OpenShot Video Editor

avchd editing using low res images

Asked by mlacons

I'm yet another person with avchd editing problems. Making mp4's hasn't solved my stutter problems. I notice that LiVES creates jpgs of every frame and runs great. Of course the interface is poor and the jpgs take up a bunch of space.

What I'd like to do is transcode from 1920X1080 to 480x235 or something to make small, fast edit files and then have it switch to the original MTS files for rendering.

Any suggestions?
Thanks for such a promising program! If I could solve this one issue, I'd could kill my vegas.
Mark

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Olivier Girard
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Best Olivier Girard (eolinwen) said : 		#1

Hi,
Openshot is not able to transcode a size in another one (i.e. 1920x1080 to 480x235), more small. This feature is planned but not yet implanted.
But you can use some presets which will decrease the quality (low, medium, hight). For sample a file for the web will be less big than a file for playing in a DVD Player. I hope that helps you a bit.
Thanks.

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mlacons (mark-monroecrossing) said : 		#2

Good News! I've got a solution to AVCHD or MTS file!

First I converted all the files to much smaller mp4 files. I modified this line from another question in this forum.
<command line>
$ find 'put the full path to your directory containing the MTS' -iname "*.MTS" -exec ffmpeg -i {} -acodec copy -vcodec mpeg4 -s hd480 -f mp4 -y -sameq {}.mp4 \;
</command line>

This makes smaller files in the same directory with .mp4 added to the original file name.

Now use the smaller files to layout your video and save it.

When you're ready to render your movie, save and exit openshot.

Next we need to make a copy of the ops file, ie: cp mymovie.ops mymovie-hd.ops. mymovie.ops is the name of your low-res editing copy. mymovie-hd.ops is a copy of your movie that will link to the original MTS files for rendering.

Lastly, we need to remove all references to .mp4 in mymovie-hd.ops. It's probably easiest to use kate or gedit. Just open mymovie-hd.ops and replace all ".mp4" with "". This will tell open shot to use the .MTS files instead of .MTS.mp4 files.

Open openshot and open mymovie-hd.ops. Render away in full resolution.