HW transcode on Rpi4 OpenMax and V4L2

[aptalca 71]

@@softworkz sorry, I should clarify, I tested v4l2 on the new kernel libreelec with emby so I can't confirm whether or not it's specific to emby because emby is all I tested it with.

 

With regards to mmal, here's a log, but it's from "the other app" 

EDIT: removed link to log

Edited April 27, 2020 by aptalca

[Luke 42077]

Can you provide one from ours? Thanks.

[softworkz 5066]

Can you provide one from ours? Thanks.

 

We don't have mmal included. The reason is that mmal is was only supported with a display context.

As can be seen here: https://trac.ffmpeg.org/wiki/HWAccelIntro

Look at the second table, column "Usable from ffmpeg CLI"

 

That doesn't seem to accurate anymore. We can look into adding mmal support in the future.

[heath600 4]

@@softworkz

Excited about the new possible decoding on the Pi4.  Tried the latest build and it seems to error trying to use the decoder

>>>>>> FindVideoDecoder - MediaType: h264, Mode: Custom
Info Checking: 'OpenMax H.264'
NoMatch Encoder is not compatible with 'None' decoders
Info Checking: 'Automatic software decoder'
Info Check successful - selecting 'Automatic software decoder'

Any chance of trying to get HEVC decoding working also?

[softworkz 5066]

Any chance of trying to get HEVC decoding working also?

 

I'm not sure, could you please post the hw detection log?

[heath600 4]

Hardware Log attached.

hardware_detection-63724521353.txt

Edited May 11, 2020 by heath600

[Luke 42077]

@heath600 how does it compare with Emby Server 4.4.3?

[heath600 4]

If I recall correctly I was on 4.4.3 and it wasn't working so I updated to a 4.5.x.x version to see if it would help.  Just tested on 4.5.0.15 and same issue.

[Luke 42077]

Ok thanks for the update.