[Q] Question about 9100 front webcam frame rate limited to 15fps - Galaxy S II Q&A, Help & Troubleshooting

Hi,
I try to access the front camera of this phone.
From the debug information, I get that "preview-frame-rates" of the front camera is only 15.
Therefore, when I record a video with this front camera, the maximum fps I can achieve is 15.
However, when I use the default Camera app from the phone and try to record a video from the front camera, I can get around 25 fps. Not sure how this app can do this. Any comments are welcome.
Another interesting thing is: by using the Camera app from the phone, there are two modes with front camera, one for video saving and one for image saving.
It is very obvious that the live preview in video saving mode is much faster (around 25fps) than the live preview in image saving mode (around 15fps judged by eyes), but it is also darker. I guess they use different settings for exposure control for these two.
Is there anyway we can get achieve a higher preview-frame-rate of the front camera ideally through android sdk???
Any insights are welcome.
Thanks.
George

Related

[Q] Low frame rate of galaxy 2 front camera

Hi,
I try to access the front camera of this phone.
From the debug information, I get that "preview-frame-rates" of the front camera is only 15.
Therefore, when I record a video with this front camera, the maximum fps I can achieve is 15.
However, when I use the default Camera app from the phone and try to record a video from the front camera, I can get around 25 fps. Not sure how this app can do this. Any comments are welcome.
Another interesting thing is: by using the Camera app from the phone, there are two modes with front camera, one for video saving and one for image saving.
It is very obvious that the live preview in video saving mode is much faster (around 25fps) than the live preview in image saving mode (around 15fps judged by eyes), but it is also darker. I guess they use different settings for exposure control for these two.
Is there anyway we can get achieve a higher preview-frame-rate of the front camera ideally through android sdk???
Any insights are welcome.
Thanks.
George
Questions or Problems Should Not Be Posted in the Development Forum
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Moving to Q&A
Good question, the low camera framerate in darker conditions annoys me too.

What driver is used by apps to access device camera?

What I mean is ... let's say I am using Skype for a video call. At the moment of connecting to the camera, what is the way it does this? What code is used? What part of the camera is accessed? When I open the camera app of the device, and trigger between photo/video - I get 2 absolutely different images of the preview ( the viewfinder ). The photo preview is on a low fps, if there is enough light, if I reduce the brighness, the preview fps gets smoother.
But when I swicth to video , I get a very clear image, with a high fps, little noisy and clear. Though, the preview of the photo camera is blury ( noise reducted ) and low on frame rate.
So, the calls in Skype has the exactly same image type like the photo preview, blury and fps low.
Is there any way to drive Skype using the camera type of the video viewfinder? It is a very huge difference in quality, and it is very weird, video calling apps use the worst part of the camera, when there's actually obvious the sensor is a high end one, showing it actually can offer a good quality of the image ( while in video mode ).
Please help, I want to try to develope something related to this. How does an app choose how to use phone's camera?

What is best video options for different recording types

I want to ask something about some different video recording situations
What is best video recording options for wide angle video output (quality, stabilisation fps etc...)
What is best video recording options for normal angle video output (quality, stabilisation fps etc...)
What is best video recording options for X3 zoom video output (quality, stabilisation fps etc...)
I see not so many video options but you know what I mean, it's resolution.
Resolution changes the field of view output of video.
What are your settings and why are you using that for different situations.
Shine my dark road with your light of wisdom
I use :
- 1080p 30fps : when I film in a regular way such as filming landscapes, or filming things I don't intend to put an emphasis on
- 1080 60fps : I use this more when I have "living" subject on my frame, such as filming my friends laughing or doing whatever they are up to. The idea is to be able to apply a little slow motion in post to emphasize some moments.
- 120fps : that option is on the slo-mo options. I only use that feature in great lighting and if I intend to create a more dramatic look to the moving subject I wish to apply a slow mo on. But I rarely use that feature since I don't have much opportunity to capture fast moving subject.
I recommend using the Pro mode for video since you can control the focus. (Manual focus, autofocus, focus lock)
Your camera settings depends on what you want to shoot. You will have to play around with all of them and well switch from a mode to another depending on the situation.
30fps provide better image quality
60fps is smoother but somehow less sharp in some situation
120fps don't use it if you don't have enough light otherwise you'll end up with a blurry not sharp not good looking slo-mo.
There are 3rd app such as FilmicPro that gives you more freedom with the camera settings. But I don't use them since I haven't found one that take advantage of the 3 lenses that comes with the Mate 20 Pro. So now I deal with the stock camera in Pro mode.
Hope it helps
This helps a lot. Thanks for posting details.
Mini Jay said:
I use :
- 1080p 30fps : when I film in a regular way such as filming landscapes, or filming things I don't intend to put an emphasis on
- 1080 60fps : I use this more when I have "living" subject on my frame, such as filming my friends laughing or doing whatever they are up to. The idea is to be able to apply a little slow motion in post to emphasize some moments.
- 120fps : that option is on the slo-mo options. I only use that feature in great lighting and if I intend to create a more dramatic look to the moving subject I wish to apply a slow mo on. But I rarely use that feature since I don't have much opportunity to capture fast moving subject.
I recommend using the Pro mode for video since you can control the focus. (Manual focus, autofocus, focus lock)
Your camera settings depends on what you want to shoot. You will have to play around with all of them and well switch from a mode to another depending on the situation.
30fps provide better image quality
60fps is smoother but somehow less sharp in some situation
120fps don't use it if you don't have enough light otherwise you'll end up with a blurry not sharp not good looking slo-mo.
There are 3rd app such as FilmicPro that gives you more freedom with the camera settings. But I don't use them since I haven't found one that take advantage of the 3 lenses that comes with the Mate 20 Pro. So now I deal with the stock camera in Pro mode.
Hope it helps
Click to expand...
Click to collapse
Sure it helps. Thanks for your effort :good:

