created with moshy's pdupe options
moshy is a command line datamoshing utility kit for AVI files, based heavily on aviglitch. It's designed to make common datamoshing tasks easier without having to open avidemux or other GUI tools. It lets you do stuff like:
- Convert video files into AVI video files with minimal I-Frames and no B-frames for ultimate moshability
- Create P-Frame duplication effects quickly
- Split a long video file into multiple clips based on its I-Frames
- "Bake" your datamoshed video, encoding the corruption as actual video content for uploading to video services or moshing even further!
- Identifying keyframe and deltaframe indexes in any AVI file
- ...and more!
If you don't know how to use the command line, this is a great opportunity to learn:
- Mac OS X Tutorial: http://blog.teamtreehouse.com/introduction-to-the-mac-os-x-command-line
- Windows Tutorial: http://lifehacker.com/5633909/who-needs-a-mouse-learn-to-use-the-command-line-for-almost-anything
You'll need to install Ruby. If you're on Mac OS X, you probably already have a local version of Ruby installed. Once that's done, you can use Rubygems (which comes with Ruby) to install moshy:
gem install moshy
From there, you can use moshy from the command line.
Moshy currently has six different modes:
prep- Preps a video file for datamoshing with moshy by converting it into an AVI with no B-Frames (they're not good for moshing), and placing as few I-Frames as possible. Requires ffmpeg be installed locally.isplit- Extracts individual clips from an AVI where each clip is separated by I-frames in the original AVI. Great for getting specific clips out of a larger video and later doing I-frame moshing.inspect- Reads an .avi file and prints which video frames are keyframes (I-Frames) and which frames are delta frames (P-frames or B-frames). moshy cannot tell the difference between a P-frame or a B-frame, so you will want to use avidemux or another program if you need to know.pdupe- Duplicates a P-frame at a given frame a certain amount. To find out which frames are P-frames, use software like avidemux to look at the frame type. WARNING: This mode is a little glitchy. You may need to set the interval 1 or 2 above or below the frame number you actually want to duplicate. I'm not sure why this happens, but try it with a small duplication amount first. NOTE: This can mode take a while to process over 60-90 frame dupes.ppulse- Takes c number of frames and every n frames and duplicates them a given amount, resulting in a consistent P-duplication datamosh that's good for creating rhythmic effects. This was originally created to create mosh effects in sync with a beat for a music video.bake- "Bakes" your datamosh by creating a new video file from your datamoshed .avi, causing the datamosh effects to be treated as the actual content of the new video instead of an error. Requires ffmpeg to be installed locally.
You can access detailed info on how to use each of them from the command line with
the command moshy -m <mode> --help.
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