HandBrake

Some screenshots of the original and the converted video would help anyway.

0 is lossless, but it's not rgb, it's 4:2:0 yuv. So if your source is rgb, it will be converted to 4:2:0 and some info will be lost.

Try use x265 10bit, you are using the 8bit version in your converted file.

Try use x265 10bit, you are using the 8bit version in your converted file.

No.

HandBrake Activity Log ***required***

That looks like an issue between AppleTV and TV. I have an AppleTV but not a 4k TV so I can't test it .

HandBrake can only create MKV, MP4 or Webm.

Modern encoders are smart enough, you don't need to lower the FPS to improve the compression of still images.

Once more, please post some screenshot of that video.

The encoder is already saying it can't do better quality than that. At such low resolution you have another issue: chroma subsampling. Video is in 4:2:0, it means there is only a color info each 4 pixels. So for example 1px red lines will look bad. See https://en.wikipedia.org/wiki/Chroma_subsamplin...

Moreover, you set the output size to 384 x 216 pixels. 384 x 216 will either look like a postage stamp or horrible if you zoom it to full screen.

Because the bitrate you chose is too high for the 384 x 216 resolution. There isn't enough data to use a 1000 Kbit/s

iTunes doesn't require M4V anymore.

For historically reasons. iTunes required it for ac3 and subtitles. There is as preferences to set it, but we should change the default back to "mp4" in the next version of HandBrake.

I'll make a test build for you in the next few days.

No, it doesn't. But Finder displays : as / because : used to be the file path separator on Mac OS 9. And Finder still has got this weird behaviour when displaying file names.

Subler can edit metadata in every mp4, the video codec doesn't matter.

You can set it manually in the "additional options" textfield (can't remember the exact syntax). The main issue is that HandBrake pipeline is 8bit, so the video will lose a lot of precision when transcoding it with HandBrake.

Subler https://subler.org

Yes, make your own preset with crop set to 0, and make it the default preset.

No, there isn't an "increased processor overhead in switching tasks". 1.3 runs some threads at normal priority instead of low. On my Mac the UI is still fully usable even when encoding, and the speed is the same as before.

Anyway, post the log from 1.2 and 1.3 and your computer specifications.

HandBrake can't convert to avi. Whatever you read is wrong.

Which version do you use on the other machines? 1.3 was the first version we shipped with the hardened runtime and sandbox.

HandBrake is built with the "hardened runtime", so it can load only libraries signed with a Developer ID certificate. Moreover, it's sandboxed too, and no one tested it with those libraries. You can try a nightly build, which has "hardened runtime" off, but I don't know if it will work with those li...