Camera App Fixes?

I've watched a couple of reviews and read others regarding the camera apps and performance, such as the erratic HDR performance and slow switching between cameras, RAW support not available in all cameras, frame rates in video, and so on.
Notably this one: https://www.youtube.com/watch?v=fjSX1j4WBRo and this one: https://www.youtube.com/watch?v=TrZAb4dUfHQ
Has Sony since then launched updates to fix these issues?
Avoid this phone if you;re planning using camera. None of it has been fixed...
Fujimens said:
I've watched a couple of reviews and read others regarding the camera apps and performance, such as the erratic HDR performance and slow switching between cameras, RAW support not available in all cameras, frame rates in video, and so on.
Notably this one: https://www.youtube.com/watch?v=fjSX1j4WBRo and this one: https://www.youtube.com/watch?v=TrZAb4dUfHQ
Has Sony since then launched updates to fix these issues?
Click to expand...
Click to collapse
the launch speed of the camera is normal like the other high-end, there is just the ultra-wide angle or there is a delay but on most other smartphones this delay also exists. For the range I did not notice anything strange, it is normal and not exaggerated (the dynamic range is different from the HDR which is purely software to access it must pass a manual mode), for the rest it acts as their camera (for example in landscape there will be the backlight settings but if there is a human in front of the forces will highlight the face ...). For example, there will be a photo in auto on the stock camera and Google cam HDR +, I much prefer the rendering, the details, the noise of the camera stock.
Camera works fine, dont believe everything you see on the internet. I have this phone since september and camera app has not crashed once since then. So, yeah..
I hope they will finally fix lack of 21:9 mode in main camera, lack of 4k 60fps and 4k video stabilisation crap that actually is disaster...
None of those were fixed :/
decomposed said:
I hope they will finally fix lack of 21:9 mode in main camera, lack of 4k 60fps and 4k video stabilisation crap that actually is disaster...
None of those were fixed :/
Click to expand...
Click to collapse
21:9 photo mode is pointless when you can take a 4:3 photo and zoom in to 21:9.
That's all the 21:9 mode would do so not much point investing it in

Question: Open Camera 4K 60fps

Has anyone tried recording 4K at 60fps using Open Camera?
I'm thinking of buying this phone but there are others around the same price that support that.
I have an Xperia XA2 Ultra. Open Camera allows the main selfie camera to record video in 4K 30fps when by default
it can only record 1080p
Could anyone try the app and let me know?
I would really appreciate it
"Serious Camera Error" when 4k 60fps is set.
Oswaldo212 said:
Has anyone tried recording 4K at 60fps using Open Camera?
I'm thinking of buying this phone but there are others around the same price that support that.
I have an Xperia XA2 Ultra. Open Camera allows the main selfie camera to record video in 4K 30fps when by default
it can only record 1080p
Could anyone try the app and let me know?
I would really appreciate it
Click to expand...
Click to collapse
I just installed open camera, though I dont find the HDR option in video settings, but setting to 4k/60 with max buffer of 200 seems to record without a problem. I tried front facing camera, same goes...
I dont see an issue but again, I dont see HDR option in it, also the selfie camera on photo mode, max buffer and max quality seems only as good as normal camera app, the default camera app maybe even a little sharper but barely noticeable but if you really care for 60fps both back and front worked in [email protected] which is weird lol I never expected that, I need to go further testing to see how good the open camera is, compare 60fps in 4k to 60fps 30 and compare quality as well to get the full idea, but I did play around with photos a little bit, and to be honest open camera seemed to have much more artificial sharpness, the photo zoomed out looks sharp even sharper than default camera, but put on a big screen or zoomed in, the default camera has much more respectable sharpness that has way less noise and grain which makes the photo more realistic and more natural overall thats why I feel like the open camera is just a gimmick, all it can provide is 60fps in 4k in both cameras, but again I have to check the quality to see if its even worth it because even with quick tweaking in open camera, I still cant get the best combination of brightness sharpness and color accuracy, yet the default camera app gives a splendid true mix of those, maybe going deeper in manual settings adjusting all these aspects manually could lead to good quality outcomes, but to be honest, no one will ever want to adjust every time they wanna take a pic/video so yah
Thanks a lot Man
I get a lot of noise when recording 4K with the selfie camera, maybe because it wasn't meant to do that or it is just Open Camera.
Thanks again

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