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-   -   Onboard Video Conversion for n900 (No PC needed)? (https://talk.maemo.org/showthread.php?t=55597)

woody14619 2010-06-08 23:58

Re: Onboard Video Conversion for n900 (No PC needed)?
 
I've used ffmpeg on an older/slower system like this (500Mhz range), and can tell you that a typical 90 minute movie took well over 2 days to transcode even on an optimized P4. So even accelerated, you'd still be over a day to encode a movie on the N900. It may be quicker if you're not doing video encoding (eg just changing the audio format), but it's pretty intensive even for just that.

Radicalz38 2010-06-09 00:17

Re: Onboard Video Conversion for n900 (No PC needed)?
 
you guys serious with this? I have a video converter on pc but using it pushes my core 2 duo from 1 to 5% to 100% usage. What made you think an arm processor with 600mhz could convert a video if a intel dual core processor with 2 2.13ghz and l2 cache is at its limit?

pantera1989 2010-06-09 00:27

Re: Onboard Video Conversion for n900 (No PC needed)?
 
Quote:

Originally Posted by Radicalz38 (Post 706404)
you guys serious with this? I have a video converter on pc but using it pushes my core 2 duo from 1 to 5% to 100% usage. What made you think an arm processor with 600mhz could convert a video if a intel dual core processor with 2 2.13ghz and l2 cache is at its limit?

Of course it could. The core2duo is pushed at its limit for speed. Where a video takes 15 mins to be converted with a core2duo, it would take the N900 hours, using 100% CPU usage and making the phone unusable during that time.

So video conversion is possible. Any CPU can handle it. It's just a process. So possible: Yes; Practical: Hardly

Radicalz38 2010-06-09 02:47

Re: Onboard Video Conversion for n900 (No PC needed)?
 
Quote:

Originally Posted by pantera1989 (Post 706415)
Of course it could. The core2duo is pushed at its limit for speed. Where a video takes 15 mins to be converted with a core2duo, it would take the N900 hours, using 100% CPU usage and making the phone unusable during that time.

So video conversion is possible. Any CPU can handle it. It's just a process. So possible: Yes; Practical: Hardly

If that's the case it really isn't possible for hours of processing to that extent battery drainage(Charger can't supply that much power if processor usage is at 100% even if charger is connected while charging it would still eventually drain out), hardware burn out(Overheating) & software hang up would occur resulting in failure of conversion after. So generally speaking it's 100% impossible.

Venemo 2010-06-09 07:32

Re: Onboard Video Conversion for n900 (No PC needed)?
 
It is very nice to see you guys actually realizing what I said on the previous page. :)

pantera1989 2010-06-09 07:35

Re: Onboard Video Conversion for n900 (No PC needed)?
 
Quote:

Originally Posted by Venemo (Post 706707)
It is very nice to see you guys actually realizing what I said on the previous page. :)

Oh sorry. I didn't realize you already posted it. I almost never read a whole thread. First posts and last posts usually.


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