[Q] Increase 4k video bitrate for SONY z2

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Tony72000

Member
Jul 17, 2014
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Hello everyone,

I have recently been a SONY Z2 filming mainly 4K
Even if I find pretty good video (3840x2160 @ 56,000 kb/s) I'll be really happy to see better shine the eyes of my son more detail passing 100,000 kb/s see 120,000 kb/s my 64 gb μSD tested at 15 MB/s write (exFAT).
The problem is that I do not know where to go and what to do that's why I'm asking you to enlighten me.
I can provide if needed "SemcCameraUI.apk", "SuperVideoCamera.apk", or any other file.
Thank you in advance.
I am French and I translated with google translation :cool:

Thank for all :good:
 

One Twelve

Senior Member
Oct 28, 2013
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Not possible, sony does the highest 4k bitrates currently for smart phones. In fact its so high that the device tends to heat up and stop recording after a while if the ambient temperature is little over 25 degrees c. 4k recording is a beta feature because it cannot be used as long as 1080p say. The present cpu has a tough time delivering as it is.

If you want better rates then you will have to use a video camera that can deliver those rates. Or wait a couple of years for mobile cpus to catch up.
 

Tony72000

Member
Jul 17, 2014
7
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Not possible, sony does the highest 4k bitrates currently for smart phones. In fact its so high that the device tends to heat up and stop recording after a while if the ambient temperature is little over 25 degrees c. 4k recording is a beta feature because it cannot be used as long as 1080p say. The present cpu has a tough time delivering as it is.

If you want better rates then you will have to use a video camera that can deliver those rates. Or wait a couple of years for mobile cpus to catch up.

I did a test almost 15 minutes before break due to temperature knowing that I rarely exceed 1 minute youtu.be/vrBVmhQtmlo
I see no obstacle to this, I just ask to be referred but assistance will be more than better and will make many happy owners of Z2.
Btw I've seen on the app store play but diverted for photo (Z1) play.google.com/store/apps/details?id=com.wedy.auto20mp&hl=en
I aquired my SONY Z2 thanks to a flash sale of my operator with discounts for the price of € 89 (~ $ 100) and a camcorder for $ 2000 is not possible nor a priority.
Thanks anyway for taking the trouble to reply One Twelve :angel:
 

One Twelve

Senior Member
Oct 28, 2013
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I did a test almost 15 minutes before break due to temperature knowing that I rarely exceed 1 minute youtu.be/vrBVmhQtmlo
So we can see that at a temperature of 23 degrees c, with steady shot off that around 14 minutes recording in 4k is possible. File stored on 64GB class10 ultra. Phone is in the default sony case which you remove after five minutes.

Some people have said steady shot on or off does not make any difference to heating.

The focus hunt issue is present but only happens a little. 10 seconds out of 14 minutes. of course in 14 minutes the subject is not changing and light is decent. Focus hunt happens more often in lower light and is something sony should fix.

I see no obstacle to this, I just ask to be referred but assistance will be more than better and will make many happy owners of Z2.

Btw I've seen on the app store play but diverted for photo (Z1) play.google.com/store/apps/details?id=com.wedy.auto20mp&hl=en
xposed mod for photos allows SA at 20MP. There is no similar mod with video to increase the detail.

So instead of higher bitrate how about longer record time ?

There is a thread here on undervolting to increase record time. See also this post. CPU usage is the culprit. These tests show that some increase in duration is possible so people are expecting sony to fix this in a future update soon, hopefully.



Interesting this is without steady shot, yet it does not seem too jerky.

I aquired my SONY Z2 thanks to a flash sale of my operator with discounts for the price of € 89 (~ $ 100) and a camcorder for $ 2000 is not possible nor a priority.
Thanks anyway for taking the trouble to reply One Twelve :angel:
a Z2 for $100 is a good deal, i will have to pay seven times that amount.
 
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Tony72000

Member
Jul 17, 2014
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So we can see that at a temperature of 23 degrees c, with steady shot off that around 14 minutes recording in 4k is possible. File stored on 64GB class10 ultra. Phone is in the default sony case which you remove after five minutes.

