[CinCV TNG] Benchmarking different versions of Cinelerra?

Andrew Randrianasulu randrianasulu at gmail.com
Thu Jul 20 15:17:18 CEST 2017

sorry for top post..

I also was wrong in my assumption/guess about how Cinelerra's renderfarm mode 
worked. It seems it was (is?) based on telling each instance of Cinelerra on 
local net to take/read same source file via NFS/Samba, decode/render/encode 
part of it, send encoded result back to same machine where source and master 
instance was running. So, more for batch-processing, and not frame, but range 
based ....


(from around 2006, found via old Mail list archive)

В сообщении от Thursday 20 July 2017 13:08:22 Einar Rc3bcnkaru написал(а):
> On 07/19/2017 10:01 PM, Andrew Randrianasulu wrote:
> > well, only working for  me partial decode acceleration looks OK. There
> > are well-known artefacts for nouveau/vdpau/mpeg2 combination - but they
> > simply software bugs. Sadly, writing firmware for those  video decoding
> > coprocessors is even bigger task than 'just' reverse-engeneer rendrering
> > part of GPU. AMD run proprietary video decoding firmware, and nouveau so
> > far relies on extracted binary firmware for  this hardware decoding (ok,
> > my card has TWO video decoders, one is fixed-function mpeg2 decoder, and
> > this run w/o host-uploaded firmware, and near it you have again,
> > combination of TWO dirrerent coprocessors, one running bitstream
> > processing, and other doing
> > massively-parallel run on partially-decoded image. For some yet to
> > discovered reason bitstream processor hang at, hm, decoding h264
> > bitstream, with nouveau..) So, while in theory quality can be improved
> > due to programmable nature of those co-processors - none was able to
> > demonstrate this yet.
> There is a lot software related to hw-decodeing: firmware, drivers,
> library, application. All they may contain bugs. If it is in firmware,
> it is very hard to fix outside the developers. Firmware is a program
> which runs on unknown computer. Fix it can only people who know what the
> computer looks like from the programmers point of view.
> Create a new or reverse-engineer an existing firmware is very hard if
> you dont know nothing about the hardware. So we have to rely on
> propertary firmware.
> Einar
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