[MPlayer-users] Distributed Processing

Kichigai Mentat kichigai at comcast.net
Fri May 6 22:32:01 CEST 2005


On May 6, 2005, at 15.30, Reimar Döffinger wrote:

> Hi,
> On Fri, May 06, 2005 at 03:06:50PM -0500, Kichigai Mentat wrote:
>
>> On May 6, 2005, at 10.33, Rich Felker wrote:
>>
>>> Still splitting it across different machines will make it slow as
>>> hell.
>>>
>> Do you mean that due to the process of forcing lavc to parallelize
>> over multiple machines, it will be as slow as hell, or that in
>> theory, parallelizing a mencoder job period would be slow as hell?
>>
>
> Well, there is lots of data to shuffle around, so you would at least
> need an extremely fast network - since I doubt that you have something
> like Myrinet or infiniband lying around I'd say there are more  
> effective
> ways of speeding things up.
> Well, you might be able to encode files in parts (first PC first hour,
> second PC second hour) and then create one big file out of them, but
> that sure is non-trivial and might have not-so nice side-effects (not
> exactly fitting together, A-V desync etc.
Actually, I was thinking about that, in a way. Less of chopping the  
video up, time segment by time segment, but dividing the entire  
process up, task by task. One machine do video decompression and  
resizing, one do audio processing, one do deinterlacing and re- 
encoding, or something like that.
>
> Greetings,
> Reimar Döffinger
>
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