VC-1 format

Plex Media Server
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Server Version#:Windows 11 Pro beta
Player Version#: Google Streaming 4K
Intel hardware has generally removed hardware support for the VC-1 format, specifically for decoding with Intel Quick Sync Video (QSV).

While older Intel hardware (4th gen/Haswell and earlier) might have had some level of support, current and newer generations (such as Intel Arc GPUs and Meteor Lake CPUs) do not support VC-1 hardware acceleration for decoding or encoding.

Implications

  • Software Decoding: Applications like Plex, will automatically fall back to using the CPU (software decoding) to handle VC-1 streams if QSV hardware support

Is Plex able to know this and use my Nvidia Quadro P4000 card also in my server with Intel 17-12700 ?

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Configure Settings > Transcoder > Hardware transcoding device to use the desired device for hardware accelerated transcoding. Auto uses the default GPU for the system (many times configured in system BIOS/UEFI).

If the selected hardware transcoding device is unable to decode VC-1 video, then Plex Media Server will fall back to software decoding.

Alder Lake (12th gen) CPUs supports decoding VC-1 video using Quick Sync graphics.

A Nvidia Quadro P4000 supports decoding VC-1 video.

If Plex were to fallback to software decoding, an i7-12700 is more than capable of decoding 1080p VC-1 video.


References:

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Thank You!