# Obtain a List of Device Names

Media Server can ingest video directly from a DirectShow device, such as a video capture card or camera. This section describes how to obtain the name of your device, so that you use the name in the `source` action parameter, when you start the `process` action.

NOTE: Ingestion from a DirectShow device is supported only on Windows.

To obtain a list of DirectShow devices

1. Download and install FFmpeg.

2. In a command-line window, run the following command:

       ffmpeg -list_devices true -f dshow -i dummy

   FFmpeg lists the devices that are available, for example:

       C:\MediaServer_11.3.0>ffmpeg -list_devices true -f dshow -i dummy
       ffmpeg version ... Copyright (c) 2000-2016 the FFmpeg developers
         ...
       [dshow @ 000000000050a400] DirectShow video devices (some may be both video and audio devices)
       [dshow @ 000000000050a400]  "HP HD Webcam [Fixed]"
       [dshow @ 000000000050a400]     Alternative name ...
       [dshow @ 000000000050a400] DirectShow audio devices
       [dshow @ 000000000050a400]  "Internal Microphone Array (IDT "
       [dshow @ 000000000050a400]     Alternative name ...
       [dshow @ 000000000050a400]  "Stereo Mix (IDT High Definition"
       [dshow @ 000000000050a400]     Alternative name ...

   In this case you could ingest video from a device named `HP HD Webcam [Fixed]`. The name must be URL-encoded in the `process` action, for example:

       http://mediaserver:14000/a=process&configname=myconfig
                                         &source=HP%20HD%20Webcam%20%5BFixed%5D

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