multicamera editing – computer upgrade advice advice

[John-michael Seng-wheeler]

[Louis Eguchi] “i haven’t tried pre rendering each clip, however they are already yellow meaning my hardware can handle this realtime.”

Sure you can play one clip at a time… The problem no part of your system is going to handle 6 streams at once.

Playing multiple streams puts a very high demand on your disks, much more then just 6 times, because the data access is no longer a sustained read… it has to jump around to read all 6 files at once.

Your processer is probably not up to the task ether.

In your situation I’d probably forgo the Multicam viewer and just stack the 6 clips in the timeline and cut it manually.

Transcoding isn’t really an option because you’ll hit the limits of your disks. Proxies would work though.

Try force rendering each clip. Just cause it’s yellow doesn’t mean anything in this case. All that’s telling you is is probably can play one clip in real time. Premiere’s default preview render format is MPEG2 which will be far less taxing on your processor, but chances are your disks are still too slow. However, it may improve things to the point that you can edit. (This is assuming that Premiere uses the preview files for multi-cam playback… I have no idea if it does or not. )

[Jon Barrie]

Hi Louis,

John-Michael is correct in that your system is not fast by todays standards and that at the core of the issue is the datarate of 6 streams running at the same time.

I helped someone recently with this issue and found the way around it.

First you need a dedicated drive for the media.
– Make the Multicam sequence as you would normally (prob already have this)
– duplicate the multicam sequence and rename it to reflect it’s the original media
– From the Project Panel “Open in Timeline” from right click option (this will open the multicam nested sequence to show each camera angle as a video track)
– Remove all the eyes from the video tracks and 1 at a time from video 1 show just that camera angle and export it to MPEG-2 HD CBR at 6Mbps
– If you have 6 Camera angles, name each camera MPEG-2 export as the relevant Cam#.
– Import the new Proxy camera angles.
– Make a new Multicam Sequence and name it “Proxy Cameras”
– Open in Timeline
– Select All and copy
– Open the Timeline you are doing the edit in and hold control(command on mac) and double click the nest you were editing from.
– This should open the original Multicam Seq (NOT THE DUPLICATE)
– Select All and Delete.
– Paste the Proxy Material, to be sure they paste into respective tracks, have no tracks targeted or just the video 1 track.
– Go Back to the Seq you are Multicam editing from with MC window.
– This is where you can edit your Multicam shots.
– Once you have finished the choices of which angles when and where, go back to the duplicate of the original select all and copy, go back to the nest that you have been editing from and select all, delete, paste the original material in place.

Now the proxy – light weight media for MC edit is replaced with the original DSLR media and will playback like it’s one continuous edit, ready for quality check and grade, effects, etc.

Hope this helps. (Bit long winded – will have to make a tutorial)

JB

Jon Barrie
Adobe Video Solutions Consultant ANZ
Jon’s YouTube Tutorial Page
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