Revert "change video format to post"
Revert "change video format to post"

This reverts commit 2d82f395f73616754392e68c9a538ce84f456619.

stgmva/stgmva.github.io,stgmva/stgmva.github.io,stgmva/stgmva.github.io,stgmva/stgmva.github.io