MPEG-2 component & OS 10.7

Question

is there an MPEG-2 component for Lion?

Answer 1

Jon Walker wrote:
Doesn't need to be. It just needs to be recognized by and compatible with your version of iMove.
Yes, I'm aware of this. I replied because you mentioned AVCHD, but I misread the “to “muxed MPEG-2” part, my mistake here.
Jon Walker also wrote:
Not sure what you mean by "shortened" here.
When I open my VOB files with thar Codec, QT usually shows the first seconds/minutes of the file (the controller also thinks the video is of that length). If I “go to end” (e.g. by using Option-Right arrow), I sometimes see the real end, but then moving the “time handler” (sorry, english isn't my native language) to the left, it will eventually jumps to the start half (=true relative time from 0, given the controller's total time) past a given place. No matter how, I can't usually see more than a couple of seconds/minutes from the start.
Jon Walker followed and wrote:
However, as to never having any audio track, what compressed data is contained in the VOB file? As noted above, AC3 audio is not natively compatible with QT 7 Pro and, since most VOB files contain MPE-3 video multiplexed with AC3 audio, there is little wonder at not being able to play the audio.
Mine seem to be A52 encoded-audio, which turns out to be some kind of AC3. I'll try this codec: http://www.macupdate.com/app/mac/21875/a52codec
(AC3 isn't recognized, but perhaps its subtypes can).
Jon Walker lastly wrote:
Either demux the VOB to an MPEG file containing MPEG-2 video multiplexed with MPEG-1 layered audio or demux the VOB to paired M2V and AIFF files. Both options preserve the original video quality but have QT 7 compatible audio. (I prefer the paired elementary stream files as they can also be edited at the frame level in QT 7 Pro (but not iMovie) and do not have the 4 GB file length restriction of the MPEG file container.
In any event, that is why I specifically mentioned the use of MPEG Streamclip above. It can handle the "muxed" AC3 audio which QT 7 natively does not handle and, together with the QT MPEG-2 Playback component, acts as a bridge to make the VOB content fully compatible with QT 7 Pro playback and/or editing without actually re-transcoding the video and thus, preserves its original quality. Plus, if the VOB title set contains multiple files, the data can be merged as part of the demuxing/repackaging process by MPEG Streamclip.
All good advices, thank you!