Show HN: I fixed FFmpeg's subtitle conversion (the bug from 2014)

37 points

1/21/1970

5 days ago

by slartibardfast0

Comments

gus_massa

Where is the source code? https://github.com/connollydavid/FFmpeg/tree/pgs3-8.0.1 ?

3 days ago

slartibardfast0

https://github.com/connollydavid/FFmpeg/tree/pgs7-8.1

is the most recent.

I'm taking a phased approach with an agentic host repo that drives the source changes in FFmpeg. generally, i do a "sprint" for adding features, then a sprint reorganizing for coherence with an eye on possible upstreaming.

21 hours ago

KomoD

Open since 2014? No? It was opened in 2014 and closed as fixed in 2014.

21 hours ago

slartibardfast0

mm, text to bitmap or vice-verse isn't there though is it?

edit: plus the blu-ray subtitle encoder itself is new...

21 hours ago

gjsman-1000

The fact that there is no newer bug ticket for it in 12 years shows is this a purely academic feature nobody wanted.

And why should they? Most Blu-ray players support the old format (SRT); converting it to PGS gains almost none of the upsides of the newer format (screen placement).

21 hours ago

slartibardfast0

certainly fades / karaoke style subtitles from Advanced SubStation Alpha on blu-ray devices aren't everyone's cup of tea.

but i do enjoy antialiased blu-ray subtitles of course YMMV :)

20 hours ago

gyan

If you do open PRs at code.ffmpeg.org, remember to disclose and describe the AI contribution. You will also need to add FATE tests.

a day ago

slartibardfast0

oh yes, every commit is fully open about Claude Code + the model.

honestly, it would've taken me about 2 years to do this otherwise.

there are many FATE tests added and a lot more to add when the hardware verification bits i'm planning are done.

edit: do you know if upstream have ever taken an AI assisted commit? i've not seen anything yet and would hate to be controversial or a burden on hardworking reviewers!

21 hours ago