Quicktime playing white or black screen on Intel MacBook

Question

Please Please Help! Am I the only person who continues to have trouble with Quicktime. I edit in FCP 6.0.5 and often deliver films as .mov or other codecs such as .flv which often means exporting as .mov as a first step. Working with three Macs (as detailed below), cutting on Powermac, running codec on G4 to free up Powermac and taking .mov films to show clients on the Intel MacBook or sending disks with .mov or mpeg files. So often I end up not being able to show the films, or worse the client is sitting in their office wondering why it looks like I have sent a disk with nothing on! (there was stuff on it). The most common problem being sound but no picture, either a white, or just recently a black screen! I do get the the ‘Unsupported Codec’ - ‘Missing Component’ error and end up on the useless component page at Apple. I have not once installed anything on that page that has helped fix a problem!
The bizarre problem is I can play any of the Quicktime films on both G4 and Powermac but not on Intel MacBook???? G4 doesn’t have FCP so as with MacBook icons default to Quicktime icons but as would make sense icons on the Powermac which is FCP installed show as FCP icons.
I have tried opening the FCP .mov films in Quicktime (buy the way Quicktime Pro 7.6 (472) is installed on all three machines) and exporting as Quicktime movies hoping it removes any FCP data or codec information, but this doesn’t work either? The film will still not play on the MacBook.
This problem seems to happen around upgrades..? is this a red herring? Is anyone else getting really VERY frustrated by the ongoing flaky Quicktime behaviour. I have to use Apples codec because I use FCP professionally but it often makes me look like an amateur. I’ll try any possible fixes anyone has. Thanks very much in advance!
INFO for the quicktime film I have been having this latest problem with;
Format - Apple HDV 1080i50, 1440x1080, (1888x1062), Millions, 16-bit integer, (Big Endian), Stereo, 48.000 khz
FPS - 25
Data Size - 1.01 gb
Data Rate - 26.55 mbits/s
Normal size - 1920x1080
G4 Powermac (Duel - non intel), OS10.5.6, 1.25ghz, 1.25gb memory, Quicktime Pro 7.6 (472), FCP 6.0.5, Plugin Perian 1.1.3
G4, OS10.4.11, 800mhz, 1gb memory, Quicktime Pro 7.6 (472), Plugin DivX, Plugin Flip4Mac
MacBook Intel Duo, OS10.5.6, 1.83ghz, 1gb memory, Quicktime Pro 7.6 (472), Plugin Perian 1.1.3, Plugin DivX
If you’ve go this far you’ve read all this info, thanks for your time and I hope you can help.

Answer 1

Your file uses a video codec (Apple HDV) that is only available to a machine with Final Cut installed. It is very "raw" (lightly compressed).
What you want to do is export from Final Cut and use H.264 Video codec and AAC audio. This file will play on any machine (Mac or Windows) that has QuickTime 7 installed and meets the high definition playback specifications.
The 800 G4 and the 1.25 dual G4 will both drop frames during playback because they don't meet the HD playback requirements.