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Arpa is offline Arpa
2011-12-08 , 12:11
Posts: 81 | Thanked: 44 times | Joined on Nov 2009 @ Switzerland
#121
Originally Posted by BigBadGuber! View Post
ust get an iphone. It works
I didn't know iPhone displays all possible videos out of the box either. Everything goes through iTunes or am I mistaken?

Also to an earlier message, N8 plays HD video from it's HDMI port so it's capable of displaying the "full" pixelcount of 720P movies without a sweat.
 
patlak is offline patlak
2011-12-08 , 12:55
Posts: 1,033 | Thanked: 1,013 times | Joined on Jan 2010
#122
Originally Posted by marxian View Post
I've had trouble with some FLV files (resolution lower than native display resolution) on both the N900 and the N950. I was genuinely surprised to find that the N9(50) would not play these. I expected an improvement over the capabilities of the N900. Epic fail.
That's the only issue I've had as well. However, with an overclocked DSP it plays much more of those previously unplayable flvs.
 

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ste-phan is offline ste-phan
2011-12-08 , 13:52
Posts: 1,195 | Thanked: 2,708 times | Joined on Jan 2010 @ Hanoi
#123
Originally Posted by patlak View Post
My N900 plays anything non-HD that I've thrown at it. How's the N9 any different? Doesn't it have the same codecs as the N900? Btw, ppi on the N9 is much higher compared to the well praised SA+ on the GS2. It's really sharp, not N900 sharp, but it's close.
Actually I never tried the N900 for video's. So for all I know it could be very well the case that the N900 playback performance is as bad as the N9.

The N8 is more inviting for video's because it could HDMI stream to a TV, where the N900 TV out was a blurry mess.

and the N9 is tempting for video watching as well because of the nice built in display (for video).

The matured N900 should have the advantage of having support for more codecs, but does it play back anything smoothly, I guess you know the answer better.

N-Series non HD video playback performance:
2009 - 2010 - 2011
N900 < N8 <(?) N9
 
patlak is offline patlak
2011-12-08 , 14:11
Posts: 1,033 | Thanked: 1,013 times | Joined on Jan 2010
#124
Originally Posted by ste-phan View Post
Actually I never tried the N900 for video's. So for all I know it could be very well the case that the N900 playback performance is as bad as the N9.
Originally Posted by patlak
My N900 plays anything non-HD that I've thrown at it.
WTF???
 

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ste-phan is offline ste-phan
2011-12-08 , 14:20
Posts: 1,195 | Thanked: 2,708 times | Joined on Jan 2010 @ Hanoi
#125
Originally Posted by patlak View Post
Btw, ppi on the N9 is much higher compared to the well praised SA+ on the GS2. It's really sharp, not N900 sharp, but it's close.
That is the theory.
Not that it matters much for video, and this is off topic but the N9 has 2 disadvantages: lower PPI of about 251 vs (267 for the N900) and of course the Pentile matrix display tech creating an unsharp image.

So basically the GS2 (218PPI) may still be more pleasing to they eye due to lack of Pentile technology.

The new 720p Android 4.0 showcase Nexus phone also features the dreaded Pentile matrix display technology but reportedly the PPI of about 315 count is high enough to compensate for the Pentile unsharpness.
Will it play the HD content the screen can natively display? Probably a few of the MKV Container formats.
 
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Copernicus is offline Copernicus
2011-12-08 , 15:06
Posts: 1,986 | Thanked: 7,698 times | Joined on Dec 2010 @ Dayton, Ohio
#126
Originally Posted by ste-phan View Post
The new 720p Android 4.0 showcase Nexus phone also features the dreaded Pentile matrix display technology but reportedly the PPI of about 315 count is high enough to compensate for the Pentile unsharpness.
Will it play the HD content the screen can natively display?
If you're interested, the new HTC Rezound has a 720p display at 342 ppi, and it uses a classic RGB layout (i.e., no pentile). There is a good review showing off a close-up of this display against an older pentile display at The Verge.

And yes, it plays HD video up to 1080p, as most of the current crop of high-end smartphones do, and 720p video is rendered natively.

Originally Posted by ste-phan View Post
Probably a few of the MKV Container formats.
Just a note: MKV is a container format, not a collection of formats. A Matroska file can contain one or more video tracks encoded in any sort of codec (along with multiple audio and subtitle tracks). Normally, the reason why one MKV-contained video will run on a device and another will not is due to the video's codec, not because of the container's format.
 

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Crogge is offline Crogge
2011-12-11 , 05:57
Posts: 543 | Thanked: 151 times | Joined on Feb 2010 @ Germany
#127
Originally Posted by ste-phan View Post
Actually I never tried the N900 for video's. So for all I know it could be very well the case that the N900 playback performance is as bad as the N9.

