Hardware acceleration activated results in buffering

[themajm 0]

Hi there.

 

So I have some .mkv which seem to have not supported subtitles in it, that's why emby is transcoding and can't direct play. Anyway, this is my issue:

 

transcoding acceleration activated:

H.264 (AVC) VAAPI -> H.264 (AVC) VAAPI
Reason for transcoding:
Subtitle format not supported

Qnap CPU around 30%

Lagging, not possible to watch.

 

 

transcoding acceleration deactivated:

h264 software -> h.264 (AVC) software
Reason for transcoding:
Subtitle format not supported

Qnap CPU from 60 to 91%

no lagg. works fine.
 

 

So, what should I do now? I would really like to have acceleration activated because it seems to save my CPU (and I pay you money for it...) but when I activate it, some files can't be played with no lagg. I don't like to go and change the settings everytime. What can I do about this issue?
 

 

Kind regards

 

 

Edit: I'm on Version 4.0.0.2

Edited January 20, 2019 by themajm

[Luke 42077]

@@themajm

 

Hi there, can you please attach some ffmpeg log examples? Thanks !

[themajm 0]

@@Luke

 

Hi and thanks. Can you move this topic into Synology NAS? I was confused yesterday - I have a DS918+ obviously Synology!

 

So, I have three logs for you, from the time I tested it yesterday while writing this post. Thanks! Looking forward to hear from you again :-)

 

peace!

1.txt

2.txt

3.txt

Edited January 21, 2019 by themajm

[Luke 42077]

Hi there, I believe this is not related to hardware acceleration, but rather due to the need to burn in PGS subtitles. This is a very expensive process. Can you try turning the subtitles off? That will help it perform better. Thanks !