It wouldn’t be a good idea to go with Prores, because making a distribution copy would result in another lossy conversion on top of that.
Fair enough. Thought it might be a good balance between the 50gb per 10 minutes he was getting. From my format calculator, uncompressed 8-bit at SD 59.94 should be about 24gb per 10 mins. That would be a good lossless option.
Agree with this,
With this source (TV) Apple Prores 422 is enough…
you can also run with Apple Prores 444 (it will increase the size)
if you want you can have a larger project with a TGA or TIF project as mastering.
But, I don’t think it is a good idea because TGA or TIF is for cinema vfx and mastering process
do you really need this?.
The distribution copy should be MP4 or MKV with a large bit rate, as every shared movies.
Or in BLURAY format.
Nobody will download 90 or 200 GB movie file.