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Tag Archives: software

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 CamStudio to Sync
Audio and Video

I created this video after a bit of trial and error (and research!) that demonstrates how to set up CamStudio 2.x so that the audio and video stay in synchronization throughout the length of the video.

Although I mention in this video just using the Microsoft Video 1 codec, I now feel that either the Camstudio Lossless Codec or Xvid/DivX or FFDShow are the easiest to use with good quality.

There are videos on YouTube for best DivX and other codec settings you can also check out. (Just search)

Get Camstudio 2.6 Beta at this direct download link

Or get the older, stable version 2.0 here.

In a Nutshell:

Avoid audio/video sync problems – use 25 for the “Capture Frames Every” setting and 40 for the “Playback Rate” preferably using a 16-bit display color setting for fastest/smoothest playback rate (see the rest of this article to understand why…) This setting produces very smooth results, albeit with large-ish file sizes.Continue Reading…