Video not synced with audio for the Piano Roll "Send to YouTube" feature.
I believe that my Violins + Piano arrangement is the cause. I video has to be sped up from 100% to 101% to match up the audio I uploaded along during the send.
Also, for the subtitle part. It fails to process other language words. I used Japanese.
Comments
Issues with the online score sharing platform of .com should be addressed there: https://musescore.com/groups/improving-musescore-com/
These forums on .org only cover the free desktop notation software.