This community discusses about making mkvs, but how do you know if an existing mkv has been upscaled somehow or if it is the native ripped format?
Is there a way to tell?
OT: How to tell if .mkv is upscaled or native format?
Re: OT: How to tell if .mkv is upscaled or native format?
Ultimately, there really is no definitive way to know.
Most if not all modern up scaled video uses temporal smoothing, so in theory you could collect the value of groups of pixels. When I was in college and still knew calculus I wrote a virtualdub filter for temporal smoothing and I noticed that it wouldn't be very hard to detected if temporal smoothing had been used. Of course, the problem is that some source content from studios already have it for restorative or creative effect (Fight Club DVD was one). So, any filtering could exist in the source already and of course the director of photography could of chose a not so sharp lens.
Very poor temporal smoothing algorithms will create black holes that you will see blip in and out of video (this is why I wrote my own, it's simply inexcusable). Overly aggressive sharpening effects can make edges glow or become busy/active similar to marching ants. Poorly adjusted lighting (from any filter) can cause chromatic aberrations or rainbows on walls.
Most if not all modern up scaled video uses temporal smoothing, so in theory you could collect the value of groups of pixels. When I was in college and still knew calculus I wrote a virtualdub filter for temporal smoothing and I noticed that it wouldn't be very hard to detected if temporal smoothing had been used. Of course, the problem is that some source content from studios already have it for restorative or creative effect (Fight Club DVD was one). So, any filtering could exist in the source already and of course the director of photography could of chose a not so sharp lens.
Very poor temporal smoothing algorithms will create black holes that you will see blip in and out of video (this is why I wrote my own, it's simply inexcusable). Overly aggressive sharpening effects can make edges glow or become busy/active similar to marching ants. Poorly adjusted lighting (from any filter) can cause chromatic aberrations or rainbows on walls.
Re: OT: How to tell if .mkv is upscaled or native format?
OMG! VirtualDUB!
It was my preferred player since it would quickly skip back and forward on the video track, not to mention the smoothless frame by frame playback.
Good memories!
Back to my question, I strongly suspect that many people out there are simply upscaling stuff just to gain credit.
It was my preferred player since it would quickly skip back and forward on the video track, not to mention the smoothless frame by frame playback.
Good memories!
Back to my question, I strongly suspect that many people out there are simply upscaling stuff just to gain credit.
Re: OT: How to tell if .mkv is upscaled or native format?
Your own MKVs from UHD will be for sure UHDs. Downloads you will never know. But there are guys these days that make better Regrades than the official released UHDs that are often also just upscales. Use your eyes if you have good equipment. On the other side you asked for the option to use Handbrake directly with Makemkv to shrink. You should decide what you want. Best quality or least space. I always go for best quality.Jango wrote: ↑Tue Dec 17, 2024 6:10 pmOMG! VirtualDUB!
It was my preferred player since it would quickly skip back and forward on the video track, not to mention the smoothless frame by frame playback.
Good memories!
Back to my question, I strongly suspect that many people out there are simply upscaling stuff just to gain credit.
Re: OT: How to tell if .mkv is upscaled or native format?
Thanks, Cooper.
I think it’s all about finding a good tradeoff. Unless you’re dealing with recent formats like UHD, it might be a solid choice to rip with MakeMKV and then compress with HandBrake. Using 10-bit H.265 with a Constant Quality RF of 22 delivers near-original quality with substantial size reduction. It’s a good compromise, considering that archiving 1080p content “for future use” might become pointless. In a few years, UHD will likely dominate content libraries, giving users another opportunity to re-rip their content in UHD format. I am currently ripping 1080p
I think it’s all about finding a good tradeoff. Unless you’re dealing with recent formats like UHD, it might be a solid choice to rip with MakeMKV and then compress with HandBrake. Using 10-bit H.265 with a Constant Quality RF of 22 delivers near-original quality with substantial size reduction. It’s a good compromise, considering that archiving 1080p content “for future use” might become pointless. In a few years, UHD will likely dominate content libraries, giving users another opportunity to re-rip their content in UHD format. I am currently ripping 1080p