I have a wordpress blog with +5000 video posts and I was wondering if there is a plugin or code that can edit all those posts to change the resolution size of the video. The videos are from veoh & megavideo
I very much doubt there is a plugin to change the resolution of video posted in 5000+ posts - that seems like a unique situation. You could try exporting the mysql database to a text file and use something like TextPad to do a find and replace to amend the resolution to what you want. Then you could restore the database. This obviously assumes the embed code is similar for most of the videos etc