User`s manual

Updates since version 2.25 15
http://www.jmcgowan.com/avicodecs.html#CodecPerformance
A good place to start is with the most common codecs that come with all versions of
Windows. These are very reliable and will produce AVI files that are easily played back on
most PC’s and Mac’s.
Cinepak Codec by Radius – This is one of the most widely used codecs for AVI files. It’s
most significant strength is its ability to be played back on the widest variety of machines.
Intel Indeo Video R3.2 –Indeo is very similar to the Cinepak codec. It also plays back on a
wide variety of machines.
Microsoft Video 1 – This is an older codec developed for Microsoft Video for Windows.
Note that this codec only supports 8 and 16 bit color.
Microsoft RLE – This is another older codec developed for Microsoft Video for Windows.
Note that this codec only supports 8 bit color.
MJPEG Compressor – This is the Microsoft motion JPEG compressor – it performs JPEG
image compression on each individual frame of video. It is mostly used by video editing
systems.
The following is a list of other codecs commonly found on Windows PC’s that typically
don’t work well (or at all) for subtitling with CaptionMaker.
Intel 4:2:0 Video V2.50
Microsoft H.261
Microsoft H.263
There are many newer codecs available such as MPEG, DivX, etc., but most of these
require licensing arrangements. CPC is currently investigating this.
Selecting the Video Compression Options
The “Video Compressor Settings” dialog allows you to set several fundamental parameters
for the selected codec. The dialog only allows you to change the settings that the currently
selected codec supports, and the dialog also displays the default values of these settings for
the currently selected codec.
Quality – controls the video quality produced by the codec. It is specified as a floating point
number between 0.0 and 1.0. Higher values will produce higher quality video playback and
subsequently larger AVI files. Lower values will produce smaller AVI files at the expense of
lower video quality.
Key Frame Rate – controls how often a “full frame” is recorded into the AVI file. The rest
of the time, the compressor only records what has changed since the previous “full frame”. A
higher value generally increases the compression ratio and reduces the AVI file size.