Blocking Issues With CUDA

Discussing about advanced video encoding techniques including GPU encoding, distributive encoding and segmental encoding. Topics are not limited to MediaCoder.
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TheProfosist
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Blocking Issues With CUDA

Post by TheProfosist » Mon Oct 19, 2009 3:20 pm

When i use CUDA at full bitrate for the file everything is good but when i compress to 1500kbps i get a ton of blocking. more blocking that i used to get with 780kbps DivX(actual DivX not h.264 DivX). Is there a reason for this is there a way to fix it? I would like to get this ironed out so that i have no future problems.

Thanks in advance for your help

stanley
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Re: Blocking Issues With CUDA

Post by stanley » Mon Oct 19, 2009 11:29 pm

Actually CUDA H.264 encoding is more suitable for high-bitrate H.264 encoding.
When things work together, things work.

TheProfosist
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Re: Blocking Issues With CUDA

Post by TheProfosist » Tue Oct 20, 2009 4:06 am

ahh ok? that still doesnt explaim why i get large ammounts of blocking when compressing down to 1500kbps

moruk
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Re: Blocking Issues With CUDA

Post by moruk » Wed Oct 21, 2009 3:31 am

I concerne stanley.
I'm not using cuda, but i tried ATI's video encoder. Both encoder works fine with high-bitrate encoding but mencoder or ffmpeg is better for low-bitrate encoding.

TheProfosist
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Re: Blocking Issues With CUDA

Post by TheProfosist » Wed Oct 21, 2009 1:16 pm

the main reason why i choose to do h.264 is because of CUDA/gpu decoding/encoding. I use the CUDA encoder because of the speed increase otherwise i would not be useing it so i want to know how i can fix the blocking issue. because before when i used 780kbps divx i didnt get as much blocking as i do with cuda at 1500kbps . also im getting tons of artifacts where a scene goes to black someartifacts of color will be left. heres a link to the encode that im currently getting the problems in: http://cid-fe38932929153624.skydrive.li ... erSec?uc=1

TheProfosist
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Re: Blocking Issues With CUDA

Post by TheProfosist » Sun Oct 25, 2009 1:13 pm

there are smaller 5 min clips available there now also please look at them and try to help me thanks

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