...
Well the N900 is able to play true HD movies smooth with a few modifications, the topic here says that the N9 isn't able to do that.

I don't understand that though, the N900 has the same GPU and a similar CPU performance (Overlocked) so shouldn't be both phones able to play videos in a similar speed?

For example my Lenovo A1 tablet is using a OMAP 3622 CPU (Cortex-A8, 1GHz) with a PowerVR SGX 530 GPU which is also a pretty similar hardware configuration. 720P videos play with higher bitrates very smooth on the A1, better than on the N900 for some reason.
 
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Copernicus is offline Copernicus
2011-12-11 , 11:48
Posts: 1,986 | Thanked: 7,698 times | Joined on Dec 2010 @ Dayton, Ohio
#128
Originally Posted by Crogge View Post
Well the N900 is able to play true HD movies smooth with a few modifications, the topic here says that the N9 isn't able to do that.

I don't understand that though, the N900 has the same GPU and a similar CPU performance (Overlocked) so shouldn't be both phones able to play videos in a similar speed?
Yeah, a few modifications... all you need to do is (a) rip out the existing OS Kernel and replace it (with kernel-power), (b) overclock both the CPU and the DSP chip, and (c) install a set of graphics libraries ripped off of the N9. Granted, these things are technically easy to accomplish, but they would probably make ordinary users cringe and certainly won't make Nokia happy...

Presumably, the N9 (just like the stock N900) has been optimized for use as a phone, which means attempting to maximize battery life and provide a decent lifespan for the handset, rather than driving the poor thing to its limits.

I would imagine the N9 will be able to show off a lot more power than the N900, when/if the overclockers finally start pushing it. The N9's OMAP is designed on a 45nm scale, while the N900s is on a 65nm one, so it should be able to run quite hard.

Originally Posted by Crogge View Post
For example my Lenovo A1 tablet is using a OMAP 3622 CPU (Cortex-A8, 1GHz) with a PowerVR SGX 530 GPU which is also a pretty similar hardware configuration. 720P videos play with higher bitrates very smooth on the A1, better than on the N900 for some reason.
I think you've kinda answered your own question. The N900 has a 600 MHz OMAP 3430, the A1 has a 1 GHz OMAP 3622. When you overclock the 3430 up towards 1 GHz, you naturally start getting video framerates comparable to the 3622.
 
snowparang is offline snowparang
2011-12-11 , 17:28
Posts: 40 | Thanked: 12 times | Joined on Dec 2011
#129
As promised, here's a list showing the difference between the 720p movie recorded by both the N8 and N9. Info is extracted via Media Player Classic - Home Cinema

I've also attached the full data in txt format.

Essentially: h.264 vs h.263?

N9 (P.R. 1.0)
Overall bit rate mode : Variable
Overall bit rate : 8 204 Kbps
Format : MPEG-4 Visual
Format profile : Simple@L6
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : 20
Duration : 34s 150ms
Bit rate : 8 067 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Stream size : 32.8 MiB (98%)
Language : English


N8 (before camera update, 25 fps)
Overall bit rate mode : Constant
Overall bit rate : 12.1 Mbps
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.1
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=25
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 9mn 57s
Bit rate mode : Constant
Bit rate : 12.0 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 24.964 fps
Minimum frame rate : 6.543 fps
Maximum frame rate : 25.021 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.522
Stream size : 854 MiB (99%)

N8 (after camera update, 30 fps)
Overall bit rate mode : Constant
Overall bit rate : 12.1 Mbps
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.1
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 2mn 18s
Bit rate mode : Constant
Bit rate : 12.0 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 30.000 fps
Original frame rate : 15.000 fps
Minimum frame rate : 29.970 fps
Maximum frame rate : 30.030 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.434
Stream size : 198 MiB (99%)
Attached Files
File Type: txt N9 - pr1.0.txt (4.4 KB, 75 views)
File Type: txt N8 - before camera update 25 fps.txt (4.7 KB, 73 views)
File Type: txt N8 - after camera update 30 fps.txt (4.9 KB, 78 views)
 
patlak is offline patlak
2011-12-11 , 17:36
Posts: 1,033 | Thanked: 1,013 times | Joined on Jan 2010
#130
Originally Posted by Copernicus View Post
I think you've kinda answered your own question. The N900 has a 600 MHz OMAP 3430, the A1 has a 1 GHz OMAP 3622. When you overclock the 3430 up towards 1 GHz, you naturally start getting video framerates comparable to the 3622.
CPU clock has no play in video processing. DSP is doing all the work.
 
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