PC1-desktop-wired: IE9, WMP12, File associations: .m4v=WMP
PC2-GW-laptop-wireless: IE9, WMP12, File associations: .m4v=WMP
PC3-Asus-laptop-wireless: IE9, WMP12, File associations: .m4v=WMP
Note: the 3 PCs have the same: OS: Win 7 HP SP1 64bit, WMP, IE versions.
The correct behavior is have the Movie play immediately b/c this is a format that is designed to be "Played on the fly". The user should not have to wait for the download to finish before playback begins.
Here are the responses from the 3 PCs:
Response from PC1: downloads .m4v file and plays it (incorrect behavior)
Response from PC2: plays .m4v immediately (correct behavior)
Response from PC3: Displays Prompt "What do you want to do with .m4v?" (incorrect behavior) Options displayed: "Open, Save, Save As, Cancel. I select Open and download begins (incorrect behavior).
Only PC2 has the correct behavior and it uses WMP 12 to play it, not Quicktime! Note that WMP 12 supports .m4v by default and is my preferred method of playback, b/c WMP allows you to use fullscreen playback, and Quicktime (free) does not.
I can't figure out what is different between the 3 PCs. I have checked the file associations and they are the same for .m4v
PC2 does not have any additional codec packages installed such as ffdshow, Media Player Classic, etc. It works with plain vanilla "out of the box" settings.
As for the PC1, it is also stock "out of the box" settings.
PC3 has both Media Player Classic and ffdshow installed.
It would great if someone could help me solve this mystery. The goal is to get all 3 PCs to do what PC2 does.