is there a method to fade in/out using first/last frame

i do a lot short encodes but that start/end with poor quality looking frames.

an idea occured to me, that maybe its possible to use the fade in/out on these two frames. the trick is not to FadeIN, up to the poor frame, but rather, FadeIN, from black to normal, starting from that poor frame, and then continue after that frame in normal brightness. same for the last frame, use the last frame, and fade out to black from that frame.

to fine-tune this, i would bring clip into progressive (ivtc) and find a "best" frame to start the FadeIN/OUT with.

is this possible ? and how ?

thank you.