[RESOLVED] Need help with hardware decoding

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JackReacher
Posts: 3
Joined: Sat Jun 15, 2019 3:29 pm

[RESOLVED] Need help with hardware decoding

Post by JackReacher »

Hi there

I hope you are well. I see you've recommended DGHDRtoSDR to another user. I'd like to use this tool. I have a reference nvidia GTX980 TI but it does not support HEVC when I tried to use DGindexNV as a source filter for avisynth. What source filter would you recommend as a good alternative? Am I unable to use DGHDRtoSDR if my card does not support hardware HEVC encoding/decoding?

Actually could you please help me with an avisynth script that'll allow me load an HDR HEVC file at full depth and then using DGHDRtoSDR to output 8bit frames to vdub2?

Thanks, I'd really appreciate it.
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admin
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Joined: Thu Sep 09, 2010 3:08 pm

Re: Need help with hardware decoding

Post by admin »

Maybe GTX 980 is limited to 8 bit. DGHDRtoSDR should work as it uses only CUDA.

Hey gonca? What other source filters could the OP use?
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Guest

Re: Need help with hardware decoding

Post by Guest »

The op says the codec is hevc, but doesn't mention the container, ie is it mkv m2ts or a playlist.
As far as 10 bit frame server plug ins in avisynth, apart from the DG products there are not many that can do 10 bit.
They use the hack for stacking
I assume that you are using avs+

Edit
Try latest ffms2
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JackReacher
Posts: 3
Joined: Sat Jun 15, 2019 3:29 pm

Re: Need help with hardware decoding

Post by JackReacher »

Yes I am using avisynth+ 64 bit. So which source filter would be the next best thing in terms of efficiency and how exactly would I set it up so that I get an 8bit toneamapped output for SDR displays? It is in an mkv container. Could you please share an avs script that would help, thanks!
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Re: Need help with hardware decoding

Post by Guest »

gonca wrote:
Sat Jun 15, 2019 4:55 pm
Try latest ffms2
Other than this you have to use the hack for stacking or interleaving high bit depth
loadplugin("your_source_filter")
loadplugin("dghdrtosdr.dll")
your_source_filter(file.xxx)
DGHDRtoSDR()
prefetch(pick_a_number)
By the way, this sample was derived from the one in the text file
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admin
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Re: Need help with hardware decoding

Post by admin »

Sounds like the OP is looking for the ffms2 invocation details. Maybe one of the other forums would be more appropriate for such questions. I don't use ffms2 so cannot help.
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Guest

Re: Need help with hardware decoding

Post by Guest »

I don't use it either, DGDecNV works just beautifully for me
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JackReacher
Posts: 3
Joined: Sat Jun 15, 2019 3:29 pm

Re: Need help with hardware decoding

Post by JackReacher »

It's okay, I think I'll just start working on 265 content when I get an upgrade. Thanks though, I appreciate it!
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