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The software follows this order looking for Python Hook files.

1. directory defined in the $DASELEMENT_RESOURCES/scripts/hooks environment variable

2. your local .das-element folder (for Linux: ~/.das-element/scripts/hooks or for Windows %homepath%/.das-element/scripts/hooks)

Print inside python file

To output data to the console when customizing the hook files use a print statement inside the main function. The input args will be a list of data.

You will need to activate the debugging mode.

export DASELEMENT_LOG_LEVEL=debug

Example for pre_load_ingest.py

def main(*args):
    items = args[0]

    for item in items:
      print(item) # <- this print() will be output to the console
    return items

if __name__ == '__main__':
    main(sys.argv[1:])

Pre Render Hook

The input is the resolver data dictionary which will be used to resolve the path pattern. You can modify it here before the transcoding task gets processed.

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To get a better idea what’s happening inside the hook files you can follow these steps:

1. inside the Python hook file you can add print statements

   Code Block
   print(item) print(item['path'])

2. start a terminal/command prompt

3. activate the debug mode - set the environment variable

   Code Block
   # Linux/MacOS export DASELEMENT_LOG_LEVEL=debug # Windows set DASELEMENT_LOG_LEVEL=debug

4. now run the software via the command line

   Code Block
   # Linux /opt/das-element-1.2.1/das-element-1.2.1 # MacOS /Applications/das-element-1.2.1.app/Contents/MacOS/das-element-1.2.1 # Windows "C:\Program Files\das element\das element 1.2.1\das element 1.2.1.exe"

5. If you make changes to the hook file you will need to restart the application to re-read these changes