Sonata No. 3 is all the videos uploaded before, and Ballad No. 4 has a slightly longer video than this one. I'll post it soon. I really want to see Yundi li's Chopin Competition video. I'm so sorry that I don't have any data. I hope Chopin International Association uploads it as soon as possible.
I think the story of Yundi Li's then-winning Chopin Competition was made into a documentary. This video was taken from there. Surprisingly, it contained parts of ballad No.4 and Sonata No.3. It was really interesting. I think that the Chopin International Association has a video of the performance.