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Category Archives: Virtual Dub

Here you will find articles and videos helpful to users of Virtual Dub for editing and processing your videos!

CamStudio (and more!) Mind Map

Here is a mind-map I originally researched and created thinking to sell a course on using CamStudio. But soon afterwards, I became the “help desk guy” for this cool, open-source (FREE) software, and although the Open-Source credo allows selling support materials, I just didn’t feel right. So, I started this site, and then produced the CamStudio tutorial video series you see on YouTube today, and several of the videos there now have surpassed 10,000 views!Continue Reading…

PCM or Microsoft ADPCM?
Which is the Best Audio for Screencasting?

Which is better? PCM or Microsoft ADPCM ?

Well, that all depends on your processor speed and memory, and what kind of audio quality you deem important, among other things! Here is the “whole truth” concerning both!

PCM (which stands for “Pulse Code Modulation”) is GENERALLY SPEAKING the same as 16-bit “CD” audio (as most people use it, though it is available in 8-bit format as well – see below), and it is the standard, having no compression at all – every snapshot, from silence to the loudest waveform burst, is represented by a full 16-bit “word”. It will exhibit the highest audio-portion file size. It records audio into the .wav format into a linear stream of samples.Continue Reading…


Using Virtual Dub With Time-Lapse Video Recordings

You can use VirtualDub (free!) to change the frame-rate for playback to anything you like. http://virtualdub.sourceforge.net/

Step 1 – load the video
Step 2 – in either “Full Processing” (you’re changing compression also) or “Direct Stream Copy” (you’re just changing the frame rate) modes, under the “Video” menu select “Frame Rate”
Step 3 – Under “Source Rate Adjustment” select the second radio button, “Change frame rate to (fps) and enter the desired frame rate. For time-lapse recorded stuff, selecting a slow frame rate of 1 frame per second or so will produce slide-show-like results. Move to higher numbers to speed up the playback.
Step 4 – Process all frames. Click “OK”
Step 5 – Under “File” select “Save as AVI” and re-save the video with the new frame rate for playback with a different descriptive filename (filename1fps, for instance)

Now you’ll have a time-lapse movie that outputs nicely. For really long intervals (like 10 minutes between frames), you can instead opt to output each frame as a separate “movie” to be loaded into an editor to allow cross-fading between every frame. Continue Reading…