Encoding Discussion Megathread (ffmpeg, Handbrake, AV1, etc...)

[grunt]

handbrake is a the same way, there is a lot of BS it outputs as well in regards to what its up to but sometimes is nice to see what its up to.

I want to do some upgrades to that script (specific file detection, ouput location logic etc) but thats time I dont have right now lol

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Feel you. Time is a precious commodity. I generally steal a few minutes of my day to answer some questions here in between other crap in my day because it's entertaining and enriching. I almost always learn something.

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Okay, now I have a question to ask that I could probably figure out, but we have a brain trust going here.

If I wanted to combine our thoughts here and write a script that say...

• Descended into a directory and all (or specific) subdirectories,
  
• Located all files of a specific extension (or "media" files, to keep ffmpeg happy),
  
• Returned some information on those files (e.g., chapter information for TDP, I'm interested in reducing multi-language tracks),
  
• Made a decision based on that returned information of how to proceed,
  
• Encoded based on that decision.
  

We'd almost have a program on our hands. I mean writing the complexities of user input and such isn't that difficult, it's figuring out the weird behaviors and edge cases, but really this is kind of cool that with three people we pretty much put together a very rough outline for a program that would cover minifying media for children/spouses, carefully logging + splitting + encoding + deinterlacing remuxes, and size reduction through codec modernization and language track stripping all in batch form with different tools and unique but convergent approaches.

This is why I love this world. It's all so cool to learn new tricks and how people approach things. If anybody would be interested in collaborating on something -- a script to start -- that would fit the bill above, open source of course, I'd be happy to try and git my shit together enough to contribute some time and energy to developing and testing alongside somebody else (yeah, I suck at Github, that's the joke). Who knows? Maybe someone else would find it useful. While I'm at it, these are really old, but I forgot that I created a Hanbrake batch encode script WAY back when I was journeying into ripping my DVD library on my Github. It's likely garbage compared to what I can put together now, but I also did a lot of dev work at that point, so it's more organized and actually commented...

[grunt]

the complications are unreal., this script alone I use to fix DolbyVision files on for my appleTV is crazy big

https://github.com/nekno/DV7toDV8

I didnt write that, but I like your thinking, just making something that converts everything to a "modern and efficient" way would be unreal hard to do lol

I should maybe start my own GitHub and start putting things on there, but again, laziness and time. Movie/tv collection is a hobby for me and so is scripting to make it work the way I want. Like you, I do it when I have moments to spare (usually when im slacking at work, working from home helps lol). Dog and a newborn are time killers, barely have time to game, which is my fave hobby lol

Dont have kids... lol

[TheDreadPirate]

the complications are unreal., this script alone I use to fix DolbyVision files on for my appleTV is crazy big

https://github.com/nekno/DV7toDV8

I didnt write that, but I like your thinking, just making something that converts everything to a "modern and efficient" way would be unreal hard to do lol

I should maybe start my own GitHub and start putting things on there, but again, laziness and time. Movie/tv collection is a hobby for me and so is scripting to make it work the way I want. Like you, I do it when I have moments to spare (usually when im slacking at work, working from home helps lol). Dog and a newborn are time killers, barely have time to game, which is my fave hobby lol

Dont have kids... lol

I'm dealing with my first 4K HDR video.  How do I convert it from Dolby Vision 7.6 to the more compatible DV 8.X.  My phone (Pixel 6a) will try to direct play it, but the video is blank.

Does something like this exist on Linux?  dovi_tool I think I read about somewhere.

[grunt]

the complications are unreal., this script alone I use to fix DolbyVision files on for my appleTV is crazy big

https://github.com/nekno/DV7toDV8

I didnt write that, but I like your thinking, just making something that converts everything to a "modern and efficient" way would be unreal hard to do lol

I should maybe start my own GitHub and start putting things on there, but again, laziness and time. Movie/tv collection is a hobby for me and so is scripting to make it work the way I want. Like you, I do it when I have moments to spare (usually when im slacking at work, working from home helps lol). Dog and a newborn are time killers, barely have time to game, which is my fave hobby lol

Dont have kids... lol

I'm dealing with my first 4K HDR video.  How do I convert it from Dolby Vision 7.6 to the more compatible DV 8.X.  My phone (Pixel 6a) will try to direct play it, but the video is blank.

Does something like this exist on Linux?  dovi_tool I think I read about somewhere.

that above script uses dovi_tool

I am sure since it works on OSX it wouldn't be too difficult to convert it to a working *unix bash script. That script actually originated from a windows script found here

https://community.firecore.com/t/dolby-v.../19713/846

If you want a complete mind fuck of a discussion of how complicated Dolby Vision is, go through the above.

The reason I use the DV7 to DV8 script is because some DV8 (hybrid files) can come in two profiles (CMv2.9 and CMv4.0) and the Apple TV (via infuse) only supports CMv4.0 properly on the latest Apple TV hardware (gen 3). This script will fix that issue as well as convert profile 7 to 8. Nothing other than blu ray players should support profile 7 (some android boxes out there do, and I think the latest shield pro, but could be wrong)

Funny thing is though, Apple TV 4K gen 2 and 1 can play most if not all CMv2.9 files, while gen 3 can't. SOOOOO annoying, as I have 2 gen 2s in my house, and 1 gen 3, but unfortunately the main viewing TV has the gen 3 Apple TV.

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I honestly gotta ask...can you tell the difference between DV and good HDR10? I can't. I've stopped opting for DV anymore, especially since I've been converting to AV1 since there's no DV support on that front yet. Just seems like a lot of work for something that really doesn't make much difference IMO.

[TheDreadPirate]

Can ffmpeg convert DV to HDR10/+? If so, F Dolby Vision for exactly that reason. For the record, I do not have any HDR capable displays in my possession.

Another weird issue is that crop detect WILL NOT crop this video, which is 21:9. Does that have something to do with HDR?

But I did find out that the Android Jellyfin app does zoom to fill.

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That's beyond where I'm at, but exactly where I'm going next. I have a lot of DV content because I got an LGC1 and wanted to see what the craze was about. All smoke, no fire IMO. Since AV1 doesn't support DV and I'm looking to convert, I need to figure out how to get from one to the other, either by dropping DV metadata and promoting HDR10+ or PQ to the top slot or converting the DV metadata to HDR/10/+.

As for cropdetect and HDR or ultra-wide, I'm not sure. I don't think I have any analogous content to test with...

[grunt]

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I honestly gotta ask...can you tell the difference between DV and good HDR10? I can't. I've stopped opting for DV anymore, especially since I've been converting to AV1 since there's no DV support on that front yet. Just seems like a lot of work for something that really doesn't make much difference IMO.

It all bias I guess but I definitely do. It probably also depends on your tv. The difference to me between DV and hdr10 is pretty big. 

Apple TV next update coming out next month will have native profile 8 support which would make it up there as the best DV device. It supports hdr10+ as well (the latest Gen) if you’re a Samsung person. 

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Can ffmpeg convert DV to HDR10/+?  If so, F Dolby Vision for exactly that reason.  For the record, I do not have any HDR capable displays in my possession.

Another weird issue is that crop detect WILL NOT crop this video, which is 21:9.  Does that have something to do with HDR?

But I did find out that the Android Jellyfin app does zoom to fill.

No it can’t ad of right now but I think I mentioned before hdr10+ can be converted to DV.

DV has won the colour space battle. Only Samsung and I think Amazon is still championing it but even Amazon supports and makes content in DV now. AV1 needs to figure it out before I personally care.