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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.

-----------------------------------------------
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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Dave LaRonde
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 11, 2018 at 4:27:10 pm

Here are other pertinent questions --
How is this file going to be played back?
What kind of device is it -- what are its technical limitations?
Do you have delivery specifications for this project?

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 11, 2018 at 5:26:56 pm

Ok, I think this topic has gotten a bit side railed... probably because I didn't word the question properly...

I shot footage on a Phantom 4 Pro Drone... in UHD 4K Resolution.

I brought this into Premiere Pro and would like to export the edited video in UHD 4K in the H.264 codec and mp4 container, without losing any resolution from the original encoding of the native footage. What bitrate would I select in order to achieve this? There must be a Bitrate threshold that gives you the maximum quality without just making the file sizes unnecessarily huge? yes/no?


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Dave LaRonde
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 11, 2018 at 6:07:46 pm

[Devinda Fernando] "....I think this topic has gotten a bit side railed..."

I disagree. You haven't yet clearly stated what you are going to DO with the file.
We don't know its intended purpose.... which is a very important consideration.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Pat Horridge
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 12, 2018 at 8:48:33 am

You can only compare output datartar to input if the codec is the same.
But as pointed out by others bumping up the output data rate too high will produce a file that is difficult or impossible to playback.
Hence the questions on what device will playback the file and what are it's technical limits.
That has to be the starting point.
If that device can cope with say 200mbps you then need to decide if that data rate is needed.
Do an enode at that data rate. Then try one 200mbps lower and compare quality. Repeat going ever lower. When you see a quality drop go back up one or 2 steps.

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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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 2:36:08 am

Thanks Pat, I think that answers it. I actually wanted to make sure I didn't Lose any quality from the originally recorded footage on the output. I just checked and saw that the Original footage was encoded at H.264 100Mbps - so as you said, there's no point exporting this higher than the original since there would be no additional quality gain. Cheers for your time.


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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 2:32:42 am

*** I disagree. You haven't yet clearly stated what you are going to DO with the file.
We don't know its intended purpose.... which is a very important consideration. ***

you know David... I now remember the reason I stopped asking questions at Creative Cow... Because there's never a SHORTAGE of SMUG & BUMPTIOUS characters like you who try to be vaguely confrontational with their responses, but only come off as IRRITATING. 👍👍


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Ole Kristiansen
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 7:27:49 am

"How is this file going to be played back?"

Why is that secret ? This is a very important question !


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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 7:42:29 am

*** Why is that secret ? This is a very important question ! ***

Its not a SECRET... I already said so above... Perhaps you should try READING the THREAD first without asking DUMB and POINTLESS QUESTIONS... 😉


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Ole Kristiansen
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 7:50:46 am

The only pointless questions came from you little Devinda !

"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)"


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Ole Kristiansen
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 8:04:51 am

I will ask one more pointless question !

How will you playback you file uhd on a 52 Inch OLED Monitor or something of similar High End Picture quality. ?


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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 8:22:25 am

*** How will you playback you file uhd on a 52 Inch OLED Monitor or something of similar High End Picture quality. ? ***

Since I had my question already answered to my satisfaction by the ADULTS in the room, I would tell you not to worry your SMALL BRAIN any further, and go back to being an IGNORAMUS in the real world... 👍


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Ole Kristiansen
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 8:27:34 am

"Since I had my question already answered to my satisfaction by the ADULTS in the room, I would tell you not to worry your SMALL BRAIN any further, and go back to being an IGNORAMUS in the real world... 👍"

My small brain !

Think that's the way you treat people in here - who just want to help others!


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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 9:14:11 am

***
Think that's the way you treat people in here - who just want to help others! ***

Well, you were NO HELP at all... just snarky and annoying. Perhaps you should occupy yourself with some other pasttime than trying to be an "Online Subject matter Helper"...?


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Ole Kristiansen
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 9:27:28 am

Have just read one of your questions here on Creativ Cow:

So does 25fps(PAL) actually record at 25Fps or is it also 24.9 something like the rest?

Now, people can even decide who is asking DUMB and POINTLESS QUESTIONS... 😉


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Dave LaRonde
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 4:51:24 pm

29.97 fps is a leftover from NTSC. In Days Of Yore, NTSC was 30 fps, one-half of North America's frequency for alternating current -- in Europe, it is 50 Hz... thus, PAL/SECAM/etc. were 25fps.

In 1953, when color TV came about in the USA, the nature of the NTSC signal demanded that there be a tiny bit more information to make color. But there was a hard restriction on the analog frequency bandwidth. Something had to give. So it was the fame rate -- it changed from 30 to 29.97.

Europe didn't have this problem. So the frame rate remains 25 fps to this day.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Devinda Fernando
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 8:17:19 am

*** The only pointless questions came from you little Devinda ! ***

LOL! Oh so you're DUMB and BLIND too...? I guess you missed the second posting about the 52 in OLED screen...


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Dave LaRonde
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 13, 2018 at 6:16:24 pm

As has been written in this thread, it's not just the display device that must be taken into consideration. It's also the playback device. You revealed just one.

That's okay, you'll learn.....

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Ole Kristiansen
Re: What is the best Bitrate for UHD 4K encoding in H264?
on May 14, 2018 at 11:49:23 am

No need to spent more time on that smart ass !


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