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Running the Standalone Demos
Running the Demonstration Software 3-7
3.3.2 About the Encode + Decode Demo
The Encode + Decode demo allows you to record and playback video.
Video input comes from a source, it is encoded, then decoded, and sent
to your video display.
The Encode + Decode does only video processing; it does not encode
and decode audio or speech. The supported video algorithm is H.264
(.264 file extension).
The video signal is passed to video encoders and decoders by the Codec
Engine.
To use this demo from the command line, see Section 3.4, Running the
Demos from the Command Line.
3.3.3 About the Encode Demo
Like the Encode + Decode demo, the Encode demo also encodes video.
In addition, it also encodes audio or speech. The audio/speech source is
the microphone.
The encoded data is written to files on the EVM’s NAND flash. The
possible filenames are demo.264, demo.mpeg4, demo264.g711, and
demompeg4.g711. Older versions of these files are overwritten as
needed.
The encode demo has a five minute time limit to prevent the demo from
filling up the NAND file system.
Output is not decoded and sent to your video display or speakers other
than to show the settings and dynamic data collected about the load and
rates.
Table 3–1 IR Remote Buttons for Encode + Decode Demo
IR Remote Button Mode Action Performed
Up/Down -- -- no action --
Play or OK Setup Begin demo
Record -- -- no action --
Info/Select Setup Show / hide block diagram for demo
Info/Select Run Toggle information display
Left/Right Run Change information transparency level
Pause Run Pause demo (press Play to resume)
Stop Setup / Run Return to previous screen