Allow for copying line from right hand side to left hand side (or vice versa) in the Compare Subtitles window.

[Dragoonstorm1]

A great use for this is correcting Bluray PGS/SUP OCR'd files using existing perfected WEB-DL subs.

So I open the PGS and run OCR, and have my synced-to-bluray srt. I load up the WEB-DL using File>Compare

Clearly the work is already done, even the software knows where the changes are. If only I could press alt+enter per line in this screen to approve corrections from an existing SRT, things would be so simple.
Also even better if a single button to transfer all changes over.

Now all this is an easy implementation considering srt's of exactly the same number of lines (and line-breaks) which is a lucky moment in this case. (So what I did was open both in Aegisubs, copy all lines from WEB-DL, go to the bluray srt, and paste-over>text only.)

But in case there are changes in line positions or an added break, I don't know how the compare tool currently figures those things out but I suspect it is already powerful enough to detect that, and so would make this subtitle edit tool a much more useful tool in the long run in the case of line number mismatches.

[Dragoonstorm1]

Actually, I have an example where a line-break changes the line numbers of lines to be matched and current Compare Subtitles is not capable of detecting transpose, I suppose that could be an additional feature request.
But a much more complicated thing to tackle.

[darnn]

The compare window isn't really the place to do this, IMHO. If I have one subtitle file with accurate timing and one with accurate text, I open the one with accurate timing, use Tools->Make new empty translation from current subtitle, copy the contents of the file with accurate text, and paste it into the translation column using Column paste (text only and overwrite). Then I move things around as needed using keyboard shortcuts, mainly: Column, delete text and shift up, Column, insert text, Move last word to next subtitle and Fetch first word from next subtitle.
You might also want to try WhisperTimeSync.jar here:
https://github.com/EtienneAb3d/WhisperTimeSync/?tab=readme-ov-file#synchronize
Though if you do, you first need to split your files into ~800 subtitle chunks, since it fails to produce any output for anything much larger. You can also try the Python version:
https://github.com/EtienneAb3d/SRT-Sync
But if you do, make sure to comment out print(f"{t1}\t{t2}") at line 32 in CbxAligner.py.

[Dragoonstorm1]

The compare window isn't really the place to do this, IMHO. If I have one subtitle file with accurate timing and one with accurate text, I open the one with accurate timing, use Tools->Make new empty translation from current subtitle, copy the contents of the file with accurate text, and paste it into the translation column using Column paste (text only and overwrite). Then I move things around as needed using keyboard shortcuts, mainly: Column, delete text and shift up, Column, insert text, Move last word to next subtitle and Fetch first word from next subtitle.

Okay, that is the good stuff, thank you.
I had a hard time figuring out how to "approve" the new "translation" into the final subtitle file though.

I have tried copying all and pasting in the right side column but nothing happens.
At first I thought that it must be selecting the wrong column in the first place to copy to clipboard.
But selecting all > right click > Copy as text to clipboard and pasting in external notepad shows that it IS the corrected translation in clipboard.
Pasting in "Original text" column actually seems to paste right back into "Text" column even if I right click the Original column.
I DO have Settings>General>Allow edit of original subtitle checked too.

Ah finally, Options>Shortcuts>General>Switch original and translation worked

This all just needs so much more clarity.