[Nick Rogers]

I had a similar (albeit much more lo-fi) problem when trying to import some football (soccer) footage into FCP that I’d originally made with iMovie / iDVD. I tried Cinematize Pro, and also importing from the original DVD into iMovie and FCP via a DVD recorder/player with Firewire and all of them showed jagged lines and shadows for the faster motion parts, presumable due to interlacing and maybe the relativley low bit rate used by iDVD to make the original DVD.
But using MPEG Streamclip, File, export to DV, defaults and ticking “Deinterlace Video” got rid of the annoying jagged lines and shadows.

[Nick Rogers]

It seems QT 7.4 messes loads of A/V apps up – the solution is to revert to 7.3 using an alternative installer called Pacifist.
See this other thread: https://discussions.apple.com/thread.jspa?threadID=1342677&start=30&tstart=0
Get Pacifist at: https://www.charlessoft.com/
and the QT 7.3.1 download at: https://www.apple.com/support/downloads/

Open the 7.3.1 package with Pacifist and after its done all its checking and extracting it will ask if you want to Replace the existing application – answer Yes.
It retained my Pro pro apps auto registration.

[Nick Rogers]

Wish I’d seen this thread before letting the update go through – now I cannot use Compressor (2.0.1) for anything. I just get the Alert “Error trying to open source media file”.
Fortunately I’ve got access to Sorenson’s Squeeze so at least I can finish my current project while waiting (forever) for Apple to fix this horrendous cock-up.