Some people have said steady shot on or off does not make any difference to heating.
3 or 4 minutes and more

The focus hunt issue is present but only happens a little. 10 seconds out of 14 minutes. of course in 14 minutes the subject is not changing and light is decent. Focus hunt happens more often in lower light and is something sony should fix.
We'll see if Sony fixes the problem in a future update.

xposed mod for photos allows SA at 20MP. There is no similar mod with video to increase the detail.
That's what I'm looking for more bitrate video

So instead of higher bitrate how about longer record time ?
More recording time would be a plus, but as my first post this is the quality that counts as soon as it is no longer in direct sunlight the picture becomes runny, I had a customized apk for my HTX one X at a bitrate @ 60 Mb / sec

There is a thread here on undervolting to increase record time. See also this post. CPU usage is the culprit. These tests show that some increase in duration is possible so people are expecting sony to fix this in a future update soon, hopefully.
OK good thread ;)

Interesting this is without steady shot, yet it does not seem too jerky.
It's my dog :cool:

a Z2 for $100 is a good deal, i will have to pay seven times that amount.
And with your operator :crying:
 
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One Twelve

Senior Member
Oct 28, 2013
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3 or 4 minutes and more
When i tested a demo z2 in the shop, temp was 25-28 degree c i got 2:30 of 4k with steady shot on, did not test with steady shot off.

More recording time would be a plus, but as my first post this is the quality that counts as soon as it is no longer in direct sunlight the picture becomes runny, I had a customized apk for my HTX one X at a bitrate @ 60 Mb / sec
From here we can see the bitrates

1080p @ 17Mb/s & 4k @ 55Mb/s @156kbs audio

There is a big difference between Mbs for 1080p & 4k. Maybe its possible in the future that a mod for 1080p can do more than 17Mb/s but i doubt its possible to increase 55Mbs for 4k much more.

it would be good to get a mod for higher Mbs for 1080p @60fps as most people will use that than 4k.

in your comment for the video you say you changed from default 20Mbs on onex to 60mbs. This is a very big jump, did you really tell the difference ?

It looks nice but macro always looks good isn't it :p

when you move the camera i can see the frame drop because its 30fps.

Question is if you do not move much or fast its nice but any movement then it becomes little jerky ? Maybe there is some compromise here to get smooth video with movement but at slower Mbs. If you check the gsmarena link all the phones do not go above 20Mbs. And this in 2014, two years after one x.
 
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Tony72000

Member
Jul 17, 2014
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On the HTC one X storage is on internal memory only which is very slow (SD class 2 or 4) what is really limited and lose images when capturing by against the quality is really amazing.
The advantage of SONY Z2 is the support of the μSD with a good class U1 is more than meets the problem with my HTC One X which I modified the apk
The level 5.1 accepts bitrate 300000 kbps HIGH Profile 3840×2160 @ 31.7 fps :victory:
Possible bitrate of h264 en.wikipedia.org/wiki/H.264

Original HTC One X bitrate vs 60 Mb/sec ul.to/nihixzld
 
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Tony72000

Member
Jul 17, 2014
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I have not found a solution yet... No idea for find and change the video bitrate (apk, registry, other)?
 
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TheEndHK

Senior Member
Apr 25, 2011
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Not possible, sony does the highest 4k bitrates currently for smart phones. In fact its so high that the device tends to heat up and stop recording after a while if the ambient temperature is little over 25 degrees c. 4k recording is a beta feature because it cannot be used as long as 1080p say. The present cpu has a tough time delivering as it is.

If you want better rates then you will have to use a video camera that can deliver those rates. Or wait a couple of years for mobile cpus to catch up.

http://xdaforums.com/showthread.php?t=2519180
Your statement is entirely wrong. Samsung cam mod here does allowed to change 4k videobit(default is 48Mbit) and they don't have problem to use like 65Mbit or 80Mbit and they don't have overheating problem. This is only Sony's fault.

---------- Post added at 10:18 PM ---------- Previous post was at 10:03 PM ----------

I have not found a solution yet... No idea for find and change the video bitrate (apk, registry, other)?

