My job is closely related with PowerPoint, and everyday I meet a lot of tips on PowerPoint,so I would like to collect these tips and share them with you all!
“I have a mobile MP3 player and almost all of my video collections are in MKV format. Is there some program that will play it or possibly a way to adjust the format to AVI or MP4? I'd prefer to adjust all of them if it is possible. ” MKV is the normal extension for any Matroska video file, it may have several video tracks (in most cases only one), at the same time as several audio and subtitles tracks, in various formats. MKV is not a video format. It is like a zip file and...