The original installer's disk image (Quick Time MPEG2.dmg) is required.
The current versions of MPEG Streamclip cannot take advantage of the built-in MPEG-2 functionality of Lion and Mountain Lion.
: if you want to download movies from You Tube, please use the beta version below.
To install MPEG Streamclip, simply drag it into your Applications folder.
Video conversion is performed in the YUV color space; you can choose to scale video to any frame size using a professional 2D-FIR scaler (better than bicubic) but you can also leave it unscaled.
Other optional video processing features include a powerful motion-adaptive deinterlacer, a field dominance converter, a chroma reinterlacer and an option to perform interlaced scaling instead of progressive scaling.
You can use MPEG Streamclip to: open most movie formats including MPEG files or transport streams; play them at full screen; edit them with Cut, Copy, Paste, and Trim; set In/Out points and convert them into muxed or demuxed files, or export them to Quick Time, AVI, DV and MPEG-4 files with more than professional quality, so you can easily import them in Final Cut Pro, DVD Studio Pro, Toast 6, 7, 8, and use them with many other applications or devices.
Supported input formats: MPEG, VOB, PS, M2P, MOD, VRO, DAT, MOV, DV, AVI, MP4, TS, M2T, MMV, REC, VID, AUD, AVR, VDR, PVR, TP0, TOD, M2V, M1V, MPV, AIFF, M1A, MP2, MPA, AC3, ...
Apple states the component is unnecessary in Lion and Mountain Lion, however MPEG Streamclip still needs it.
For FLV playback and export, you can download and install Perian (