There is a setting in SuperVideoCamera.apk regarding 4k bitrate and default is 55Mbit, I've tried to set it to 65Mbit but nothing happen, there is no 4k bitrate setting in SemcCameraUI.apk though.

The default 4k bitrate highest available in media_profiles.xml on z2 is already set at 100Mbit which is the max support value by s800/s801(from my understanding, Samsung is also only up to 100Mbit and this should be the s800/s801 limit). I think there is some other place locked it at 55Mbit in /system or kernel.

P.S. Can you share your 60Mbit camera.apk on One X? Which android ver of your camera.apk? I've got a HTC One S but my apk only max at 40Mbit.
 

Tony72000

Member
Jul 17, 2014
7
0
http://xdaforums.com/showthread.php?t=2519180
Your statement is entirely wrong. Samsung cam mod here does allowed to change 4k videobit(default is 48Mbit) and they don't have problem to use like 65Mbit or 80Mbit and they don't have overheating problem. This is only Sony's fault.

---------- Post added at 10:18 PM ---------- Previous post was at 10:03 PM ----------



There is a setting in SuperVideoCamera.apk regarding 4k bitrate and default is 55Mbit, I've tried to set it to 65Mbit but nothing happen, there is no 4k bitrate setting in SemcCameraUI.apk though.

The default 4k bitrate highest available in media_profiles.xml on z2 is already set at 100Mbit which is the max support value by s800/s801(from my understanding, Samsung is also only up to 100Mbit and this should be the s800/s801 limit). I think there is some other place locked it at 55Mbit in /system or kernel.

P.S. Can you share your 60Mbit camera.apk on One X? Which android ver of your camera.apk? I've got a HTC One S but my apk only max at 40Mbit.

:victory:

I have:
Android version 4.4.2
Build number 17.1.2.A.0.314
CPU MSM8974PRO-AB
Model D6503

Yes APK here tested with HTC One X
ul.to/jztjdy6v
 
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TheEndHK

Senior Member
Apr 25, 2011
2,668
808
Does it work on the Z2 ?

Until it does what i said stands.

Your concept is wrong again. I can mod the 1080P bitrate to 80Mbit on Sony and works great. We can't do it on 4k because there is some place locked the bitrate at 55Mbit in /system or kernel as I mention earlier and we don't have enough skills to find it out.

Note3/S4/S5 is also based on s800/801 and DDR3 architecture, they can do it without problem meant this is only Sony's fail. BTW, it already proved 55Mbit is not the highest workable 4k bitrate in the world.
 

One Twelve

Senior Member
Oct 28, 2013
2,619
640
Your concept is wrong again. I can mod the 1080P bitrate to 80Mbit on Sony and works great. We can't do it on 4k because there is some place locked the bitrate at 55Mbit in /system or kernel as I mention earlier and we don't have enough skills to find it out.
Ergo its not possible on the Z2 yet.

How do you find 1080p at 80Mbs, 30fps is 17Mbs, 60fps is 30mbs. How is 1080p frame rate at 80mbs ?

Note3/S4/S5 is also based on s800/801 and DDR3 architecture, they can do it without problem meant this is only Sony's fail. BTW, it already proved 55Mbit is not the highest workable 4k bitrate in the world.
So may be possible in the future but not now. But i doubt it given the heating. yes if the temp is 10 degrees c where you are or you are ok with 1-2 minute clips then its possible.
 
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TheEndHK

Senior Member
Apr 25, 2011
2,668
808
Ergo its not possible on the Z2 yet.

How do you find 1080p at 80Mbs, 30fps is 17Mbs, 60fps is 30mbs. How is 1080p frame rate at 80mbs ?


So may be possible in the future but not now. But i doubt it given the heating. yes if the temp is 10 degrees c where you are or you are ok with 1-2 minute clips then its possible.

1080P@30fps the bitrate is changeable, however both 60fps is locked at 30Mbit/s and 720p@120fps is locked at 50Mbit in /system or kernel.

