Adventures with ffmpeg and color ranges
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Adventures with ffmpeg and color ranges
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Re: Adventures with ffmpeg and color ranges
#2Interesting find.
I have encoded video for over a decade, and I don't think a two month period has gone by where I haven't learned something that convinces me to completely change how or what flags I'm using.
This is way beyond that but still.
Re: Adventures with ffmpeg and color ranges
#3Its weird to think how John Carmack went from .plan files to Facebook Posts. I think it might be safe to say he had the most widely read .plan file in existence. Wish he would go back to it.
Re: Adventures with ffmpeg and color ranges
#4Its weird to think how John Carmack went from .plan files to Facebook Posts. I think it might be safe to say he had the most widely read .plan file in existence. Wish he would go back to it.
I suspect it’s not his decision to make.
Re: Adventures with ffmpeg and color ranges
#5Funnily enough, I actually ended up giving myself a crash course in this very topic when encoding frag movies for Quake 3/Quake Live. It was/is common practice to use 'brightskins' on your enemy models in competitive play to make them easier to see, typically being a colour like '#00FF00'.
I noticed that when uploading to online media hosting sites like Youtube these bright colours would become noticeably washed out and degraded. My investigation of why this happened led me all the way down this rabbit hole. This was the better half of ten years ago now so I have no idea if it still occurs, but I ended up just rendering the videos using a better brightskin colour that appeared less degraded after conversion... Going through the cycle of 'rerender/reupload/check' to find a replacement colour again and again to experiment sure was a major pain!
Re: Adventures with ffmpeg and color ranges
#6Its weird to think how John Carmack went from .plan files to Facebook Posts. I think it might be safe to say he had the most widely read .plan file in existence. Wish he would go back to it.
Yes I wondered this also. It is naturally to use his employers platform. However I wonder if in 10-15 years this post will be lost in Facebook changes, but the .plan files from the 1990s will still be available somewhere.
Re: Adventures with ffmpeg and color ranges
#7> This is usually visible as ugly banding or blocking in dark scenes.
I was just complaining about this a couple weeks ago with some friends after the “Dark” episode of GoT. I was saying the codecs don’t seem to have caught up or they are just being fed at too low a bit rate to really excel at dark scenes.
It’s hard to imagine this is just a scaling issue with the color ranges, and if so, how could it possibly not have been fixed?!
I have a high end OLED screen in a very dark room, and I was very disappointed by the picture quality. Enough to wish I hadn’t watched it through HBO Go and that I had a better source.
I would love to see some before/after scenes showing the effect of the patch.
Re: Adventures with ffmpeg and color ranges
#8Its weird to think how John Carmack went from .plan files to Facebook Posts. I think it might be safe to say he had the most widely read .plan file in existence. Wish he would go back to it.
I suspect it’s not his decision to make.
You think someone is telling Carmack where he can and can't post? Why one earth would they do that? And why on earth would he put up with it?
Re: Adventures with ffmpeg and color ranges
#9Its weird to think how John Carmack went from .plan files to Facebook Posts. I think it might be safe to say he had the most widely read .plan file in existence. Wish he would go back to it.
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Re: Adventures with ffmpeg and color ranges
#10Its weird to think how John Carmack went from .plan files to Facebook Posts. I think it might be safe to say he had the most widely read .plan file in existence. Wish he would go back to it.
I suspect it’s not his decision to make.
That's totally absurd. Luminaries like Carmack are anything but prisoners; any firm in SV would pay big bucks to say "John Carmack works here".
Facebook may be a big conglomerate these days, and they may not be the cool kid on the block anymore, but that doesn't mean that they're idiots. If anything, they treasure the presence of someone like Carmack all the more, because it's no longer reputionally-free for people like him to come on board. I'm sure that Facebook is appreciative when he blogs on their platform, but it's patently ridiculous to pretend that anyone would -- or could -- force it.
In fact, Facebook has already been forced to pay at least dozens of millions of dollars essentially as a direct consequence of employing Carmack [0], and I'd be willing to bet they'd happily pay (at least) dozens of millions more.
If you want your mind blown even harder, look up some of the paperwork around the Waymo / Uber debacle [1]. SV companies pay big bucks for this type of talent, even the ones you haven't heard of, like Anthony Levandowski.
If the roll of the dice is in your favor, SV stardom is at least as valuable as Hollywood stardom (and, for the most part anyway, you still get to walk around in public unharrassed).
Disclaimer: I have no special connection with any of the companies or people mentioned, I don't know the inside baseball, and this is all conjecture. But at least it's better supported than yours. ;)
[0] https://en.wikipedia.org/wiki/ZeniMax_v._Oculus
[1] https://www.cnbc.com/2017/04/03/waymos-uber-lawsuit-reveals-...