Hardware acceleration on H3 for transcoding with Tvheadend or Ffmpeg. HELP need!

Hello community..

I strugling with hardware acceleration on Orange PI +2E.

I read all forums and used google..but all what I found are old threads.

I would like to know where can I find some tutorials how to install drivers for HW encoding in h264.

Compilation of ffmpeg is not a problem, I did it and tried to encode 720x576 mpeg2 live stream to h264 @ 1000kbps with fdk-aac, and it works but..all cores are around 70%, and it sometimes starting the buffering when I watching on for example on POT player or Vlc.

I would like to achive two thing:

1) to be able to use hw acceleration to encode h264 from mpeg2 stream.

2) to be able to use hw decoding 1080p which is mpeg2 and and encode it with hw acceleration to h264.

Is it posible to do this btw?

I'm installed the latest version of Ubuntu armbian:

Linux orangepiplus2e 5.4.43-sunxi #20.05.2 SMP Mon Jun 1 18:26:22 CEST 2020 armv7l armv7l armv7l GNU/Linux

Linux orangepiplus2e 5.4.43-sunxi #20.05.2 SMP Mon Jun 1 18:26:22 CEST 2020 armv7l armv7l armv7l GNU/Linux

I would be really greatful for any kind of tutoriaal..links explanation, how to do that.

Big thx!