Actually, I own a z1c not z2 but I can do the 4k with mod. I think the heat control is a bit better on our 4.4.4(I know z2 still no 4.4.4 implied Sony said z1/z1c is the real flagship from user number base of view... lol). I've tested I could do 1080p@80m or 4K for 20mins length in an Okay environment, the temp is managed to not over 41.5 degrees c but if I put the phone under direct sun light during in summer time, the overheat problem may appear.
 

One Twelve

Senior Member
Oct 28, 2013
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I've tested I could do 1080p@80m or 4K for 20mins length in an Okay environment, the temp is managed to not over 41.5 degrees c but if I put the phone under direct sun light during in summer time, the overheat problem may appear.
OP can record 4k for around 15mins at 22 degrees c as shown in his YT video. So there is hope, just don't know when 4k at higher than 55 Mbs will be possible.

I wonder is there really so much difference between 55Mbs and say 80Mbs in 4k :)

If you can record for longer time 4k@55Mbs its better isn't it ?

1080p at 30fps @80Mbs vs 17Mbs will have a bigger difference.
 

TheEndHK

Senior Member
Apr 25, 2011
2,668
808
OP can record 4k for around 15mins at 22 degrees c as shown in his YT video. So there is hope, just don't know when 4k at higher than 55 Mbs will be possible.

I wonder is there really so much difference between 55Mbs and say 80Mbs in 4k :)

If you can record for longer time 4k@55Mbs its better isn't it ?

1080p at 30fps @80Mbs vs 17Mbs will have a bigger difference.

The problem mainly comes from the H264 encoder produced real bad video quality on z1/z2 series. I've got some 4k source files from note3/s4, they are much better than z1/z2 but bear in mind they are still using Sony sensor(13M ExmorRS).

The 17.5M default 1080p@30fps quality is even much worse than my old Xperia S(default is 20M in ICS but much better result). I've also got a HTC One S which shoot at 1080P 40Mbit and I need to use at least 65 ~ 70M to achieve the same quality level.

Theoretically, you may not real need such high bitrate but in practical, Sony 's software development is very poor this time and we need super high bitrate to fix problem.

Since I've been roll back 4.4.2 now for better compatibility with some of my older apps so I can't test it again on 4.4.4 on my z1c. But I just tested I could shoot 14:25 mins of 4K length on sdcard before it stopped and the phone reported 47.5 degree c. The heat control on 4.4.4 may a bit better.
 
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One Twelve

Senior Member
Oct 28, 2013
2,619
640
I have recently been a SONY Z2 filming mainly 4K
Even if I find pretty good video (3840x2160 @ 56,000 kb/s) I'll be really happy to see better shine the eyes of my son more detail passing 100,000 kb/s see 120,000 kb/s my 64 gb μSD tested at 15 MB/s write (exFAT).
The problem is that I do not know where to go and what to do that's why I'm asking you to enlighten me.
Some developments here

http://xdaforums.com/xperia-z2/general/testers-z2-4k-bitrate-mod-t2845509

80Mbs
 

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    OP can record 4k for around 15mins at 22 degrees c as shown in his YT video. So there is hope, just don't know when 4k at higher than 55 Mbs will be possible.

    I wonder is there really so much difference between 55Mbs and say 80Mbs in 4k :)

    If you can record for longer time 4k@55Mbs its better isn't it ?

    1080p at 30fps @80Mbs vs 17Mbs will have a bigger difference.

    The problem mainly comes from the H264 encoder produced real bad video quality on z1/z2 series. I've got some 4k source files from note3/s4, they are much better than z1/z2 but bear in mind they are still using Sony sensor(13M ExmorRS).

    The 17.5M default 1080p@30fps quality is even much worse than my old Xperia S(default is 20M in ICS but much better result). I've also got a HTC One S which shoot at 1080P 40Mbit and I need to use at least 65 ~ 70M to achieve the same quality level.

    Theoretically, you may not real need such high bitrate but in practical, Sony 's software development is very poor this time and we need super high bitrate to fix problem.

    Since I've been roll back 4.4.2 now for better compatibility with some of my older apps so I can't test it again on 4.4.4 on my z1c. But I just tested I could shoot 14:25 mins of 4K length on sdcard before it stopped and the phone reported 47.5 degree c. The heat control on 4.4.4 may a bit better.