Do you have an example of a good implementation of ai captions? I've only experienced those on youtube, and they are really bad. The automatic dubbing is even worse, but still.
On second thought this probably depends on the caption language.
On second thought this probably depends on the caption language.
Your point about the caption language is probably right though. It's worse with jargon or proper names, and worse with non-American English speakers. If we they don't even get right all the common accents of English, I have little hope for other languages.
The minimal grammatically correct sentence is simply a verb, and it's an exercise to the reader to know what the subject and object are expected to be. (Essentially, the more formal/polite you get, the more things are added. You could say "kore wa atsu desu" to mean "this is hot." But you could also just say "atsu," which could also be interpreted as a question instead of a statement.)
Chinese seems to have similar issues, but I know less about how it's structured.
Anyway, it's really nice when Japanese music on YouTube includes a human-provided translation as captions. Automated ones are useless, when it doesn't give up entirely.
It does seem to do a few clever things. For lyrics it seem to first look for existing transcribed lyrics before making their own guesses (Timing however can be quite bad when it does this). Outside of that, AI transcribed videos is like an alien who has read a book on a dead language and is transcribing based on what the book say that the word should sound like phonetically. At times that can be good enough.
(A note on sound quality. It not the perceived quality. Many low res videos has perfectly acceptable, if somewhat lossy sound quality, but the transcriber goes insane. It likes prefer 1080p videos with what I assume much higher bit-rate for the sound.)
and here's Jeff Geerling 15 months ago showing how to use Whisper to make dramatically better captions: https://www.youtube.com/watch?v=S1M9NOtusM8
I assume Google has finally put some of their multimodal LLM work to good use. Before that, they were embarrassingly bad.
For the most part, Whisper does much better than stuff I've tried in the past like Vosk. That said, it makes a somewhat annoying error that I never really experienced with others.
When the audio is low quality for a moment, it might misinterpret a word. That's fine, any speech recognition system will do that. The problem with Whisper is that the misinterpreted word can affect the next word, or several words. It's trying to align the next bits of audio syntactically with the mistaken word.
Older systems, you'd get a nonsense word where the noise was but the rest of the transcription would be unaffected. With Whisper, you may get a series of words that completely diverges from the audio. I can look at the start of the divergence and recognize the phonetic similarity that created the initial error. The following words may not be phonetically close to the audio at all.
You don't actually state whether you believe Parakeet is susceptible to the same class of mistakes...
I haven't seen those issues myself in my usage, it's just a suggestion, no need to be sarcastic about it.