[winswitch] Fedora33 xpra h264 encoding support not working

Michael Cronenworth mike at cchtml.com
Wed May 26 14:30:12 BST 2021

On 5/26/21 8:17 AM, Terry Barnaby via shifter-users wrote:
> As a slight aside to this. My "dnf install xpra" from the Fedora33 repositories + 
> rpmfusion + fedora-cisco-openh264 repositories does in fact have h264 and h265 
> support. So I presume the Fedora33 standard ffmpeg is being extended to support 
> h264 by "plugin" h264 packages from those external repos. I'm not sure it supports 
> hardware vaapi h264/h265 though.

No. FFMpeg does not support plugins.

Installing 'xpra' will only install the Fedora package. Fedora packages cannot 
require an external package such as from RPMFusion (xpra-codecs-freeworld). You 
installed this yourself.

> Actually I see that the Fedora33 xpra is using xpra-codecs-freeworld from rpmfusion.

Correct. It is possible to ship packages in RPMFusion that could either replace or 
extend software that requires patent encumbered software. The 
'xpra-codecs-freeworld' package allows linking with ffmpeg and extending xpra 
support. Anyone could correct Fedora packaging to match upstream's (Antoine's) 
standards. Fedora is not a closed ecosystem. Many upstream maintainers publish their 
own packages directly in Fedora.

> I presume with those hardware codecs the license is with the hardware ? 


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