VC-1 fails to transcode using Intel A380 w/ QSV

[Big_Sexy 0]

Hey,

Hopefully someone can help me out with this, I'm running Emby 4.8.8.0 in docker on Ubuntu Server 24.04 with an Intel A380 for hardware transcoding. For some reason I'm unable to hardware transcode VC-1 encoded files. If I disable VC-1 under the advanced tab on the transcoding menu, the file plays fine. Any ideas why the gpu is unable to transcode?

ffmpeg-transcode-869d1122-8369-492b-9051-053b158d75cb_1.txt

[Luke 42077]

HI, please attach the main emby server log as well. thanks.

[Big_Sexy 0]

Apologies, should be attached now. Thanks!

embyserver.txt

[handspiker2 6]

Intel Arc removed support for VC-1 from quicksync. It shouldn't be attempting to use the GPU for it.

https://www.intel.com/content/www/us/en/support/articles/000098345/graphics.html

https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video#Hardware_decoding_and_encoding

[Happy2Play 9780]

Interesting that Hardware detection is still picking it up then.

[softworkz 5066]

I wouldn't be so sure yet. Those documents are assuming the use of the oneVPL dispatcher, while we're still using the MediaSDK (mfx) dispatcher.

Now, on my Windows machine, VC-1 decoding is working fine via vc1_qsv and an Intel ARC 380 discrete GPU with task manager confirming that there's load on the 380 rather the integrated graphics.

Before drawing conclusions, let's equalize conditions...

@Big_Sexy- could you please download this test file and test whether transcoding works in this case? https://drive.google.com/file/d/0BwxFVkl63-lEcU1ScWZuMjhpOXM/view?usp=sharing&resourcekey=0-Kw7GSvWtpTG5WNFXvJXxNw

(Source: Kodi Samples Wiki)

Thanks!

[Luke 42077]

@Big_Sexyhas this helped?