Yeah, I dont envy your position. I don’t think there is a way for you to know without sending the phone off, but if it’s been weeks then perhaps it is too late. Sometimes bad people get away with doing bad things.
I personally would chalk it up as a learning experience, and use your experience to sell the ACLU app to your friends and family.
For visibility: https://www.aclu.org/issues/criminal-law-reform/reforming-police/mobile-justice - If this is a situation you (or anyone you know) could end up in, this app may be a game changer. It streams the video to your friends and the ACLU, so nothing can be edited afterwards.
I can’t say for sure how editing the file will work, but it may have deleted the original or overwritten it.
If you want to send the phone off to be analysed, TURN IT OFF NOW. If the file was deleted, the OS is free to write over the “blank” parts of your storage, which may overwrite the original. Getting this done professionally is the most likely chance be sure that it works, but there are never any guarantees when it comes to data recovery. I don’t even know who you would want to send it to, and it won’t be cheap.
Can you even buy 500 GB HDDs these days? I can get 1tb drives from my local Officeworks for $63AUD, but that’s pretty uneconomical when you can get 10tb drives for $360AUD.
Get the largest SSD you can, and buy a HDD later on when you can afford it. You can get slight discounts on HDDs by buying external hard drives and “Shucking” them (removing the casing and using the disk inside). You may need to do some research to work out if it’s possible for the drive you want to buy though, not all are shuckable
No one forced apple to announce AI. They could have just waited until they had something ready.