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Category Archives: Camstudio

Here you will find articles and videos helpful to users of Camstudio 2.0, 2.5, and the upcoming 3.0!

Xvid records Dual Monitors with CamStudio – 3 hours only 530 MBs!!!

I was working with Chris at YouTube who was trying to get a dual-display to record at least 3 hours with a region of 3358 pixels wide total and 1048 pixels high. Here is his report:

“Okay – So just to update you – I recorded on dual screens almost three hours (2 hours 55 minutes and 55 seconds) and the file size was around 530MBs (535, 501 KBs), which is wicked sweet.
The settings I used were the Xvid HD 720, Single Pass, Quality was 4, B-VOP was off, Set Keyfames – 200, Capture Frames every 100 milliseconds, playback rate was 10 frames/second.” Continue Reading…

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…

A List of Available Free Screencasting Tools

There are several freeware screen-recorders:

UltraVNC Recorder: – Basically CamStudio with some speedup enhancements.
Microsoft Encoder 4: Download link The free version of Encoder 4 can screen record up to 10 minutes at a time. 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…

Best Color Depth?
16-Bit Color Vs. 32-Bit Color Explained!

Use 16 bit color for screen recording and that will bring the file size down quite a bit. It also will allow your computer to work more efficiently! But let me explain first what “32-bit color” vs. “16-bit color” (and 24-bit color) really means! Then you may make your decision based upon what’s “really going on” under the hood!

16-bit video usually uses 5 bits (32 brightness levels) for red, 6 bits (64 brightness levels) for green (because our eye is more sensitive to green), and 5 bits again (32 brightness levels) for blue. So, 32 X 64 X 32 equals the famous “65,536 colors” you often hear about. Some Macs use 5 bits for each (for 32 X 32 X 32 = 32768 colors) and then uses 1 bit for an alpha channel. You most likely use the first type, however.

“32-bit color” is actually 24 bit color, plus an extra 8 bits for an “alpha” channel. Thus, 32-bit color is using 8 bits (256 brightness levels) for red, 8 bits (256 brightness levels) for blue and also 8 bits (256 brightness levels) for green’s brightness and 8 bits for the alpha channel, so it is actually 24-bit color with the added 8-bit alpha channel included. I understand that some video card’s transparency effects are dependent upon the 32 bit mode, Continue Reading…

Best Settings for Creating Time-Lapse Recordings in CamStudio

First, look at Nick’s suggestions in an old post at’s forums.

In it, Nick emphasizes the requirement to have the “Capture Frames Every” TIMES the Frame Rate to be equal to 1000. (thus 1000 milliseconds, thus 1 second).

The most important setting change was from:

Capture frames every: 500 mS (1/2 second)

Playback frame rate of output clip: 30 fps


Capture frames every: 500 mS (1/2 second)

Playback frame rate of output clip: 2 fps

Making the two amounts, when multiplied, equal to 1000 ==> 500-mS * 2-fps = 1000. 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. 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… Continue Reading…