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Why does my video get blurry?
2504 30 2016-5-3
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kirkd1989
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So I got a ND 8 on, flying on manual, 100/60. And the video gets blurry and unfocused, and then focused and so on and so forth. I can't figure it out. Here's a link. Any help would be greatly appreciated.

https://www.skypixel.com/pilot/videos/share/journey-from-my-heart-ad7d1d61-dc85-4add-8da6-097033b03ee9?account=kirkd1989
2016-5-3
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Geebax
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It is caused by the compression used on Skypixel, and the whispy trees are not helping either. But in the end, we have no idea what Skypixel does to a piece of footage, whereas with Youtube it is a pretty known quantity. Try putting the same clip up on Youtube and see what it looks like.

BTW, you should not be using an ND8 in that situation, is is not bright sun, and shooting into the sun like that is only going to make the picture darker.
2016-5-3
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kirkd1989
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No it's not sky pixel. Looking on the app before I even up load it, it's the same way.
2016-5-3
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kirkd1989
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And an nd8 is better than nothing. It got me way closer to the preferred iso and frame rate than it did with it off.
2016-5-3
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kirkd1989
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Everything about that shot I liked except that it kept blurring out randomly. Like it was adjusting.
2016-5-3
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Jkeller84
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kirkd1989 Posted at 2016-5-3 23:06
No it's not sky pixel. Looking on the app before I even up load it, it's the same way.

What app? Are you editing in the DJI Go app and uploading from there? You should take the card out and import directly to your computer. Edit and upload from there. Also, I agree with Geebax. Definitely not an ND filter situation.
2016-5-3
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DJI-Paladin
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Hello kirkd1989, it would be better if you can post a original video using UV filter here.
2016-5-4
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phantom-four.co
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Probably not the problem but, do you have the same problem without the ND filter? Filter elements can affect quality substantially depending on the quality.
2016-5-4
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kirkd1989
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Jkeller84 Posted at 2016-5-3 22:09
What app? Are you editing in the DJI Go app and uploading from there? You should take the card out ...

I record it and as soon as I watch on my app before even disconnecting aircraft or anything lol, it does that. Why dot I use a nd here? Without it was over exposed to nearly everything, with it I got closer to the preferred shutter rates and such.
2016-5-4
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kirkd1989
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I don't think you guys see what I'm talking about. It's nothing to do with uploading bc before I cut it on the dji app or anything it does the unfocus thing.
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Jkeller84
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kirkd1989 Posted at 2016-5-4 19:53
I record it and as soon as I watch on my app before even disconnecting aircraft or anything lol, i ...

Well yeah, that's the point. Quality is never as good as it should be when I view videos on the app. Extract the video from the SD card and post the actual file.
2016-5-4
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Jkeller84
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kirkd1989 Posted at 2016-5-4 19:53
I record it and as soon as I watch on my app before even disconnecting aircraft or anything lol, i ...

Also, what quality are you shooting at? Is it 4K 24fps?
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kirkd1989
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Jkeller84 Posted at 2016-5-4 08:09
Well yeah, that's the point. Quality is never as good as it should be when I view videos on the ap ...

noooo man lol. this is the only video that does it this bad. my other ones don't. again nothing to do with app.
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Jkeller84
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kirkd1989 Posted at 2016-5-4 20:26
noooo man lol. this is the only video that does it this bad. my other ones don't. again nothing to ...

I understand 100% what you are saying. Please extract the video and post it straight from the SD card. Don't compress it to any websites, just post the link to a Dropbox file so we can see it in its raw. That way we can tell for sure what the problem might be. You can say all you want that it's not the app, but until we see the raw file, we can't be sure. Apps and wireless connectivity can do strange things. We are trying to help, but you aren't complying with requests.
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kirkd1989
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Jkeller84 Posted at 2016-5-4 08:43
I understand 100% what you are saying. Please extract the video and post it straight from the SD c ...

lol im gonna post it! my bizzle my nizzle.
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Jkeller84
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kirkd1989 Posted at 2016-5-4 20:48
lol im gonna post it! my bizzle my nizzle.

Thanks bro. Just want to help you get to the root of your issue. What quality and frame rate are you recording at?
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Aardvark
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Well it's playing back in skypixel @ 720p. So was it recorded on the sd @ 720p, or was this the 720p recording from the RC  ? Why not record @ 4k ?

