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What is the best Bitrate for UHD 4K encoding in H264?

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Devinda Fernando
What is the best Bitrate for UHD 4K encoding in H264?
on May 11, 2018 at 2:52:53 am

The default the Premiere Pro gives for 1920x1080 encoding in H264 codec is:

Target Bitrate: 32 Mbps
Maximum Bitrate: 40 Mbps

What would be the ideal for 4K UHD (3840x2160)

This is not for YouTube or Vimeo, but the maximum quality for a 4K screening? There is no default Bitrate setting since I have to set the 3840x2160 Export setting manually.

Cheers.


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Ann Bens
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 11, 2018 at 8:46:13 am

Depends on the display device used.

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Adobe Certified Expert Premiere Pro CS2/CS6/CC
Adobe Community Professional


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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 11, 2018 at 11:40:19 am

Basically for a 52 Inch OLED Monitor or something of similar High End Picture quality. Is there a Bitrate where the image starts to degrade below? Or is there an upper limit where you get no additional Detail or resolution, but only bigger file sizes?


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Ann Bens
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 11, 2018 at 1:53:33 pm

No point in going higher with the bitrate then the original.
You need to do some trial and error.
If your bitrate is too high playback might fail.

-----------------------------------------------
Adobe Certified Expert Premiere Pro CS2/CS6/CC
Adobe Community Professional


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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 2:28:26 am

Thanks Ann I think that basically answers my question. I shot on a Phantom 4 Pro in 4K UHD. I checked the bitrate for recording and the specs on the drone camera says its recorded at 100mbps. So I can safely assume that increasing the Bitrate beyond that would produce no better quality. Thanks again.


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Emilio Le Roux
Re: What is the best Bitrate for UHD 4K encoding in H264?
on Apr 20, 2019 at 7:49:41 pm

Laughing out loud with this tread. And somehow sad wondering what has become of the world, when someone asks a simple question and gets just questions in response, until the thread turns into a fight.

If you believe in Adobe's presets, then I recommend doubling the bitrate of fullHD to get a similar quality. Since UHD is basically twice the size in pixels, you would be keeping the amount of information preserved in the file.


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Pat Horridge
Re: What is the best Bitrate for UHD 4K encoding in H264?
on Apr 20, 2019 at 7:56:03 pm

Actually UHD is twice the width and twice the height of Full HD so 4 times or quad HD.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online http://vimeo.com/channels/752951
pat@vet.co.uk



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Emilio Le Roux
Re: What is the best Bitrate for UHD 4K encoding in H264?
on Apr 21, 2019 at 2:56:21 am

Oh! of course, sorry.
So theoretically one would multiply bitrate by four to get about same quality, if compared to Full HD?


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Pat Horridge
Re: What is the best Bitrate for UHD 4K encoding in H264?
on Apr 21, 2019 at 8:57:00 am

And as you can't have interlaced UHD some UHD content is double framerate. 50P here in the UK for sport.
So 8 times the content.

That's why H265 is more suitable. Half the file size for the same quality.
But the maths don't quite work as a linear expiration for H264. You will find the codec becomes more efficient as the data rate goes up.
I'd experiment and then add 10% to what seems artefact free.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online http://vimeo.com/channels/752951
pat@vet.co.uk



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Laron Williams
Re: What is the best Bitrate for UHD 4K encoding in H264?
on Sep 18, 2019 at 2:31:11 am

I read that professionally they do 4K in a bitrate of 16000. Frame rate of 30, 50 or 60! Audio part I don’t know, but I put it on 48 from 44. When I burn mp3’s I use 48, it makes the sound more fuller


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