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Anonymous105

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Join date
30-Dec-2015
Last activity
22-Apr-2024
Posts
8

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Post
#953572
Topic
Info: High Dynamic Range
Time

Everyone else pointed out some good stuff as well!

@ Spaced Ranger
In terms of encoding 8bit to 10bit and playing back 8bit, it really depends on the source and how far you are compressing. Encoding from the highest quality source is crucial. Other than the new 4k blu-rays, I’m not aware of any other high quality 10bit source available to the general public.

I tried to put together a quick comparison here from the movie Saving Private Ryan; granted, this movie is probably a worst-case scenario for good encoding at small file sizes, but still (45GB vs. 7.8GB) is not too bad. Most of my encodes are right around 2GB and still look extremely good compared to the blu-ray.
http://screenshotcomparison.com/comparison/175765
As well I hope you checked out the short x265 clip from DeSpecialized 2.7 in my last post.

The main benefit I see from encoding a blu-ray source (or other high quality source) to x265 10bit is the small file size while maintaining at least 90%, I’d say, of the original quality.

It also depends on whether the movie has a lot of action or whether the camera moves a lot, as well as similar colors throughout a scene.

I’ve learned a lot already just reading through this page.

Post
#953476
Topic
Info: High Dynamic Range
Time

HDR (high dynamic range) is basically when you shoot the same scene with 3 different shots; 1 at normal exposure, one at a lower exposure, and the third at a higher exposure. You would then combine them to get a picture with the highlights NOT blown out to white (think of the sky) and shadows dark but able to see fine detail. This is in terms of photography, not video.

In terms of video, and what is seen in new 4k HDR HDTVs, the major benefit is having less banding. HDR video is encoded with HEVC (or x265) on new 4k blu-rays at 10bit, instead of the normal 8bit.

8bit_vs_10bit

You can encode traditional 8bit video (current regular blu-rays) at x265 10bit and get very good compression while maintaining very high quality. I’ve been encoding some of my own personal blu-rays to x265 10bit and the results are quite good.

http://x264.nl/x264/10bit_02-ateme-why_does_10bit_save_bandwidth.pdf (PDF file)

Also, here is a short x265 10bit clip I did of the DeSpec 2.7. The original was around 185MB, this is only 35MB. VLC and MPC-HC can play this file.
https://drive.google.com/file/d/0B9tjpukbbRggZWdtdlhNNzduT0k/view?usp=sharing (MKV file @ 720p)

x265 10bit still has some trouble with maintaining grain, but there wasn’t a whole lot in the original v2.7.

As for encoders, I use Staxrip.

If someone else can offer more insight (and correct me if I’m wrong), that’d be great.
Hope this helps!

Post
#944731
Topic
Harmy's Despecialized Star Wars 1977 - Color Adjustment Project for v2.7 (released)
Time

If you really want a good quality 2GB encode, you might consider looking at x265 10bit.
I’ve done some blu-ray encodes with Staxrip x265 10bit right around the 2GB mark that look fantastic (takes longer to encode too, however).
Other downside would be lack of support for x265 on other devices; though if you’re just watching on a computer you’re fine.

Post
#891613
Topic
DESPECIALIZED EDITION <em>QUALITY CONTROL</em> THREAD - REPORT ISSUES HERE
Time

REPORT-SW-v2.5
00:03:31
The actor’s face appears too white, or bleached out. I’m not sure if this is how it is supposed to look or not. I watched the GOUT 2006 DVD and this scene appeared to have more natural skin tones, color wise. Was the GOUT 2006 DVD color-corrected further from the original?

Thanks, and keep up the great work!!!