If you are looking for getting your videos played, edited and converted from one format to another, you should use MPEG Streamclip.
It can manage multiple formats like for MPEG, QuickTime, transport streams. Additionally, you can also import files from different software, edit them, mux them, demux them. After that, you can also export the files that you have written through this application.
Some of the formats that can be used and converted from one to another using MPEG Streamclip include MPEG, VOB, PS, M2P, MOD, VRO, DAT, MOV, DV, AVI, MP4, TS. However, these are not the only file formats that are supported by this converter; wide variety is available in this regard.
You can get the high-quality videos through MPEG Streamclip. Additionally, you can download, edit, and export the audio and video files as well.