2008-06-04

Behind the curtain of iMovie '08


A lot of people hate iMovie 08 and a lot love it. I like it because it offers everything needed for basic video editing and because editing becomes so quick and easy. If you watch a professional documentary you'll see that only very few transitions or effects are used. All you need to tell a story are a cross disolve transition and a fade from and to black, centered or lower third titles, additional audio clips, voice over recording and ... nothing else. All this is offered by iMovie 08. Remember it's the story that counts.

Apple offers excellent video tutorials on using iMovie 08 but I always feel uncomfortable when I don't have a clue how a software actually works.

iMovie 08 installs the AppleIntermediateCodec.component in Library>QuickTime.

If iMovie 08 came together with a new Mac you can reinstall it by choosing Install Bundled Software Only on the first DVD.

When you import AVCHD footage into iMovie 08 it gets converted to QuickTime movie files. These files are stored in an event folder. You can choose where to put this event folder during import so it's no problem to use an external harddisk for video storage for example. To find the original file right-click a clip thumbnail and choose Reveal in Finder.

It's not obvious but you can also move entire event folders within iMovie. To do this click on the harddisk icon to the right of the "Event Library" title to switch to View Events by Volume then drag and drop the event folder to its new place. All files will be moved to the new location.

After the import, thumbnails of your footage are generated and stored in an iMovie Thumbnails folder within the event folder. These thumbnails are tiny Photo-Jpeg compressed QuickTime movies.

iMovie 08 will also generate an iMovie Cache folder within the event folder

The quickest method to add a scene to a project is selecting a range of frames in the events window and then pressing E on the keyboard.

The first step to repair clip display problems is to delete the thumbnail and cache folder within the events folder. You can do this safely, iMovie 08 will rebuild them after a restart.



The QuickTime movies in the event folder remain untouched all the time. Basically iMovie 08 is a nondestructive controller for QuickTime files. The control info - the actual project file - is stored in Movies > iMovie Projects on your main harddisk. If you right-click on a .rcproject file, choose Show Package Contents, double click Project and navigate to $objects you will see that all information about your edits is stored in this file. The size, the location of the original video or additional audio file, the in and out point of the edit, the titles, everything is managed by this project file.



The most dangerous operation (at least with the current 7.1.1 version) is deleting unused clips. If your projects are finished and exported you can right-click on an event folder and choose "Move Event to Trash" and then choose "Delete Unused". This is the only destructive operation by iMovie 08 since it trims the original QuickTime clips in the event folder to just the portions that are actually used in projects. This is very useful as it frees up a considerable amount of harddisk space after emptying the trash.

If this operation doesn't complete though you'll be left with a complete mess. I strongly advise to back up the event folder and the project file before you do this. If the operation completes successfully you can delete the backup and enjoy the additional storage space but if not, you'll be able to restore the event and project. Alternatively you can reimport all clips from the backup of the SDHC card. You made a backup didn't you?

Below is what happened to me after an unsuccessful deletion of unused clips. AVCHD import turned footage into animated impressionist paintings. Nothing helped only after deleting some older projects AVCHD import suddenly worked again.

Sometimes when iMovie refuses to import AVCHD it helps to go online or to turn off Airport!? Another option is to remove non Apple Quicktime components such as Perian.

Finally I want to reveal an Apple "secret" and introduce the person responsible of this new, quick and promising concept of video editing. iMovie 08 is the work of Randy Ubillos no less a person than the creator of the first three versions of Adobe Premiere and of Final Cut Pro! Here's the proof.

8 comments:

target said...

Hia,

.. hmm not working with apple here :) using windows...

The Chicken MTS file.. is blurry in the corners.. is this with all the movies you shoot with the HF??

P.s. i tryed to open that MTS file in Adobe Premier but i get a message that the format isn't recognized.. is this the format Canon puts on the SD ??

Thnxxx

Martin Koch said...

Good observation. I used the wide angle converter but zoomed in in the chicken sample. This was nonsense since a wide angle converter is not designed for this and does blur the corners when you zoom too far in. The HF100 alone will not blur any edges regardless of zoom.

I'm afraid Adobe Premiere doesn't offer direct AVCHD support so far. I've heard people use Vegas on Windows machines. Canon also supplies a software with the camcorder (I can't test it) that should allow to convert the clips into a format Premiere understands. The .MTS format is the original format recorded by the HF100.

Gareth said...

Thanks very much for your reviews and tips on using HF100. I appreciate your sharing on using it with Mac and especially iMovie 08. I got a HF100 yesterday and will surely come back often to learn from you.

Cheers,


Gareth

Valiente said...

Hi, I really need some help with my canon hf100...I've been trying to import some clip I shot on to my intel macbook pro, I'm using the latest update of iMovie08, but when I click on import the process goes on and after it has finished a message saying "there's a problem importing one of one clips from your camera, please review the imported movies carefully"....what am I doing wrong??? someone please help!!!

Martin Koch said...

I don't know. Copy the card to your macbook as described in a previous post and import from the backup.

I also got this message two or three times so far. I ignored it and everything seemed to be imported fine. If your clips are there despite the message I wouldn't worry too much about this.

Martin Koch said...

Valiente, do you have enough free space on your harddrive? I just found out that iMovie '08 also displays this message when there's not enough space free. It looks like it imports, then it displays the message and when you click Done the clip is not there.

braunas said...

I'm getting same error message on importing as Valiente. How do you "copy the card and import from the backup" as you mentioned? i have plenty of space on my imac.

Ceylan & Marc's blog said...

Hi,

I'm new to the world of MAC and iMovie (version 7.1.4 ) and I've imported video from my HF100. I can see and browse the thumbnails but the visualisation windows remains black despite my efforts: I can't see any of my files except in thumbnails.

do you know why?
Marc