I moved all the video mp4 files from my samsung galaxy S II onto my Dell Laptop computer (Ubuntu OS), and when I went to open them, all I have are .png's of the video thumbnails... and the files were moved so they are no longer on the phone! What happened to my video and audio of these .mp4 files? Why did they save as png's? Is the data recoverable? Is it hiding somewhere either on my phone or on my computer? Can png's be converted back to .mp4's? Help! I had 6 months of videos that I moved that now seem to be lost! Geez, I've learned my lesson I guess... I should have "copied" instead of "moved" but I wanted to clear out my phone at the same time.. one fell swoop... I never suspected that the file formats would be changed in the move!