sounds like a perfect job for my free auto white balance, auto flicker remover, and shadow restorer all-in-one. just set the gamma clamp so that the top text layer(its off default) shows 25. then the flicker gets removed plus the shadows repaired. I’ve used it on some destroyed 8, 16mm stuff, and it works perfect.
ae cs3 aep
https://www.mediafire.com/?fz0s3i85a45ou58
Is that super 8mmm color? If it is, your capturing process might introduce artifacts and color bleeding, don’t worry, I got that covered too.
chroma smoother – smart blurs only the saturation channel, so there’s zero blurring on the actual rgb(compared to remove grain plugins). It fixes minor DCT blockyness and grainy footage. set black mask at 99.99.
AE cs3 aep
https://www.mediafire.com/?ghrzqg4j0rjdvqg
now, you can do this stuff manually in AE with shadow effect,color finesse, or remove grain plugins. but auto is my cup of tea.
https://technicolorsoftware.hostzi.com/