 9, 2010 4:11 am||.zip|
|Marco Donnarumma||Aug 9, 2010 4:57 am|
|cyrille henry||Aug 9, 2010 5:53 am|
|Marco Donnarumma||Aug 9, 2010 6:31 am|
|Lazzaro Nicolò Ciccolella||Aug 9, 2010 6:37 am|
|cyrille henry||Aug 9, 2010 6:44 am|
|Marco Donnarumma||Aug 16, 2010 3:58 am|
|Subject:||Re: [PD] recording GEM output weird framerate|
|From:||cyrille henry (ch...@chnry.net)|
|Date:||Aug 9, 2010 3:58:59 am|
Le 09/08/2010 12:40, Marco Donnarumma a écrit :
Hi, thanks for your fast reply! I think I know how to use the object, but it seems it doesn't behave as it should, or I am missing something.
I've been using pix_write with [auto 1( or in combination with pix_snap, and my gemwin is set to 20.
The issue is that when ffmpeg build the movie out of the images sequence (at 20 fps), the resulting video is shorter then it should (i.e. 1 minute instead of 3). ...the same happens when I use pix_record.
when recording, the fps usually drop, because it need so much CPU that's pd
can't do everything in real time. so pd time is 3 times slower than real time. (it will not render/record 20fps,
what i usually do is to be able to play the sequence i want to record without
human interaction (using only pd timing). so when i record it, everything is slower than real time, but the resulting
video is correct.
does anybody have an idea about it?
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. It doesn't matter if I record frames with pix_write and build a movie with ffmpeg or I record a whole movie with pix_record, the resulting movie is faster anyway. (I can confirm it 100% as I also record audio at the same time, and it is indeed longer)
This happens on a machine with ATI card, both in ubuntu jaunty and windows with Pd-ext 42.5 rc 5.
What is even weirder is that if I load the recorded video into Pd with pix_film it tells me the video has 115 fps, but with any other software fps is between 20 and 30 (which I assume should be the proper framerate).
Anybody experienced the same? What could I do about it?
Hi, I only have experience with pix_write oby (it generate tif/png/jpeg image sequence) and it write at framerate specified on the gemwin oby. If you have [gemwin 50] you have 50 frame per second image sequnce, if you set [gemwin 25] you have 25 .....
-- Marco Donnarumma aka TheSAD Independent New Media Arts Professional, Performer, Teacher - Edinburgh, UK