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Editing mpeg-4 movie file


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Editing mpeg-4 movie file
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scubaski
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Join Date: Mar 2005
Location: somewhere hot and holy
 
2007-08-23, 06:29

I have a few large movie files which take up too much space. In order to save some disk space I would like to trim these mpeg4 files down and dump the unwanted bits. From what I understand I cannot do this in iMovie as the programmme is designed to always save the whole project (incl the deleted/unwanted bits).

Is there any editing software. preferably free, which will allow me to do this basic editing task and permanently delete unwanted stuff?

Thanks.

iBook 12" 1.33GHz G4 1GB 60GB OS X 10.4.11, iPod Nano 8GB 2G, Canon Ixus Digital 40
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rasmits
rams it
 
Join Date: Oct 2004
Location: Seattle
 
2007-08-23, 06:35

You can edit the movie in iMovie, export the edited project, then delete the project file. That's what I usually do.
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scubaski
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Join Date: Mar 2005
Location: somewhere hot and holy
 
2007-08-23, 07:03

rasmits, thanks.
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scubaski
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Join Date: Mar 2005
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2007-08-23, 07:56

one more question....iMovie imports the mpeg4 file in DV-NTSC format (which takes a long time and takes a lot of HD space), is there a way of working with mpeg4? iMovie does not seem to give me options for importing formats.

Using the (default)NTSC import format and then exporting mpeg4 I noticed a significant deterioration in the picture?

iBook 12" 1.33GHz G4 1GB 60GB OS X 10.4.11, iPod Nano 8GB 2G, Canon Ixus Digital 40
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rasmits
rams it
 
Join Date: Oct 2004
Location: Seattle
 
2007-08-23, 08:26

That question I'm afraid I can't answer. I was sure you could change import settings, but if you looked and couldn't find any, than apparently not.

I'm a little confused - did you already import / export and notice a deterioration of picture or are you asking if you will?

You had me at asl
.......
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scubaski
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Join Date: Mar 2005
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2007-08-23, 08:56

I have already done a demo of a small 21MB mpeg4 file which took over 20min to import. The export took only a few minutes (not surprising as I ended up with a 4.4MB file) but the quality is pretty bad. However calculating/comparing file size relative to running time I see that the edited movie has fewer MB/min (about 25% less) and therefore has a much worse picture.

iBook 12" 1.33GHz G4 1GB 60GB OS X 10.4.11, iPod Nano 8GB 2G, Canon Ixus Digital 40
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scubaski
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Join Date: Mar 2005
Location: somewhere hot and holy
 
2007-08-23, 11:13

Actually, there is an option about importing formats which I overlooked....it is shown in rather small print :-)
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