Nouillator
Posts: 8
Joined: Sat May 02, 2015 12:36 pm

Hardware acceleration

Sat May 02, 2015 12:49 pm

Hello!
I'm trying to setup a MTC synced video player with JACK and XJADEO on a raspberry pi B (RASPBIAN)!
But when i'm trying to playback the videofile (.dv / 720*576 / 25Mb.s-1), it's very slow, even the timecode from JACK run slow!
The Pi is able to playback this file, when I try to read it with an openelec center OS.
Is there a way to make it work? Is that a problem of xjadeo which is not hardware accelerated?

Sorry for my english, and thanks!

Nouillator
Posts: 8
Joined: Sat May 02, 2015 12:36 pm

Re: Hardware acceleration

Mon May 04, 2015 3:42 pm

up?

Magimedia
Posts: 33
Joined: Sun Feb 22, 2015 8:31 pm

Re: Hardware acceleration

Mon May 04, 2015 10:05 pm

Have you tried OMX Player? It sounds like that video player doesn't utilise the Pi hardware acceleration, but OMX Player does as I've watched Full HD footage direct from my camcorder's SD card smoothly.

ghans
Posts: 7882
Joined: Mon Dec 12, 2011 8:30 pm
Location: Germany

Re: Hardware acceleration

Tue May 05, 2015 5:37 am

OMXplayer does not support MTC.

OP is hosed. One can try rewriting xjadeo with included
Raspberry Pi HW acceleration if inclined , other than that there
is nothing that can be done.

ghans
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betruk
Posts: 36
Joined: Fri Apr 24, 2015 8:17 am

Re: Hardware acceleration

Tue May 05, 2015 6:28 am

Have you checked the playback on your computer yet? Maybe the issue is about the source video.

Nouillator
Posts: 8
Joined: Sat May 02, 2015 12:36 pm

Re: Hardware acceleration

Tue May 05, 2015 11:21 am

The dv file is ok, the only problem come from xjadeo wich isn't fully compatible with the pi. Is there another way to sync a video player with an external midi timecode?

drgeoff
Posts: 10676
Joined: Wed Jan 25, 2012 6:39 pm

Re: Hardware acceleration

Tue May 05, 2015 12:01 pm

DV is an intraframe compression algorithm. It is not an MPEG nor H. 26x algorithm. The RPi hardware acceleration does not support it, at least not with the currently released bundled or purchased codec licences.

DV is similar to Motion JPEG. I would have expected that RPi would be capable of a pure software decode.

drgeoff
Posts: 10676
Joined: Wed Jan 25, 2012 6:39 pm

Re: Hardware acceleration

Tue May 05, 2015 12:04 pm

Magimedia wrote:Have you tried OMX Player? It sounds like that video player doesn't utilise the Pi hardware acceleration, but OMX Player does as I've watched Full HD footage direct from my camcorder's SD card smoothly.
HD on your camcorder's SD card is not DV.

Nouillator
Posts: 8
Joined: Sat May 02, 2015 12:36 pm

Re: Hardware acceleration

Tue May 05, 2015 12:14 pm

For a frame accurate sync player, i thought that a codec without temporal dependency would be better, that's why i chose dv. Btw, with an h.264 compression, it doesn't work neither.

Nouillator
Posts: 8
Joined: Sat May 02, 2015 12:36 pm

Re: Hardware acceleration

Tue May 05, 2015 3:42 pm

Another option would be making omxplayer compatible with MTC or even OSC, but is it possible?

Nouillator
Posts: 8
Joined: Sat May 02, 2015 12:36 pm

Re: Hardware acceleration

Mon Jun 15, 2015 3:06 pm

Up?

User avatar
expandables
Posts: 654
Joined: Fri Jun 27, 2014 7:34 pm
Location: Neverland with Michael Jackson

Re: Hardware acceleration

Mon Jun 15, 2015 9:58 pm

Have you tried it in vlc?
By thinking like an engineer you can create a raspberry pi.
Michael Jackson enthusiast.
I got the PI model B, B+ and PI 2 model B.
When will I get the A? I don't know.

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