Copyright: Copyright ® ...


Topic1
PICVideo Visual Help


2fields
2 Fields if More than 240 Lines Checkbox

This allows for interlaced capturing if the image is greater than 240 lines in height.

Compressing two fields takes a little longer  and compresses differently -- if there's a lot of motion two fields may compress better, if there's very little motion, two fields may compress worse.  Post-decompression processing may be more effective with two fields.

Certain decompressors have a height maximum and enabling this option will allow you to stay within these constraints.


basic
Basic / Advanced Button

This button toggles whether the advanced options are visible or not.  The advanced options include:

•	Luminance Quality

•	Chrominance Quality

•	SubSampling

•	Output Settings

•	Field Settings

•	Codec Settings


cancel
Cancel Button

Leave the Settings window without saving any changes.


codecenabled
Codec Enabled Checkbox

Checking this option will make the PICVideo MJEG Codec available to AVI and DirectShow subsystems.


compressionslider
Compression Vs. Quality Slider

This is the basic slider that lets you determine whether you want to favor compression or quality in your video.

If you're using video conferencing software and don't seem to be able to transmit video, try setting the slider all the way in favor of compression.


forceyuy2
Force YUY2 Output Checkbox

Enabling this option tells the display software not to do colorspace conversion to RGB.

If your display device does not support YUY2 an error message may occur.  Unchecking this box should eliminate the problem.


id2011
Decompressor ID: 2011

The User Name and User Registration Number will be emailed to you upon completion of the online registration form.  You can find the beginning of this form at:

http://video.jpg.com/picreg.html

Unregistered products will watermark any video with our information.

It is important to note that the User Name and User Registration Number must appear exactly as they do in the email.  They are linked to each other and are case sensitive.


id2211
Compressor Product ID:  2211

The User Name and User Registration Number will be emailed to you upon completion of the online registration form.  You can find the beginning of this form at:

http://video.jpg.com/picreg.html

Unregistered products will watermark any video with our information.

It is important to note that the User Name and User Registration Number must appear exactly as they do in the email.  They are linked to each other and are case sensitive.


lumchrom
Luminance and Chrominance Settings

If you enable the advanced settings by pressing the "Advanced" button you will see these two fields enabled.

When you move the Compression/Quality slider the values for Luminance and Chrominance will change.  The higher the value for Luminance and Chrominance the more compression, but the more loss you will see.

Luminance controls the overall brightness of an image and the compressed quality for brighness information.
Chrominance controls the color information of an image and the compressed quality for color information.

As a note, you can set the values for Luminance and Chrominance from 0-255, but an increase in the compression of Luminance is more noticable than an increase in the compression of Chrominance.


ok
OK Button

Save the changes you made and close the Settings window.


primarycodec
Primary MJPEG Codec Checkbox

Checking this option will set the PICVideo MJPEG Codec as the default codec.  This is only applicable if there is more than one existing codec installed.


register
Register Online

This button will launch your internet browser and open our Purchase Products page.  You will see the option for "PICVIDEO Motion JPEG CODEC (1 CPU COMPRESS and DECOMPRESS)."  Check the box next to this option and click the "Add to Shopping Cart" button at the bottom of the page.

Follow the instructions to check out and be sure to have your credit card handy.  When your order has been processed we will email you registration information for you to enter in the registration fields.  This will fully unlock your PICVideo MJPEG Codec.


Subsampling

This is a setting that allows you to get higher compression of your video images.  Listed below are the values and a brief description.

•	1:1:1 sub-sampling is the process of storing the color value of each pixel in a block of pixels.  Compresses a color pixel for every brightness pixel.

•	4:2:2 sub-sampling is the process of storing the color value for each of 2 horizontal pixels and 2 vertical pixel in a block of 4 pixels.  Compresses one color pixel for every two brightness pixels horizontally.

•	4:1:1 sub-sampling is the process of storing the color value of 1 pixel for each of 2 horizontal and 2 vertical pixels in a block of 4 pixels.  Compresses one color pixel for every 4 pixel (2x2) box of brightness pixels.

4:1:1 and 4:2:2 sub-sampling introduce a certain amount of color loss in a compressed image.  With most photographic images the loss is very slight in comparison to the increase of compression.  1:1:1 sub-sampling stores the color value of each pixel and therefore will not obtain as high a compression ratio as the other 2 supported sub-sampling models. However, 1:1:1 sub-sampling can be an excellent way to maintain detail in a compressed image particularly when compressing images with many straight lines.

As a side note, 1:1:1 and 4:1:1 are not compatible with most other MJPEG decompressors so 4:2:2 si ordinarily recommended.


swapdecompress
Swap Decompress Fields Checkbox

If the video was captured with the fields switched you may see "jumpy" playback.

Checking this box will allow you to view the video stream as it was captured and provide you with better playback quality.