[laserDinosaur]

One thing I didn't understand about the original video - why didn't they just CG in the bins instead? Why go to all the effort of CG'ing out the ball, changing the trajectory etc? It seems like it would have been easier to have him make 3 random kicks then add some bins in where they landed. But, maybe there's something obvious I'm missing.

[wonrax]

Because they would then have to camera track the whole clip to place the bins, and also make sure the bins stay in the correct positions when they reappear and disappear out of frame. In contrast, they only need to camera track the few frames when he does the kick. The quick movement of the ball also makes it harder to spot CGI errors IMO. Whereas if you have to fake the bins, you also have to deal with camera zoom, exposure changes, etc. that happen throughout the clip.

[laserDinosaur]

"Whereas if you have to fake the bins, you also have to deal with camera zoom, exposure changes, etc. that happen throughout the clip."

Oooh true, that makes sense. Cheers!

[FireBeyond]

> The quick movement of the ball also makes it harder to spot CGI errors IMO. Whereas if you have to fake the bins, you also have to deal with camera zoom, exposure changes, etc. that happen throughout the clip.

Way back in the day, Michael Crichton's Rising Sun, it talks about primitive video editing (when some people are editing the video scene of a crime). Looking at security camera footage over a period of time is monotonous, but harder too is also editing the audio. You could stare at the screen and still easily overlook a glitch, but a hard cut/slice in the audio will catch your notice even when only minimal attention is being paid.

[klankeser]

Changing ball trajectories accurately is hard but you are editing something in motion that is visible only for a few seconds, is in air, and will mostly be viewed through a bad screen. Adding in cg bins on the other hand, you need Beckham to do 3 kicks that land where the shot is looking, but more importantly have to get those cans tracked perfectly for the entire duration of the shot as they are always visible. I believe that is a much harder to pull off.