Converting mp4 results in grey image?

[D3vR]

Hi

I edited a short film on a Mac and accidentally exported it as an mp4. Now, whenever I try convert it, I get a mangled, gray image. I needed to do a little touch up in Windows Movie Maker, so I managed to convert it to avi. I then needed to put it online, and seeing as I couldn't convert the mp4 file to flv, I converted the avi file instead. The film was origanally shot with a not-too-great camera, so this "triple conversion" has really degraded the quality.

So I finally got fed up and uploaded the mp4 straight to YouTube. It came through with the same sort of grayed over effect.

Any ideas as to what I'm doing wrong?

Here's the video:
http://www.youtube.com/watch?v=ifTDLiqeNzQ
(Watch out: the file is 160 MB)

Thanks

[Baldrick]

Can you post the details from the mp4? Use mediainfo, open mp4, view->text and copy and paste all info.

[D3vR]

Here we go:

General
Complete name : C:\Documents and Settings\Devon\Desktop\a THOUSAND Paper Plates\a THOUSAND Paper Plates.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 160 MiB
Duration : 8mn 10s
Overall bit rate : 2 742 Kbps
Encoded date : UTC 2010-01-24 06:17:40
Tagged date : UTC 2010-01-24 06:17:40

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 8mn 10s
Bit rate mode : Variable
Bit rate : 2 546 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 5:4
Frame rate mode : Constant
Frame rate : 25.000 fps
Standard : PAL
Bits/(Pixel*Frame) : 0.246
Stream size : 149 MiB (93%)
Language : English
Encoded date : UTC 2010-01-24 06:17:40
Tagged date : UTC 2010-01-24 06:17:40

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 8mn 10s
Bit rate mode : Variable
Bit rate : 192 Kbps
Maximum bit rate : 297 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Stream size : 11.1 MiB (7%)
Language : English
Encoded date : UTC 2010-01-24 06:17:40
Tagged date : UTC 2010-01-24 06:17:40