[Q] Black lines in video recording - General Questions and Answers

Hi,
I have been getting these black rolling lines moving upwards when i am recording videos using my Galaxy R in fluorescent light. The lines make the video very annoying to watch. The videos are clear outdoor in day light but the problem shows up in fluorescent lights. The video is recorded at 30.25 FPS. I read it has to do with flickering rate of fluorescent light etc. If that was the reason for it , is there any way to record at lesser FPS like 28 or 29. Does anybody else face the problem with camera?

Yes,that is definitely the reason. Check this http://forum.xda-developers.com/showpost.php?p=17791551&postcount=20 and this http://forum.xda-developers.com/showthread.php?t=1271927 ,hope it can help..

b_henry said:
Yes,that is definitely the reason. Check this http://forum.xda-developers.com/showpost.php?p=17791551&postcount=20 and this http://forum.xda-developers.com/showthread.php?t=1271927 ,hope it can help..
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Dude looks like all this work needs rooting and modding.Isn't there an app which can control these settings while recording / help record in low FPS.

Related

OMG I know how to increase video recording FPS to 25!!

Trust me this works, I just found this out right now and had to tell you guys. All you do is lower the brightness in the settings. You'll notice right away that as you keep lowering the brightness the framerate starts increasing. Just jitter your hand while you lower brightness.
I also strongly suggest you lower the contrast(to 1 or 2) in the camera settings to brighten up shadows.
Great. The brightness itself doesn't seem to suffer as it compensates the brightness somehow and the fps is nicceee
D: Brilliant! Well, at least that lessens my dissapointment in my TP xD
This really works. Thank you man.
I just tested it out by recording 2 videos. One at normal brightness, and one with 0 brightness.
The zero brigthness is CLEARLY more fluid. HTC you suck for not giving us good frame rates out of the box. Also lowering the brightness level doesn't seem to actually make the video much darker.
What!!? I can't believe this works!! It's awesome!
Now we just need a program to change the backlight up and down when the camera app is open/closed!
What is the framerate if you dont do this?
I made those adjustments and it makes the shadows appear VERY grainy.
Are you talking about fps in preview mode or does it actually change the fps when recording video?
Thanks.
Cool, I'll try it as soon as I get home.
do you mean i have to put brightnes to 9 o to the lower possible value (-1.5)?
TNX
is there a chance to do that in the xperia x1?
My recordings are still 18fps after doing this, but the video is much smoother when recording in low light areas (which is pretty much anywhere in-doors).

Video Problem

I have a problem with my phone galaxy core gt-i8262 ever since i bought. It records a video with a darker output compared to others even if the flash is on. Settings are set to best output. This only happen when i record at a bit darker place actually in evening this happens but when the area is bright the video recordings are fine. Is there a way to make the video recording brighter?
nothing to do with it.. n obviously it does in every camera during evening .. if ur using (stock) one.
> try to increase exposure of it.. in camera setting..n brightness.
or use any third party app. :good:

Blurry sides when 60FPS recording

Hi guys, when i was recording 60fps video two days ago, i saw that now and then the sides of my video gets blurry (for less then a second) . Sometimes its the right side of the screen, sometimes the bottom, sometimes top..
For example:
http://i.imgur.com/Hxffzvf.jpg
My question is: is this normal, do you guys have the same issue? I couldn't find anything on the internet about this.
This is probably the effect of electronic image stabilization (EIS), I've seen it also on my 4K videos. Try to turn off SteadyShot and see if it helps.

Video recording on stock camera app and gcam

Hello all,
I have a few questions concerning the quality of video recording on stock and gcam app. Kinda disappointed about the quality, and you maybe able to tell me if it's normal or if I could fix it (first of all, sorry for my english, not my mother tongue).
I found that in 1080 30 fps, outdoor videos, the details are really poor, even with sufficient light. It seems to be "grainy" (1st link below).
Inside videos with low light (my place around 10pm with 1 ceiling light on) are very blurry, especially on the corners. The autofocus is messy (not focusing, or hardly in automatic mode, I have to go through manuel focusing, and it's not always working).
When I switch to 1080p 60 fps, the video is much darker, is that normal ? (I heard it is).
I'm running the beta 6, with the latest gcam port app.
The links I provide are google photos updates.
Do you think it's normal, or the OP6 I own has an hardware issue ?
Thanks
1st link, outside in 30 fps https://photos.app.goo.gl/5q325n8771afVhYy9
my place, low light in 30 fps https://photos.app.goo.gl/Q98PdfhSehKfqKQb8
my place, low light in 60 fps https://photos.app.goo.gl/zsayngZK9rvNPMHJ6

Video Problem

Hi, i have been watching a lot of videos in reviews and youtube and i have noticed a common problem in video recording, like some frame dropping. You can check in this video with the train movement.
youtube.com/watch?v=88KVStbePvA#action=share
(i can't share the full link, please put the http an 3w first)
Is any way to fix it?
Thanks!
Hi,
yes it is.. Disabling EIS helps a lot, but mostly it works without often frame drops using FilmicPro or Open Camera ( this is most stable for video recording).
About fix for a stock camera, I would not put many hopes for it, even Mi 10 Pro with SD 865 does video with stutters. I believe this most of software problem.
Similar to what Dom said. I don't think it's frame drop, it looks like the image EIS stabilisation is getting confused with the scene moving at different speeds. It's probably trying to track train motion and floor motion.
Try again with image stabilisaion disabled. If you need steady footage maybe see if your video editor handles it better.
Also in the low light scenes the EIS gives footage a weird ghosting effect (even the GoPro7 does it).
I wish there was an auto disable EIS in low light option
Shouldnt the OIS help? So its not completely unstabillized? That should work for video as well and maybe evene better?
ond96 said:
Shouldnt the OIS help? So its not completely unstabillized? That should work for video as well and maybe evene better?
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OIS is always on and cannot be turned off as it's a physical part of the camera sensor. However the OIS level of stabilisation is subtle compared to EIS

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