I've been searching everywhere and playing with all the settings myself, but I'm getting nowhere, just more and more frustrated.
I currently use VP15 along side either my DJI Mavic Pro and currently GoPro Hero 7 Black. For the life of me I cannot seem to get the output quality to match the input quality. I'm not doing any real editing as such for this example, basically trimmed a small section from the start of the video and the end, set it to render with the closest possible settings to the input source (bit rate, frame rate, codec etc) but it looks like turd, lots of compression artifacts.
For my GoPro I'm currently rendering:
Magix AVC or HEVC
VBR which matches the GoPro source rate
Best render quality
It's most noticeable in the shadow sections of the video.
I'm really at a loss as to what I am possibly doing wrong.
To add to that, when I upload to YouTube, it looks even worse!