Quality problem after exporting

Can you try switching to Software Encoding instead of Hardware Encoding in the Export Settings and export?

Let us know if it brings any change.

Thanks,

Nishu

so, what bit rate did you increase it to?  I suspect based on the response; all you did was turn off 'max render quality'.

I disagree with turning off max render quality, there is no impact other than performance, and even then, in rare circumstance such as rescaling video (which I can't tell if you have, as you may have a 4k video dropped into a 1080p sequence with a 1080p export.  If you have in fact done this, keep max render quality on as it improved the rescale math dramatically (hence slower but looks much better).

Details are important, please provided them if you would like enhance your success with this issue.

First of all, 7mbps for 60 fps video is almost half the recommended bitrate from YouTube; they suggest 12 (if HDR 15).

Recommended upload encoding settings - YouTube Help (google.com)

I would change the bit rate to at least 12, but you can go higher....  It seems you're recording with a Go Pro Hero, which if memory serves me correct is a significantly higher bit that 8, its like 78mps depending on the model.

I look forward to hearing back after you try the recommended settings from YouTube.  To me the text looks like bit rate artifacts, it should be correctable with the higher bit rate.  The way the system calculates where to provided the highest portions of bir rate are based on motion, and the text has the least motion, so it will be starved of the bir rate it needs to keep the edges sharp.  in convinced bumping that bit rate will solve your problem.