This tutorial will show you how to extract selected AU from an existing H.264 elementary stream and save the newly generated stream to file.
1. Start off by going to File menu and selecting Open (or simply pressing “Ctrl + O”). In the newly opened window navigate to the file containing the elementary stream that you want to work with.
2. Select the AU which you want to extract, then open the Tools menu and select Extract Selected AU.
3. You will be asked to choose a file name for the newly generated file. Navigate to the folder you wish to contain the file and enter a file name, then click Save.
4. When the newly generated file is saved, you will be asked if you want to open it now. Select No if you want to continue the work with the original file.
The next screenshot shows the resulting H.264 elementary stream.