If you just need fast video conversion, MediaCoder or SUPER might be better tool for the job. And latests Windows Movie Maker opens M2TS and MP4 files (works in Windows Vista and in Widows 7).
As I have described earlier, there are serious problems with the Audio system in Vista and Windows 7 (last tested W7 about 5 months ago).
These Audio bugs prevent Composite Video/Audio from being recorded properly (muted playback) through a TV Tuner card and also prevent the user from using CD-IN for audio input. These items work in Windows XP SP3, and thus Windows XP remains indispensable for anyone who genuinely does day to day desktop video.
I own Vista Ultimate but cannot use it for this primary reason.
Composite is absolutely essential for anyone who truly watches TV on a PC TV Tuner card, since that is the method through which the user receives the Cable Set Top Box output.
The tuner on the card is mainly of value for scheduled recording when absent.
The PC TV Tuner is capable of tuning and decoding maybe 80 (70 NTSC + 10 ATSC ClearQAM) of the total maybe 500 channels for which the user is paying his cable company, each month. The rest are ATSC Encrypted.
The Composite input is capable of receiving All channels received by the cable set top box, as long as the user is present and selects the channel on the cable set top box.
When issues like these fail to be mentioned on forums like this one, it is a clear indication that those who post on these forums are not true users but are public relations/sales/marketing workers trying to pose as users.
What is the URL for SUPER download or what is its full name ?