.. meta::
   :description: rocDecode environment variables
   :keywords: rocDecode, environment variables, ROCm, AMD

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rocDecode environment variables
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The following environment variables affect the rocDecode runtime.

.. list-table::
   :header-rows: 1
   :widths: 28 72

   * - Environment variable
     - Values
   * - ``ROCDEC_LOG_LEVEL``
     - | Sets the maximum severity of log messages during decoding. The log level defines the maximum severity of log messages to output.
       | ``0``: Output critical messages only (default) 
       | ``1``: Output critical and error messages
       | ``2``: Output critical, error and warning messages
       | ``3``: Output critical, error, warning and info messages
       | ``4``: Output critical, error, warning, info and debug messages 
   * - ``ROCR_VISIBLE_DEVICES``
     - | Takes a comma-separated list of GPU indices. 
       | When set, the VAAPI decoder path parses this list before it falls back to ``HIP_VISIBLE_DEVICES``. 
   * - ``HIP_VISIBLE_DEVICES``
     - | Comma-separated list of GPU indices. Parsed when ``ROCR_VISIBLE_DEVICES`` isn't set.