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[DEVS ONLY] Nexus 4 camera recording v0.2 (AVC high profile & LEVEL 4) (60FPS)

OP Shaky156

21st February 2013, 07:47 PM   |  #21  
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Question
Question....

In doing research on the differences between AVC medium and high profiles, it appears that HP is preferred because of higher bitrates (max 25 vs 20), better compression ratios and better algorithms (i.e. stuff don't understand like 88 vs. 44 transform adaptivity and Quantization scaling matrices).

Having little experience in comparing MP and HP my question is should we expect a significant increase in video quality by switching to HP on the N4?
21st February 2013, 07:58 PM   |  #22  
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Re: Nexus 4 camera recording(AVC high profile & LEVEL 4) (kernel)
Use this media profile
http://db.tt/gmKTXiqQ

Should be accessible just copy it over anndddd give it a test
Ive done some more work so there may be an update sometime...

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21st February 2013, 08:00 PM   |  #23  
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Re: Nexus 4 camera recording(AVC high profile & LEVEL 4) (kernel)
Quote:
Originally Posted by AdamUpNorth

Question....

In doing research on the differences between AVC medium and high profiles, it appears that HP is preferred because of higher bitrates (max 25 vs 20), better compression ratios and better algorithms (i.e. stuff don't understand like 88 vs. 44 transform adaptivity and Quantization scaling matrices).

Having little experience in comparing MP and HP my question is should we expect a significant increase in video quality by switching to HP on the N4?

It will make a difference noticeable to the eye

Sent from my Nexus 4 using Tapatalk 2
22nd February 2013, 12:08 AM   |  #24  
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Re: Nexus 4 camera recording(AVC high profile & LEVEL 4 achieved!) (60FPS tests)
Is it possible to improve picture quality on the camera? I'm not very happy with mine.

Transmission sent from my badass Nexus 4.
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22nd February 2013, 12:47 AM   |  #25  
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Any chances, we get in touch with the source?
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22nd February 2013, 05:39 AM   |  #26  
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Re: Nexus 4 camera recording(AVC high profile & LEVEL 4 achieved!) (60FPS tests)
And can instant HDR pictures be achieved anytime soon?

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22nd February 2013, 05:50 AM   |  #27  
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Re: Nexus 4 camera recording(AVC high profile & LEVEL 4 achieved!) (60FPS tests)
60 fps no way

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22nd February 2013, 05:57 AM   |  #28  
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Re: Nexus 4 camera recording(AVC high profile & LEVEL 4 achieved!) (60FPS tests)
Quote:
Originally Posted by AdamUpNorth

Question....

In doing research on the differences between AVC medium and high profiles, it appears that HP is preferred because of higher bitrates (max 25 vs 20), better compression ratios and better algorithms (i.e. stuff don't understand like 88 vs. 44 transform adaptivity and Quantization scaling matrices).

Having little experience in comparing MP and HP my question is should we expect a significant increase in video quality by switching to HP on the N4?

Not sure about some of it but I can tell you that the higher bit rate helps with limiting the grainy video you see at times. 25Mbps is really about all you need at 1080p, any higher only makes for large files but no better quality.

60fps? Negative. Honestly we can all get into a long debate over it but I'll save you the trouble - its dumb. No need for it in video. This isn't a high action game. Even the cinema standard is 24fps. Besides our hardware caps at 30. Just like most other phones. Drop to 30 again - the software drops frames anyway so you'd need to record Bruce Lee fighting to test and see if we can hit 60fps at all.

The source would be great since the media encoding is embedded in the kernel it seems. Not in the .apk like the "old" days. Maybe see if we can get the audio sampling up to 192 or 320, instead of the lackluster 96 (seriously Google, wtf...)

Lastly, there should be options for the FFC. What can we for for that?

Sent from my Nexus 4 using xda app-developers app
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22nd February 2013, 06:35 AM   |  #29  
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Quote:
Originally Posted by KCRic

Not sure about some of it but I can tell you that the higher bit rate helps with limiting the grainy video you see at times. 25Mbps is really about all you need at 1080p, any higher only makes for large files but no better quality.

60fps? Negative. Honestly we can all get into a long debate over it but I'll save you the trouble - its dumb. No need for it in video. This isn't a high action game. Even the cinema standard is 24fps. Besides our hardware caps at 30. Just like most other phones. Drop to 30 again - the software drops frames anyway so you'd need to record Bruce Lee fighting to test and see if we can hit 60fps at all.

The source would be great since the media encoding is embedded in the kernel it seems. Not in the .apk like the "old" days. Maybe see if we can get the audio sampling up to 192 or 320, instead of the lackluster 96 (seriously Google, wtf...)

Lastly, there should be options for the FFC. What can we for for that?

Sent from my Nexus 4 using xda app-developers app

60fps is a matter of opinion. Personally I deinterlace all my 30i media to 60p, and it looks great. 24fps (or rather, 23.976fps) in cinema is just a matter of tradition, rather than any technical superiority. We might see this trend changing soon with The Hobbit being recorded at 48fps.

Anyway, the Padfone 2 with the same APQ8064 is capable of 720p at 60fps, so unless the hardware limitation you are talking about is with the camera module, the hardware encoder in the APQ8064 should be capable of 720p 60fps recording.
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22nd February 2013, 06:53 AM   |  #30  
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Re: Nexus 4 camera recording(AVC high profile & LEVEL 4 achieved!) (60FPS tests)
Agreed^^

60fps works be very handy on a phone.. since I'm not recording a feature length film lol

Sports, action, tons of stuff could benefit.

Hell 60fps slow motion would be bad ass!

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