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Old 04-21-2020, 12:57 AM   #1
Krimreaper Krimreaper is offline
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Default 4K stream vs Blu-Ray disc

How does a good quality 4K stream, such as from Apple TV vs a Blu-ray Disc compare on average as far as compression and bit rate?
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Old 04-21-2020, 01:21 AM   #2
solarrdadd solarrdadd is online now
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Old 04-21-2020, 03:08 AM   #3
alchav21 alchav21 is offline
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Quote:
Originally Posted by Krimreaper View Post
How does a good quality 4K stream, such as from Apple TV vs a Blu-ray Disc compare on average as far as compression and bit rate?
Streaming has come a long way, but you have to try it for your self and see how it compares with your setup. The Average Bitrate for a BD is 20Mbps, and 4K Streams are 25Mbps, but iTunes have been recorded around 30Mbps. With my setup IMO HD Streaming compares to BD, with 4K Streaming looking better. You just have to try it out for yourself and see how it looks to you.
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Old 04-21-2020, 04:11 AM   #4
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Quote:
Originally Posted by alchav21 View Post
Streaming has come a long way, but you have to try it for your self and see how it compares with your setup. The Average Bitrate for a BD is 20Mbps, and 4K Streams are 25Mbps, but iTunes have been recorded around 30Mbps. With my setup IMO HD Streaming compares to BD, with 4K Streaming looking better. You just have to try it out for yourself and see how it looks to you.
Just as a FYI, HD SDR BD plays at a combined bitrate of 20 to 40 Mbps, while a 4K UHD BD plays usually 50 to a bit above 100 Mbps. This average streaming rate you have 4K streaming occur is the best it can do.

A 4K iTunes streaming at 25 Mbps or 30 Mbps is going to show artifacts in very dark or very bright scenes where a 4K UHD BD wonít. Even comparing HD streaming versus HD BD is quite a difference. Some might be happy enough with that.

I remember watching the Croods on Netflix in HD, then got the BD and wow the colors and contrast was so much better comparably.
Yeah animation is a good test. Watching Despicable 4K on ITunes, versus from ones UHD BD also shows the improvement.

But yeah saw this question and thought itís a bit mismatched, but itís best to do your own comparisons!
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Old 04-21-2020, 04:30 AM   #5
JohnAV JohnAV is online now
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This might help also

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Old 04-21-2020, 04:14 PM   #6
Wendell R. Breland Wendell R. Breland is offline
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Quote:
Originally Posted by Krimreaper View Post
How does a good quality 4K stream, such as from Apple TV vs a Blu-ray Disc compare on average as far as compression and bit rate?
This has been covered ad nauseam for video.

On the audio side both Blu-ray and UHD Blu-ray offer high bit rate lossless (Dolby and DTS) on most titles and will average between 3 to 5 Mbps with peaks sometimes hitting 10 to 15 Mbps. Most streaming is done in lossy Dolby Digital + at 192 Kbps. Some streaming titles with Dolby Digital+ Atmos will have 384 or 448 Kbps.

3-D: Blu-ray use frame packed 3-D (full resolution both eyes) while streaming uses SbS or ToB (either Ĺ V resolution or Ĺ H resolution).

Ownership: Disc are cover by the First Sale Doctrine, streaming titles are not. Strongly suggest you read the TOS/EULA of each provider and each content owner (studios).

Apple 4K TV: If you watch anything other than 23.976 fps you may want to read thru this AVS thread.

From an email from Vudu to me this day:
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This email is a Vudu service message.
Please note that all product prices and availability are subject to change.
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Old 04-21-2020, 06:33 PM   #7
stonesfan129 stonesfan129 is offline
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Compared to a standard Blu-ray? Well for one, 2160p vs 1080p. Compared to a 4K Blu-ray, the disc has much higher bitrate and lossless audio compared to the stream. If you care how it looks and sounds, get the disc. The real benefit to streaming isn't the quality, it's the convenience.
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Old 05-08-2020, 09:43 PM   #8
pirateman1650 pirateman1650 is offline
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Anything being streamed is going to be of lesser quality than physical media because of lower bitrates which means less color definition, and a softer image. So physical disc media will always look better. Although I have found a way to midigate some of the problems with streaming. I found a solution to enhancing my streams a bit. How? Let's start from what I stated in the beginning. A compressed image is going to be duller ,more washed out, and softer, right? So if we use some of the picture settings on our TV in the right way, we can fix some of these issues. So start with the color to 50 and slowly increase it until the image retains a little more vibrancy, while making sure skin tones still look natural. Remember, the image is washed out already so boosting the color slightly will not effect image quality as long as the colors aren't bleeding or overly saturated. I have mine set to 54 out of 100. Now we deal with the softness. Take the sharpness tool, starting from 0 and slowly increase it until the image is clean and crisp, but not overly sharpened (we don't want to add to many extra artifacts!). All we are trying to do is bring the sharpness up to the correct amount. For example mine is set to 3 out of 100. So if we keep the setting low we minimize extra artifacts. You may also use noise reduction set to low. So how do you test this. You compare it to the Blu-ray. You play both the stream and then the Blu-ray on the same scene, then adjust the picture accordingly until the stream looks as close to the bluray as possible. Make sure you use a different video mode other than cinema when adjusting the stream and Cinema mode when watching the bluray. When you like what you've done save and name the video mode. I named my Stream. You might be surprised by the results! It won't be exact, but it will look much better than before and be more pleasing to the eye.
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