The blurring looks like the data compression applied either by the Phantom to the images or by skypixel or both is messing things up.

You could always try a rerun without ND filter and camera on automatic and compare.

Your camera is set up to allow for shooting directly into the Sun, so all else will be darker, hence the compression errors ?


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kirkd1989
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Aardvark Posted at 2016-5-4 08:50
Well it's playing back in skypixel @ 720p. So was it recorded on the sd @ 720p, or was this the 720p ...

shot in 4k, 30fps for sure, 100iso with a 60shutter rate I think.
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kirkd1989
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Here is another video. Same day 10 min later. No filter. Flying away from sun. It still unfocuses a couple times but not as bad. https://www.skypixel.com/pilot/videos/share/i-have-a-dream-2c30165d-3c27-49e0-ae01-90b3b02933f7?account=kirkd1989
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Jkeller84
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kirkd1989 Posted at 2016-5-4 22:53
Here is another video. Same day 10 min later. No filter. Flying away from sun. It still unfocuses a  ...

So yeah, it definitely looks like app and device compression. Link us to the Dropbox with just the video file from the SD card so we can tell. I have a 4K monitor and will be able to see if it looks good or if something else is wrong.
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kirkd1989
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Jkeller84 Posted at 2016-5-4 11:18
So yeah, it definitely looks like app and device compression. Link us to the Dropbox with just the ...

but why does it do that lol. some videos don't do it.
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Jkeller84
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kirkd1989 Posted at 2016-5-4 11:21
but why does it do that lol. some videos don't do it.

Videos are taken on your phantom and stored on your sd card. All of that is not connected to your controller by any wires. Wireless transmission loses quality. I could go into detail for you, but I'll save you the boredom.
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kirkd1989
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Jkeller84 Posted at 2016-5-4 12:26
Videos are taken on your phantom and stored on your sd card. All of that is not connected to your  ...

just got sd card adapter and imported them, quality is WAYYYY better but still blurs out. I think it was the connection or maybe I was on auto settings and didn't know and it kept focusing.
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kirkd1989
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Jkeller84 Posted at 2016-5-4 12:26
Videos are taken on your phantom and stored on your sd card. All of that is not connected to your  ...

next question. when importing from sd to phone, using the adapter, videos it says file format not supported. Does that mean iphone 6 cant handle the size or quality or what?
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Jkeller84
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kirkd1989 Posted at 2016-5-4 11:28
next question. when importing from sd to phone, using the adapter, videos it says file format not  ...

Yeah I don't think iPhones can import the 4K videos. I could be wrong on that. Just use your computer to edit and upload them wherever you want.
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kirkd1989
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Jkeller84 Posted at 2016-5-4 13:35
Yeah I don't think iPhones can import the 4K videos. I could be wrong on that. Just use your compu ...

But yeah why don't I use an nd there? Without it I couldn't get anywhere near iso 100 and the correct frame rate. With it I was much closer
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Jkeller84
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kirkd1989 Posted at 2016-5-4 13:58
But yeah why don't I use an nd there? Without it I couldn't get anywhere near iso 100 and the corr ...

Because you had the camera pointed into direct sunlight. The only thing that was exposed properly was the sun. Everything else was way too dark. I would avoid direct sunlight and concentrate on exposing the scene correctly, instead of the ball of fire in the sky. Can add a graduated filter in post.
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kirkd1989
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Jkeller84 Posted at 2016-5-4 16:23
Because you had the camera pointed into direct sunlight. The only thing that was exposed properly  ...

Definitely, just in this scenario I was trying to get the shot with the sun in the corner as is. It looked cool when I was looking at it.
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Geebax
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kirkd1989 Posted at 2016-5-5 08:45
Definitely, just in this scenario I was trying to get the shot with the sun in the corner as is. I ...

Well, that's fine as long as you don't care what the ground areas look like. In any event, it is not a shot where you use an ND filter.
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kirkd1989
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New video today. Same time of day. Same lighting. No filter. Still does the auto focus thing. Weird.
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Geebax
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kirkd1989 Posted at 2016-5-5 11:26
New video today. Same time of day. Same lighting. No filter. Still does the auto focus thing. Weird.

Can you please post a link to the original file on Dropbox, anything anyone says without looking at the original file is just speculation. The 'focus thing' has nothing to do with focus, it is a compression artifact called Macro Blocking, and is is going to be there whether you use an ND filter or not.


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