Knowledge Center

DMA Compatibility

You can enhance DMA compatibility to make sure the multimedia contents on your Synology NAS are played smoothly on your DMA devices.
Please note that file conversion will apply to every device once you have enabled this function. However, the results of conversion may be accepted by some DMAs only, depending on the media formats supported by your DMA.

To enable audio conversion:

  1. Select Enable audio conversion and the following checkboxes to enable converters if your DMA does not support the following audio formats: FLAC, APE, OGG, and AIFF.
  2. Select Downsample audio files during conversion to provide better DMA compatibility if you would like to reduce the data rate of audio files and provide better DMA compatibility.
  3. Click Apply.

To enable video conversion:

  1. Select Enable video conversion and enter the video file extensions to be converted.
  2. Click Apply.

Note:

  • This function is only available on certain models. Also, conversion occupies extra system resources and may lead to choppy playback. To prevent this situation, check if file formats of your videos are supported by your DMA, and only fill in those formats which are not supported.
  • The video conversion feature will be discontinued on DSM 7.2.2 and above due to the wide range of media formats supported on most end devices. This change aims to reduce unnecessary resource usage and enhance system efficiency.

To help DMA identify multimedia file formats:

  1. Select Enable customized MIME types and enter the customized MIME types.
  2. Click Apply.

About MIME Types

MIME types, also known as Internet media types, can improve the compatibility of multimedia files with DMA by specifying the type and sub-type of media files. You can customize the MIME types to help your DMA device identify the correct file formats.

To manage the list of DMA devices:

  1. Select Restrict access to Media Server for newly detected UPnP/DLNA devices if you do not wish to leave Media Server open to new devices.
  2. Click Device list to see the list of DMA devices found by Synology NAS.
  3. Do any of the following:
    • Select or deselect the checkboxes to allow or disallow the devices to access Media Server.
    • Double-click the fields under Profile and choose the correct type for your devices from the drop-down menu.
      Note: Default profile will be used if Media Server cannot identify the type of your DMA device. If your device is not listed here, you can try using Generic DLNA (for devices that support DLNA) or Generic Non-DLNA (for devices that do not support DLNA).
    • Click Refresh if you want to make sure the device list is up-to-date.
  4. Click Save and Close to save your changes and close the Device list window, or click Reset to cancel the changes and restore your previous settings.