N900 720p - Page 2 - maemo.org

sygys · #11 2010-10-08, 12:48

well i have read allot of these threads around here. i dont wanna know if you guys think it is possible, i wanna know who can try to make it possible?

When i first came up with the idea to make a psx emulator everyone answered me it wasnt possible, until someone tried and succeeded.

When i see specs of devices that capture 720p im sure as hell its possible with our ability to overclock. but im not a coder and dont know how to start. Every one is talking about compression and its to heavy on the n900. but cant the n900 make raw video's in 720p er maybe even 1080p and compress them afterward... hell i dont know how this works lol just trying to use my common sense here :P

And maybe the n900 cant play them. but its awsome to be able to put 720p videos made by the n900 on youtube

ossipena · #12 2010-10-08, 13:06

what I have read about the issue, the bottleneck probably is the bus between camera and cpu,gpu etc. wasn't it the same issue with n8x0s? hardware was capable for better video output but the bus was totally undersized for such functionality.

e: and ps.
raw video would be the easiest job for every component

maxximuscool · #13 2010-10-08, 13:14

Quote:

Originally Posted by Leon4

Yes but look at the CPU of the N8 it is a big fat bloody zero, talk about a ARM11 pfff, coman everyone knows that ARM8 is much better...

first of all N8 is symbian, symbian is multimedia OS so it makes sense that video is its main focus.

ARM11 has better benefit at some point because of its artchertecture.
ARMv7 A8 deal better with computing vectors just like a computer processor.

Though A8 is better than ARM11 on spec sheet but the one used in N900 isn't better at encoding video at 720p.

Maemo5 OS has limitation and swap memory doesn't help much. Symbian uses much less memory RAM and it was designed for that purpose. Sure both have the same RAM but doesn't mean it operate the same way. It's like comparing a Windows to a Mac.

GPU of the N8 is much capable of rendering images at two times the one on N900. The cpu may be weaker but GPU is the one that make N8 capable of taking 12pmx picture and rendering it that fast. and that GPU helped the N8 processing 720p at ease. Sony Satio has the same hardware as N900 and yet it doesn't even do HD and taking picture with it at full resolution tooks like 10seconds to processed the image.

N8 takes only a few seconds and ready to take more shots.

Os and GPU are the things you targeting. Having A8 won't make it capable if the OS is not allowing it.

sygys · #14 2010-10-08, 13:22

HTC desire didnt have it also until the 2.2 update from last month. Does the desire have better Hardware too?

maxximuscool · #15 2010-10-08, 13:24

Quote:

Originally Posted by sygys

well i have read allot of these threads around here. i dont wanna know if you guys think it is possible, i wanna know who can try to make it possible?

When i first came up with the idea to make a psx emulator everyone answered me it wasnt possible, until someone tried and succeeded.

When i see specs of devices that capture 720p im sure as hell its possible with our ability to overclock. but im not a coder and dont know how to start. Every one is talking about compression and its to heavy on the n900. but cant the n900 make raw video's in 720p er maybe even 1080p and compress them afterward... hell i dont know how this works lol just trying to use my common sense here :P

And maybe the n900 cant play them. but its awsome to be able to put 720p videos made by the n900 on youtube

what's the point of taking 720p? if the device OS can't even handle 720p play back? not to mention 1080p, if this was an easy things to do then it would have been considered. But driver for this component is closed source and most part of it is as well. FCam might be one day but it may not be a simple task to simple make it work. saying is easy but programming it is hard. I haven't been programming with C++ for years and got to tell you that it will not be easy. Otherwise Nokia would have done it already.

Currently N900 barely make it to 25fps, it keeps dropping to below 20 and stuttered at random. No to mention at 720p, it would be badly dropped frame rate. Let say Maximum frame rate is 15fps? and average 9? what good can a video at that frame rate do?

May be I'm wrong but I really hope I am.

maxximuscool · #16 2010-10-08, 13:28

Quote:

Originally Posted by sygys

HTC desire didnt have it also until the 2.2 update from last month. Does the desire have better Hardware too?

I believe it does.
Look at it yourself. I saw double in power.
http://www.gsmarena.com/htc_desire-3077.php

Camera may be the only thing the same. But everything else speaks for itself.

So don't compare N900 to a device that HD capable.

Reffyyyy · #17 2010-10-08, 13:40

Quote:

Originally Posted by maxximuscool

I believe it does.
Look at it yourself. I saw double in power.
http://www.gsmarena.com/htc_desire-3077.php

Camera may be the only thing the same. But everything else speaks for itself.

So don't compare N900 to a device that HD capable.

I read that the GPU on the N900 is better than the HTC Desire.

maxximuscool · #18 2010-10-08, 13:51

Quote:

Originally Posted by Reffyyyy

I read that the GPU on the N900 is better than the HTC Desire.

depending on what you meant by better. TI is better than Qualcomm yes. Snapdragon is still better than whatever OMAP3430. True, n900 can overclocking to the same spec but Mhz is not everything. The processor is not natively running at the Mhz level is not the same the processor running at native frequency. Otherwise why would they made OMAP35xx or OMAP36XX if overclocking cpu can hit the Mhz and give out the same performance?

True that A8 is better than Snapdragon because of the GPU built inside A8. But the one in N900 is underpower in term of achieving 720p at 30pfs like Desire.

Snapdragon doesn't have GPU on the dice. But android OS doesn't do multi tasking and CPU will be free to work on video processing not to mention 578MB RAM

Reffyyyy · #19 2010-10-08, 14:07

I know that processor speed isn't everything, that's why I didn't mention CPU.

The 3430 has a GPU that pushes 18.5M triangles and about 662M pixels per second @ 530MHz the specs on the current snapdragon chipset list 22M triangles and 133M pixels per second. (http://ubuntuforums.org/archive/inde...t-1398895.html)

Android does multitasking to a certain degree. Applications will remain in the background until the RAM allocated to the application is required. Apart from some badly coded applications, this will consume no CPU.

I believe that the N900 is capable but the Camera is closed source(?). I don't really have interest in video recording on my phone.

Also, does anyone know if the DSP could assist in any way?

mrsellout · #20 2010-10-08, 14:08

Quote:

Originally Posted by maxximuscool

what's the point of taking 720p? if the device OS can't even handle 720p play back?

When one makes recordings, the device used to take them isn't always the one used to play them back. If the device could take 720p recordings then it would be really useful to have the functionality.

If under a normal n900 setup the device can't capture the data quick enough, is the problem due to there being too many other processes running in the background? What I was wondering is could it be possible to dual boot with another installation of Maemo, Meego, Nitdroid or A.N. Other OS that has all other functionality stripped out with eg basic UI, no IM, SMS, maybe even no phone, so the device can just concentrate on recording; could the device then record at 720p? One could then reboot into that installation when required.