cdgriffith
commented
3 years ago PGS subtitles are a pain in the butt because they are actually images and not text based like SRT. (So PLEX and other transcoders have to literally re-encode the video with another layer on top.)
Handbrake does the awesome thing of giving you that option to 'burn-in' a single subtitle track, which I think is the real first goal. Because even if you extracted the PSG subtitles, you would need a tool like Subtitle Edit to do OCR on the images to convert them to text.
If you look at the section "picture based subtitles" https://trac.ffmpeg.org/wiki/HowToBurnSubtitlesIntoVideo it gives a quick overview of how to do it. Currently not possible through FastFlix because it sets the map for the video track (and in this case you rename that mapping to "[v]"). So you could export the commands to the file, modify it and try it out if you want, but it is a more advanced and tricky thing to accomplish.
As this is a common feature and really really handy I do want this option as well. I am not sure how Handbrake is able to do the "Foreign language scan" stuff, but I will also look into that.
schlotkins
Hi Chris. I'm not sure if I am reading this correctly but it would be great to have the ability to include subtitles as SRT rather than pgs (https://trac.ffmpeg.org/wiki/ExtractSubtitles)
The reason behind this is I use Plex which I understand doesn't take kindly to pgs subtitles and therefore will automatically transcode them, however when a video is in 4k an error message is received that the server isn't powerful enough. Handbrake is able to complete this and I can then play videos with forced subtitles which doesn't work at the moment using fastflix (at least I don't know what command to enter to get the result I want and therefore a choice in the software would be great), however handbrake obviously has limitations around 10bit :)