Downgrade VLC

macOS specific usage questions
Pacoramique
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Downgrade VLC

Postby Pacoramique » 09 May 2022 19:14

Hi,

Since last update 3.0.17.3 under OSX 10.13.6 with Nvidia GTX980ti, even with hardware decoding preference, VLC doesn't discharge anymore 4k decoding to GPU.

I'd like to perform tests with previous VLC versions.

Do you have any page on www.videolan.com to download old VLC releases ?

Regards,

elitedata
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Re: Downgrade VLC

Postby elitedata » 09 May 2022 23:25


fkuehne
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Re: Downgrade VLC

Postby fkuehne » 10 May 2022 07:58

This is an unexpected problem that you describe there. Can you provide a debug log for us?

You can find all versions of VLC ever released here: https://get.videolan.org/vlc/

Note that artifacts.v.o lists development versions only.
VideoLAN
Felix Paul Kühne
Medic. VLC developer for appleOS since before you were born.
Blog: https://www.feepk.net

elitedata
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Re: Downgrade VLC

Postby elitedata » 10 May 2022 18:32

Note that artifacts.v.o lists development versions only.
thanks for that.
i was unaware of https://get.videolan.org/vlc/

Pacoramique
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Re: Downgrade VLC

Postby Pacoramique » 11 May 2022 02:07

Thanks Fkuehne, I was lost with development artifacts.

Before talking about a VLC bug, I want to test some VLC releases with different OSXs, Mac models and various graphic cards.

I'll be back with informations.

fkuehne
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Re: Downgrade VLC

Postby fkuehne » 11 May 2022 08:53

Thanks, looking forward to that!
VideoLAN
Felix Paul Kühne
Medic. VLC developer for appleOS since before you were born.
Blog: https://www.feepk.net

Pacoramique
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Re: Downgrade VLC

Postby Pacoramique » 12 May 2022 00:03

So,
The issue comes from the Nvidia GTX 980ti that encode/decode AVC (H264) but cannot encode/decode HEVC(H265), at my all surpise ! HEVC is manage from GTX1050 and beyond.
Regardless OSX, VLC or MacPro version, VLC log report Component>Device doesn't support HEVC.
And Nvidia to confirm :
- https://developer.nvidia.com/video-enco ... matrix-new
- https://www.nvidia.com/en-us/geforce/fo ... encoder-a/
I must have mix together AVC and HEVC rushes in the same folder, and at the same time upgrading VLC.
No more troubles with VLC 3.0.17.3 on MacPro5,1 with OSX 12.1 and AMD Radeon Pro W5700.
Thanks for help.

fkuehne
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Posts: 7187
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VLC version: 0.4.6 - present
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Re: Downgrade VLC

Postby fkuehne » 12 May 2022 07:02

This is interesting. Thanks a lot for sharing the results of your investigation!
VideoLAN
Felix Paul Kühne
Medic. VLC developer for appleOS since before you were born.
Blog: https://www.feepk.net


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