hi ivica,
to the gem object. My understanding is that you can have as many gem objects in a patch and each with different FPS. So for instance, frame 20 will give you 20 fps on that gem tree.
yes, you're right. but if I'm not totally mistaken, there is no way to reduce the resolution of the frames delivered by pix_video on linux - so you just have to live with the high cpu usage caused by pix_video (or, for that matter, libdv - cannot check right now) in conjunction with ieee1394 hardware at "normal" frame rates. i'd anytime favour a solution that delivers 25 fps with a 360x288 resolution and causes 20% cpu usage over one with 10fps@720x576 and 50% cpu load.
with kind regards, thoralf.
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Hi all, I use [colorspace YUV< and [pix_rgba] with [pix_video] on Ubuntu LInux Intel/Nvidia using a ieee1394 camera and the colors are ok. They were not when I tried to use RGB out-of-the-box.
2007/3/21, Thoralf Schulze thoralf_schulze@yahoo.de:
to the gem object. My understanding is that you can have as many gem objects in a patch and each with different FPS. So for instance, frame 20 will give you 20 fps on that gem tree.
You mean the [gemhead] object ? The message is [frame 15<, for instance ?
yes, you're right. but if I'm not totally mistaken, there is no way to reduce the resolution of the frames delivered by pix_video on linux - so you just have to live with the high cpu usage caused by pix_video (or, for that matter, libdv - cannot check right now) in conjunction with ieee1394 hardware at "normal" frame rates.
Does this mean I should use the best quality possible ? (namely 5)
Hi all, I use [colorspace YUV< and [pix_rgba] with [pix_video] on Ubuntu LInux Intel/Nvidia using a ieee1394 camera and the colors are ok. They were not when I tried to use RGB out-of-the-box.
I think that this is because Ubuntu uses newer version of ieee driver.
You mean the [gemhead] object ? The message is [frame 15<, for instance ?
Yes.
yes, you're right. but if I'm not totally mistaken, there is no way to reduce the resolution of the frames delivered by pix_video on linux - so you just have to live with the high cpu usage caused by pix_video (or, for that matter, libdv - cannot check right now) in conjunction with ieee1394 hardware at "normal" frame rates.
Does this mean I should use the best quality possible ? (namely 5)
I think in Linux that is the only option. Other selections simply return message "option not supported on this OS."
Best wishes,
Ico
Hi all,
2007/3/21, Ivica Ico Bukvic ico.bukvic@gmail.com:
yes, you're right. but if I'm not totally mistaken, there is no way to reduce the resolution of the frames delivered by pix_video on linux - so you just have to live with the high cpu usage caused by pix_video (or, for that matter, libdv - cannot check right now) in conjunction with ieee1394 hardware at "normal" frame rates.
Does this mean I should use the best quality possible ? (namely 5)
I think in Linux that is the only option. Other selections simply return message "option not supported on this OS."
Actually, no : here I can select 1, 2, 3, 4 or 5. 1 has a very low pixel resolution. 2 and 4 are greyscales images. 2 and 3 have a decent resolution. 4 and 5 have the best resolution. (but 4 being greyscale as I wrote before)
Actually, no : here I can select 1, 2, 3, 4 or 5. 1 has a very low pixel resolution. 2 and 4 are greyscales images. 2 and 3 have a decent resolution. 4 and 5 have the best resolution. (but 4 being greyscale as I wrote before)
I guess then this is device-specific feature. ADVC-100 only allows full-blown NTSC/PAL format...
Ico
hi there,
Actually, no : here I can select 1, 2, 3, 4 or 5.
1 has a very low
pixel resolution. 2 and 4 are greyscales images. 2
and 3 have a decent
resolution. 4 and 5 have the best resolution. (but
4 being greyscale
as I wrote before)
same thing here ...
I guess then this is device-specific feature. ADVC-100 only allows full-blown NTSC/PAL format...
the bad thing is that that cpu usage won't drop when using smaller resolutions and/or the greyscale ones. iirc, the resolution actually stays the same, only the quality of the pixes gets worser.
with kind regards, thoralf.
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Alexandre Quessy -
Ivica Ico Bukvic -
Thoralf Schulze