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Bitrate Question

newcbomb
By newcbomb
in Home Theater Equipment
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Posted

Say I have 2 Versions of a Movie, both HEVC

 

Version 1 is 1080p at 30mbps bitrate. 

Version 2 is 2160p at 20mbps bitrate. 

 

Isnt it true that the 1080p version will look better on a 4k screen?

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no, because upscaling also drops quality and that can't be compensated completely with higher bitrate. The quality of compression also matters.

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43 minutes ago, newcbomb said:

Say I have 2 Versions of a Movie, both HEVC

 

Version 1 is 1080p at 30mbps bitrate. 

Version 2 is 2160p at 20mbps bitrate. 

 

Isnt it true that the 1080p version will look better on a 4k screen?

In addition to what @Jurrunio there said, 30Mbps HEVC for 1080p is WAY overkill and just a waste of space, unless you're editing a video and using it as footage.

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On 1/20/2019 at 12:51 AM, WereCatf said:

In addition to what @Jurrunio there said, 30Mbps HEVC for 1080p is WAY overkill and just a waste of space, unless you're editing a video and using it as footage.

I was gonna say, even 30Mbps H.264 is edging on overkill. 1080p Blu-Ray's rarely stray over 30Mbps.

 

I'd swap those figures. ideally. 10 or 20 Mbps 1080p, and 30Mbps 4K.

 

Granted, I have little experience with HEVC, so I'm not familiar with the "sweet spots" in terms of quality vs bitrate.

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