there are 3 episodes in series 1 with audio commentaries, in 2 versions each

so i can save like 50 gigabytes by merging the commentary audio tracks as secondary tracks and discarding the extra copies of the video :P

anyway, no rush on that. should be straightforward fmpeggery when i get to it

seems to do the job

churning through now...

trying makemkvcon's firmware dump before attempting to flash the drive firmware, and it's just hanging

apparently this is a problem for the linux version of makemkv that others have seen :(

will attempt to resolve...

forum recommended downgrading to a known-good version for the firmware flash: eg makemkv 1.17.7

this runs and claims to be successful but when i reboot i'm on the same firmware so it's not taking

i may have the wrong images :D

claims to be ripping Ghost in the Shell (1995) in Ultra-HD now :D \o/

movie itself is 54 gigs, plus a few gigs of special features which I assume are in HD, we'll see later

Ultra-HD discs ship with video in HEVC, so they'll benefit the least from a potential re-encoding to AV1 for space savings despite being the largest space-takers because they ship four times as many pixels as HD :D

For MPEG-2, VC-1 and H.264 discs I can get much more significant space savings if I decide to re-encode them, but I have to deinterlace any 480i, 576i, or 1080i material.

Interestingly a lot of Blu-rays these days ship lossless audio tracks which are also quite large!

3.1G Ghost in the Shell (1995) - DVD.mkv

21G Ghost in the Shell (1995) - HD.mkv

51G Ghost in the Shell (1995) - Ultra HD.mkv

ah, moore's law

score! Infuse on the AppleTV actually plays back the original HDR HEVC, even if I enable subtitles

looks nice. is it worth an extra 51 gigabytes of disk space? maybe :D

and now back in the Ultra HD mines... :D

another HD/UHD pair:

25G Pitch Perfect 3 (2017) HD.mkv
56G Pitch Perfect 3 (2017) Ultra HD.mkv

the HD disc has an H.264 8-bit SDR video track at about 26 Mbps average, plus several audio tracks and subtitles

the Ultra HD disc has an HEVC 10-bit HDR video track at about 74 Mbps average, plus the same audio and subtitles

my rough mappings for experimental AV1 transcodes:

2 Mbps for 480p/480i/576p/576i <- from ~5 Mbps MPEG-2 on DVDs

12 Mbps for 1080p/1080i <- from ~24 Mbps H.264 on Blu-rays

60 Mbps for 2160p HDR <- from ~75 Mbps HEVC on Blu-rays

(for interlaced sources I have to deinterlace))

However I'm not certain my current AppleTV groks AV1 in hardware, I'm going to have to do some test runs before I commit to anything.

And I'm not committed to re-encoding in the first place still, just fiddling around.

Dark City Director's cut Ultra HD disc has *eleven* audio tracks:

* 7.1ch Dolby TrueHD + Dolby Atmos
* 5.1ch ac3
* 5.1ch DTS-HD MA
* 5.1ch DTS
* stereo DTS
* stereo ac3
* 5x stereo ac3 audio commentary tracks

and one English SDH subtitle track

@brooke wat

is the visual quality also better? ^^