Magic Bullets Bug

2G wrote on 5/24/2007, 10:30 AM
I've just started using Magic Bullet Movie Looks, and I've hit a serious bug. If the first frame of the clip is the first frame of the actual media, and I add a Magic Bullet effect, the first frame is completely black or it is almost completely faded to black. I had a project with many quick cuts that I went back and added MB looks to. I ended up with a black flash on every cut. I had to go through the entire project chopping off the first frame or two and stretching the clip slightly to fit the required length.

This may be some sort of fancy 'feature'. But if it's a feature, I need to know how to make it not do it. Otherwise, is there any other workaround, other than never use the first frame or two of the media file? (not good since I had trimmed all the media to the precise clips I used, meaning every clip starts with the first frame of the media).

Suggestions? Is this a known problem with an updated version?

Comments

Former user wrote on 5/24/2007, 10:34 AM
Did you have QUANTIZE to frame enabled?

Dave T2
2G wrote on 5/24/2007, 5:42 PM
Hmm, it looks like it is enabled. I guess from your comment that if it is on, then it must need to be off instead. Is that correct? Do I need to turn it off? But for the life of me, I'm not sure how I was supposed to know that. Is this behavior of MB documented somewhere?

And will turning it off automatically fix everything, or do I then need to go back and realign every clip?

To me as a first time user of MB, it would have been nice to have a popup telling me quantize is on and unusable results are going to happen. I can't believe anybody would WANT the result I got. Even if there's an explanation for why it does what it does, getting a little info from the plugin to avoid this would have been nice.

Thanks for the pointer.
TheHappyFriar wrote on 5/24/2007, 10:30 PM
quantize on means that all your cuts/movements are on a per-frame basis. that's good for video editing.

i've never encountered that "bug" before. sure there's not fades/overlapping at the start of the clips? that's what it's sounding like.

EDIT: How did you apply MB? On the event, media, track or project level?
Former user wrote on 5/25/2007, 6:15 AM
Quantize to Frame should be enabled for video editing. I did not mean to confuse you.

Dave T2
2G wrote on 5/25/2007, 7:59 AM
In this case, I am applying MB at the clip level on all clips. I tried playing with it with quantize on and off. Quantize off actually made it worse.

I can guarantee there are no explicit fades on the clips. This was a completed project that I went back and retrofitted with MB to enhance the look. Simply adding the MB filter to the clips created this situation.

The key point is the failure ONLY occurs when "Clip = Media". In other words, the clip starts at frame 1 of the media. If I trim a frame off the front of the clip (i.e. clip starts now at frame 2 of the media or in a couple of cases, frame 3), then the problem goes away.

It definitely 'looks' like a fade. But I'm not doing it... Sometimes frame 1 is completely black. But in most cases frame 1 is a partial black-fade (you can see the picture, but it's almost black).

To me, this is definitely a bug (I'm a software architect/programmer for my day job). I guess it's probably not that prevalent since most people either apply MB at the track level and/or don't start many clips at frame 1 of the media. As I mentioned yesterday, the only reason this is so prevalent in this project is that it was a completed project, and I had trimmed all the media to equal the clips. Hence every clip starts at frame 1 of it's respective media file. Knowing this bug exists, I can work around it in the future. But it would be nice if it could get fixed.

Thx.
TheHappyFriar wrote on 5/25/2007, 2:02 PM
are you only using the 320x240 preview window for reference?

Why not just apply the MB FX to the track or project? Did you try rendering the whole project to a new track & applying to the new track media?
2G wrote on 5/25/2007, 8:44 PM
This is not a preview issue. I rendered the project to an AVI file and get black frames in the avi file. When I spread out the timeline to see every frame in the clip, the first frame is black. And when I single step frames left/right across the transition, I get a black preview window (and while sitting on a black frame, enabling/disabling the clip effect toggles the frame between black and 'correct'. I can't think of any possible way this is anything other than a bug in MB.

Every clip has a different MB style. Granted, I could put the MB at the track level and use HOLD keyframes to change the style on each clip. But that's a royal pain.

Basically, I've already found a workaround. But in either case, in my programming job, when a bug is found in my code, I fix it. I don't expect the customer to be satisfied simply because they figured out some convoluted painful workaround. This is a bug. It needs to be fixed.

Thx.
farss wrote on 5/25/2007, 9:48 PM
Possibly not a bug at all, rather a product of how MB works. This is just a wild guess as I've never used MB but from memory it does a motion compensation analysis. That could mean it needs to look at frames before and after the current frame.
Problem it'll have is in some of your clips there's no previous frame for it to look at. I guess technically it should throw up an error message if it hits that brick wall but error checking can slow things down.
Moral here might be to always capture with handles.

Bob.