All Forums > Tech Talk > Tech Talk Forum Page 9 > Question about JJV upscaling of 720p scenes
AuthorPost
Mister Fahrenheit All-Star Supporter
All-Star Member


Meh
4655 Posts
10/13
Posted - Dec 3 2015 : 7:14PM
Hey all, was wondering if you could help me out. All the scenes on JJV are available in 1080p but I'm pretty sure a lot of them were upscaled. Is there a degradation in quality when you upscale from 720p to 1080p? If there is, I'd like to stick to the original resolution of the scenes.
Jackie Treehorn
Member

It'll knock both your eyes out!
311 Posts
3/04
Posted - Dec 5 2015 : 10:10PM
A lot of the older titles that are "remastered in HD" are nothing more than 480p images being upscaled to 1080p. To make matters worse the 480p classic stuff was shot in the standard 4:3 aspect ratio but has been re-framed at 16:9, meaning either image is being cropped off the top and bottom or the image is being stretched out causing some distortion. Basically no improvement, but being 1080p means you need to download much bigger files. I know some people have been pleased with these "remasters" but I think they see the 1080p number and the HD logo and just assume it's an improvement.
Mister Fahrenheit All-Star Supporter
All-Star Member

Meh
4655 Posts
10/13
Posted - Dec 5 2015 : 10:32PM
^ Yeah, I'm well aware of the issues with the older 480p scenes. What's sad is that they didn't even preserve the original versions for the standard definition download option. Even when you download the SD versions those too have been warped from 4:3 to 6:9. JJV has completely butchered their back catalog.
So I know to avoid the old vids that have been upscaled from 4:3 480p entirely. What I want to know though, is there a similar downgrade in quality when you upconvert a scene from 720p to 1080p? For example, Jenna Haze Darkside was released on DVD with a label that simply said, "Shot in HD." What does that mean exactly? Was 720p the upper limit on HD back in 2006 when it was released? Does that mean that they converted that too to 1080p after the fact? I wish there was more transparency on the JJV site for when they made the respective transitions from 480p to 720p to 1080.
Goldstein All-Star Supporter
All-Star Member

"You have sacrificed nothing and no one."
3689 Posts
8/10
Posted - Dec 6 2015 : 7:16PM
My experience has been that when you "upconvert" (I'm assuming you you mean re-encoding an actual 720p file to 1080p) there is a noticeable (slight) loss of clarity and definition.
They're both 16x9, so that's not an issue.
Through experience, I have also found that a quality 720p file looks just fine (both on my monitor and on my 32" flat-screen TV).
I think its entirely possible that the originals were actually shot in 1080p (which I realize is your question and not being able to know your frustration).
I suspect that the scenes being originally released in 720p on the Internet had more to do with saving bandwidth and giving the illusion of faster download speeds to customers?
In any event, when I do my editing, I leave the frame-rate at whatever the original is (for some reason 24 fps is becoming more commonplace), otherwise you begin to notice artifacts in your edits (particularly when you create slo-motion edits of cumshots, for example) that don't manifest when you leave the frame-rate the same as the original file.
I'm thinking that all the 4k stuff is being shot at 24 fps, and that they maintain that frame-rate for all the lower resolution downloads made available.
Also, I leave the image size the same (i.e. I leave a 720p file the same size and don't try to increase it to 192 hex 1080).
Again, artifacts and loss of clarity issues.
One thing I will do is up my bit-rates on my edits.
So, for example, when I edit a Brazzers 12,000 bit-rate scene, I bump the edits to 16,000.
My experience has been that all the older 64 hex 480 stuff looks its best left alone at 64 hex 480.
Any up-scaling just fucks it up.
So, on my TV, for example, I do not allow 64 hex 480 to be blown-up to fill the screen.
I watch these scenes, as original, in the slightly smaller window they appear in, and enjoy the vastly superior images that the original scaling maintains.
I hate -- hate -- the distorted images that blowing up 4:3 to 16:9 creates!
daviangel
Member

Only time I would buy a girl flowers is if she was in the hospital
455 Posts
1/04
Posted - Dec 6 2015 : 9:03PM
Yeah at least some sites like DDG network I noticed are remastering most of their scenes to smaller file sizes without any noticeable loss of quality but this is staying at same resolution and not upscaling.
Personally, don't why JJV upscales to 1080 making their files sizes among some of the bigger of any site I've joined. Maybe it's for people that watch on TV or their devices display and don't want the black bars on the edges? And they don't look any better since you are losing quality going up if original material wasn't shot at 1080.
Playboy also has been remastering some of their older video to 1080p and they seem to do it right. It's hard to tell right away when the original video footage was shot on film because it looks as sharp and clear at 1080 as if it was shot with a HD videocamera not long ago!
 
Jackie Treehorn
Member

It'll knock both your eyes out!
311 Posts
3/04
Posted - Dec 6 2015 : 11:02PM
My guess would be that the 720p titles being remastered are probably true 1080p. I'm not 100% certain but it seems video camera equipment jumped from 480i/p to 1080p. The 720p releases were probably downscaled from a master 1080p source at the time to create smaller video files for download. Kind of like how some title are now being shot in 4k but still only being released in 1080p or lower.
I wouldn't be surprised if part of the reason they upscale old 480p stuff to 1080p, is because many review sites will subtract points from their total score if a site doesn't have all of their scenes in HD, or list that as a con in the pros and cons section at the end of the review. It's stupid but many reviewers at sites like Rabbit reviews and so on, often don't seem to understand that videos from a dozen years ago gain nothing from being 1080p
Here is a comment in an Evil Angel review http://www.thebestporn.com/review/evilangel/
All Forums > Tech Talk > Tech Talk Forum Page 9Question about JJV upscaling of 720p scenes

Previous topic: I needed a proxy to reach this site
Next topic: Elegant angel downloads



Jump To: