it seems proplayer controls overlay part of the movie. I have a 16:9 formatted film, both on youtube and on my webserver: link . Compare the 2nd and 3rd film (12M — TEST) and the 4th and 5th (1MAI — TEST) under "Orchestra Recordings". They have the same size but while Youtube shows the subtitles, Proplayer cuts them off.
Is there a solution for this?