[ToshY] New Game! Batch (BDRip 1920x1080 FLAC)

Improved/synced subs using only Doki’s manga tracks.

Source

• [Nano desu] New Game! - All Series [BD Batch]

Changelog

• Removed anime subtitle track; only keep manga track.
• New Game!
  • E.04 (23:10): This arm flab didn't used to be here -> This arm flab didn't use to be here
  • E.10 (10:47): Haduki -> Hazuki
• New Game! OVA
  • 04:02/04:12: Sign placement/colors
  • 03:10: without problem -> without a problem
• New Game!!
  • E.01, E3 - E.12: -1 frame timing offset
  • E.06
    • Doki video has 1 more starting frame compared to new video source, which after frame 1396-1397 straightens out again.
      • shift +1 frame
    • Frame shift after starting frame 2925; shift +3 frames
    • Frame shift after starting frame 9222; shift +1 frame
  • E.03 - E.12:
    • Timeline shifting (see remarks below); E.03 - E08, E.11 - E.12
    • Name changes (E.01 - E.02 already had manga track from here):
      • Ko -> Kou
      • Hazime -> Hajime
      • Haduki -> Hazuki
      • Iizima -> Iijima

“I just want the subs”

Timeline shifting notes
I’ve been breaking my head why the second season had such weird timings in Nano’s release, as it seemed at several points the subs were getting gradually getting out of sync. So doing only a frame offset wasn’t going to help. It was either a lot of manual work or figure out the root cause. I hate doing things manually, so took the second approach.
What seems to have happened is Doki’s release had subtitles synced to video with a framerate of 23.977 (“normally” would be 23.976). So while it’s only a difference of 0.001, this seems to have a sort of drifting effect where the subtitles get gradually out-of-sync (while initially seeming in-sync). It also doesn’t really help that despite this, other people (unaware of the problem) tried to manual retime the signs/dialogue of Doki anyway on their own releases. Anyway, after a bit of searching I found this older cli tool subsync, for which I created a docker image, and ran it with a scale option on Doki’s original subtitles (from 720p release) for episodes 2-8, 11-12 (episode 1 and 2 were already timed in this release with a normal framerate, and for some fucking reason 9 and 10 as well). After that it was an additional -1 frame offset and (mostly) everything was synced.
Note to self (and others): if you remux subtitles, make sure first that the video source of the subtitles you want to remux onto your new video source match in framerate.

FFmpeg notes
As I test most subtitles by hardcoding with FFmpeg, I’ve noticed for the first time that certain signs containing tags like \fr{x,y,z} got disfigured after hardcoding.
So I’ve found out that FFmpeg doesn’t handle this shit well when you’ve got subtitles from a source (1280x720) with a video resolution different from your new source (1920x1080), as it seems to prioritize video resolution over PlayRes{X,Y} properties by default. And most of the time this wouldn’t hurt, unless you’re doing this for sign heavy subtitles that use tags that don’t let them self resampled easily like in this case. To mitigate that, I’ve added LayoutRes{X,Y} properties (see libass PR 641) in the script info header for episodes 3-12 (tested with ffmpeg n5.1.3-16-g566aa38d98-20230813), but you can also choose to use original_size:hd720 on your subtitles filter complex instead. Your pick.

OP notes
A hellish debug adventure; too many hours; never again.