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footage from phone spoiled

Contributor ,
Nov 24, 2021 Nov 24, 2021

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Hello in my project i have mixed footage from xt3 and from my samsung m51. Both are 4k, but the project is 1280x720. The result in export make the clip form the phone bad, much worste than the original. I have exported 2 pass vbr at 10

May be it needs higher export framerate? I am thinking that the phone footage ge spoiled quick if too compressed or with a not high framerate

 

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Adobe Community Professional ,
Nov 24, 2021 Nov 24, 2021

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quote

Both are 4k, but the project is 1280x720.


By @stefanocps

 

Why is that?

 

Edit 4K in a 4K timeline that matches the fps of the footage and export 4K. If you still want to export to 1280x720, just set that upon export but be aware of that downscaling footage always degrade the footage. Don´t mess with frame rates, it wont do anything to improve the quality. If you footage is 30 fps, export as 30 fps. 

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Contributor ,
Nov 24, 2021 Nov 24, 2021

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it is an interview, and it will not be displatyed other than facebook or youtube on mobil ephone, so i shoot 4k and wotk at 720 bcause i can crop,and with the same shoot i can have more level of framing, from the whole scene to the closeup ....

i regularly do that, never work at 4k and i never see big problem, but the phone footage have it

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Engaged ,
Nov 24, 2021 Nov 24, 2021

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How much did you zoom in onthe phone footage? Were you working in a 720P sequence?

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Engaged ,
Nov 24, 2021 Nov 24, 2021

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Phone footage by nature is noisier than say a larger sensor like an XT4. So going from 4K -> 720P you shoudl probably restrict yourself to a maximum of 200% zoom. Technically you could go 300% but I reckon you'll start to see all teh artifical sharpening and noise in that smaller sensor.  Also you have to work in a 720P timeline. You can't zoom in on something in a 4k timeline and then render it out at 720P - Premiere Pro does not do recursive scaling.

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Engaged ,
Nov 24, 2021 Nov 24, 2021

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You need to describe the problem better than "bad". Noisy? Moire? Low res? Stuttering? Shudder?

You can't improve footage by increasing the framerate. The framerate should match your footage. If you shot at 30fps, then your sequence should be 30fps and your export should be 30fps, although Premiere does a decent job of adjusting framerates if you have sources with different rates. About the only thing it hates is Variable frame rates from mobile phones, but this would show up in the edit as problematic audio sync.

 

By 2 pass VBr at 10, do you mean 10Mbits a second? And what codec and container are you going to? I suggest using one of the social media presets for H264 .mp4 - eg Youtube or Vimeo 720P. thes are optimised to give good quality at optimal data rates.

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Contributor ,
Nov 24, 2021 Nov 24, 2021

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ok  the phone footage i cropped to 69%

Then when i talk about framerate before, i was mistake, i meant bitrate, so i was meaning may be increasing the bitrate the footage is better?

Framerate..also is a problem, as fuji was at 25 while phone couldn't set it other than 30

And the sequence is at 25

..how can be adjusted this?

The video look lowres, i will post some frame

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Contributor ,
Nov 24, 2021 Nov 24, 2021

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here it is the video, exported h264 vbr1 15mbps

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Adobe Community Professional ,
Nov 24, 2021 Nov 24, 2021

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If the phone footage is variable frame rate *and* you are asking Pr to change the frame rate, then I expect you would get the issue you have. 

Not only is the video noisy (you may or may not be able to correct that), but you are getting artifacts at regular intervals.

I recommend you check your phone footage in MediaInfo's Tree View and see if it is variable or constant frame rate. If variable, run it through Handbrake and make it constant frame rate.

A possible fix for the noisy video would be the Neat Video plugin, but it must be purchased.

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Contributor ,
Nov 24, 2021 Nov 24, 2021

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ok it is variable. I have used as really b side, so fewq frames now and then, not much.. Now ho do i do the procedure to keep the edit in premiere? It is only 1 file, loaded oin premiere and transcoded with proxies.What i would do is, converting with handbrake  (to fixed ok but 30fps or 25?) and then use REPLACE footage in premiere bin. Correct?Any free alternative to neat video?

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Adobe Community Professional ,
Nov 24, 2021 Nov 24, 2021

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@stefanocps wrote:

ok it is variable....What i would do is, converting with handbrake  (to fixed ok but 30fps or 25?) and then use REPLACE footage in premiere bin. Correct?Any free alternative to neat video?


 

Fix it in Handbrake to its native frame rate. If you don't like the results, try setting it to your sequence frame rate. It's possible that Handbrake has algorithms for frame rate conversion that you will like better than Pr's.

 

I don't know of any free alternatives to Neat Video, but others might.

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Community Beginner ,
Nov 24, 2021 Nov 24, 2021

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You don't need handbrake for better frame conversion than PP can do, Adobe have program for that, called Adobe After Effects, lol 

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Community Beginner ,
Nov 24, 2021 Nov 24, 2021

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btw for noisy video DaVinci Resolve have the best noise reduction and many other thins, worth buying

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Community Beginner ,
Nov 24, 2021 Nov 24, 2021

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Adobe don't have good algorithem for that, if you would export with the same settings with other program you would get different resoults. There are some encoding programs on the market, which are used by the leading post production company, try on web. Frame rate won't help, maybe bitrate will do a job. 

 

I was getting very low size mp4 from the post production houses / cartoons, which looked fantastic, no artifacts, no noise... when i exportet the same file for the audio post production department - they were doing dubing, picture was a mess and my file site was 50mb, and their like 4mb.

 

Best

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Community Beginner ,
Nov 24, 2021 Nov 24, 2021

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also try to play with key frame distance on export settings bellow the bitrate settings.

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Contributor ,
Nov 24, 2021 Nov 24, 2021

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sorry i don't understand this

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Community Beginner ,
Nov 24, 2021 Nov 24, 2021

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