What is the best way of making an MP4 from an image sequence (PNG) I have rendered 80 individual frames from blender in 1080p. what is the best method for creating a high-quality MP4 file with disregard to size limitations for maximum quality. I read that blender re-encodes files which apparently is bad, so is there an alternate program that I must use and what are the optimal settings. Even if I should just use blender, what are the optimal settings as the default settings created a blurry pixelated MP4 from my high quality pngs.
Apologies if this has already been answered somewhere else
Thank you in advance for any support you can provide
Maybe the given answer is not specific enough for you. If you want an MP4 with best quality I would suggest (since you don't care about file size) to choose the following settings:

File Format: FFmpeg video
Container: MPEG-4
Video Codec: H.264
Output Quality: Perceptually lossless (with 'Lossless' I once had playback issues, might be because MP4 cannot be completely lossless, I'm satisfied with using 'High quality')
Encoding Speed: Slowest (should give best quality, but I see no advantage over 'Good')

Normally this should produce quite good results, although MP4 is not a lossless format it usually provides high quality along with a good compression i.e. small filesize.