User Guide

FILE FORMATS AND ATTRIBUTES
101
14.Back at the Video Compression dialog verify that the check box next to the Key
Frame Every field is enabled and set the Frames edit field to 60. This will set a
key frame every 10 frames. It is necessary to reduce the number of key
frames to attain the desired low bit-rate. Select OK.
15. Back in the Compression Options dialog verify that the Interleave Every check box
is clear. Select OK to start building the ASF file.
When the ASF file has been created Sound Forge XP will prompt you to play
it. Select Yes.This will start the NetShow Player.
16.From the File menu in the NetShow Player select Properties. Note the
following Properties pages:
The Details page shows that the ASF file has a bit-rate of 19,332 bps. Achieving
the exact bit-rate for a video stream will vary depending on the content.
Complex video may require fewer frames per second or less frequent key
frames. Frame rate, key frames, and video frame size are all variables that affect
bit-rate.
The Codecs page displays information about the codecs being used with the file.
ADDING AN ASF FILE TO A WEB PAGE
On the Sound Forge XP CD-ROM in the \SAMPLES\NETSHOW folder there is
an HTML file containing an example of how to use the NetShow Active
Control to add an ASF file to a web page.This sample will be used with the low
bit-rate video ASF file, SAMPLE2.ASF. Note that the HTML sample requires
Microsoft Internet Explorer v3.0 or better.
1. Copy SAMPLE.HTM to the folder on your hard drive that contains
SAMPLE2.ASF.
2. Modify the FILENAME parameter within the NSOPlay object to reference
your local SAMPLE2.ASF file (a fully qualified path is required).
3. Open the edited SAMPLE.HTM file within your browser. There are
additional instructions on the sample page.