Everyday people are told here: H.264 IS NOT AN EDITING CODEC
This comes up multiple times day. You’d think everyone in the know universe would know this fact by now, but yet, still, it comes up.
There should really be a sticky on the top of this forum.
ProRes
DVCPROHD
DVCPRO50
Uncompressed 8 bit
DVNTSC/PAL
Or what best fits your footage.
These are some of the codecs to use.
Chris Tompkins
Video Atlanta LLC