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-   Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)
-   -   N900 Video Recording - Questions/Concerns (https://talk.maemo.org/showthread.php?t=35071)

Stevebratt 2009-12-26 17:57

Re: N900 Video Recording - Questions/Concerns
 
i personally find the video and photo capabilities of my n900 more than acceptable for what i want to do with it, ive now actually started using my phone as a digital camera. before with my older phones it never seemed worth it, it was better just to take the digicam with me and use that, now i find id rather use the n900 so i dont have to fill my pockets with extra gadgets. ill see if i can get osme images and video uploaded for you to look at

woodyear99 2009-12-26 19:25

Re: N900 Video Recording - Questions/Concerns
 
Quote:

Originally Posted by Stevebratt (Post 442246)
i personally find the video and photo capabilities of my n900 more than acceptable for what i want to do with it, ive now actually started using my phone as a digital camera. before with my older phones it never seemed worth it, it was better just to take the digicam with me and use that, now i find id rather use the n900 so i dont have to fill my pockets with extra gadgets. ill see if i can get osme images and video uploaded for you to look at



I agree with this. The camera is acceptable, just wish the video would not drop frames. I would say every minute or so it would drop a second or so of video.

Revampion Rv+' 2009-12-26 20:00

Re: N900 Video Recording - Questions/Concerns
 
Has anyone actually managed to get the camera recording at 25fps, or anywhere relatively near?

My videos frequently drop frames but the quality is still good but they're still far from 25fps. (I'll post a youtube link in a sec)

Also, Cyberlink Powerdirector shows my videos as having ridiculously low frame rates (I'm talking 6 and under!) and they also play at this rate aswell.

Anyone else found this when you view details of clips on your computer?

torpedo48 2009-12-26 20:20

Re: N900 Video Recording - Questions/Concerns
 
Quote:

Originally Posted by woodyear99 (Post 441883)
Took some video today experience some frames dropping. Is there anything I can do to reduce dropping frames? Do you think later firmwares will fix this or is it hardware?

I don't think this is hardware, I'm sure that it will be fixed in future firmwares.

slender 2010-01-01 23:57

Re: N900 Video Recording - Questions/Concerns
 
http://web.me.com/jamesburland/Nokia...Shootout!.html

Little things like this matter a lot. Letīs hope firmware updates to this one also.

James Burland 2010-01-02 17:54

Re: N900 Video Recording - Questions/Concerns
 
I would go so far as to call the video quality of the Nokia N900 as 'poor'. It's not just the frame rate that is so disappointing, but the quality of the compression is very shoddy.

If the N93 (released in the middle of 2006!) had video of this standard it would be returned in droves. Fortunately for Nokia the N900 seems to have been given some kind of immunity due to its 'work in progress' status.

It's a risky strategy on Nokia's part. It's not as if people have been heaping praise on their flagship devices of late. The N96, N97 and now the N900 all have very serious problems.

mikec 2010-01-03 13:30

Re: N900 Video Recording - Questions/Concerns
 
On the subjecgt of frame drops.

Interesting. Just looked at TOP while recording a video. CPU only at 42% so it's not CPU bound. dominated by camera-ui, then omap3camd, then pulseaudio.

OMAP 3530 should handle full 720P at upto 30fps.
Maybe issue is the write speed of the EMMC. Has anyone tried recording to a high speed micro SD card?

Also noticed that there is an Infrared LED that comes on between the two flash LED's while recording video. This presumably is for autofocus, yet the video Camera has fixed focus.

James Burland 2010-01-03 14:17

Re: N900 Video Recording - Questions/Concerns
 
Quote:

Originally Posted by mikec (Post 451116)
On the subjecgt of frame drops.

OMAP 3530 should handle full 720P at upto 30fps.
Maybe issue is the write speed of the EMMC. Has anyone tried recording to a high speed micro SD card?.

Just tried it. Got the same result. Good idea though, certainly worth trying.

anapospastos 2010-01-03 14:21

Re: N900 Video Recording - Questions/Concerns
 
Furthermore, there isn' t the possibility to pause and continue video recording like ericsson mobiles. In my opinion it's very useful.

andree 2010-01-03 15:36

Re: N900 Video Recording - Questions/Concerns
 
Quote:

Originally Posted by mikec (Post 451116)
On the subjecgt of frame drops.

Interesting. Just looked at TOP while recording a video. CPU only at 42% so it's not CPU bound. dominated by camera-ui, then omap3camd, then pulseaudio.

ISP (c64x) is (I think) used for encoding, that's why you don't see so big cpu usage...

Quote:

Originally Posted by mikec (Post 451116)
OMAP 3530 should handle full 720P at upto 30fps.
Maybe issue is the write speed of the EMMC. Has anyone tried recording to a high speed micro SD card?

the eMMC access time most probably isn't the problem - using usb transfer, I am able to fill it with speed ~10MiB/s... I can't believe the chipset could be able to encode 1280x720@30fps video realtime...


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