Asset Preview

Preview and test asset playback with URL parameters directly in the Uplynk CMS.

You can preview your asset within the Uplynk platform. This allows you to test and verify your asset, including URL parameters, before deploying it in a production environment.

Using the developer tools built into your web browser, you can view the actual HTTP requests for playback with your desired URL parameters and the returned manifests.

Test Video Playback in the Uplynk CMS

To play back an asset in the Uplynk CMS:

  1. Go to the asset details page.
Asset details page with the Content menu and Details tab highlighted
  1. At the top-right, observe the image under Asset Preview and hover the cursor over it.
Asset Preview panel highlighted with the play icon visible over the video
  1. If there is no Play icon in the image, the poster image is being displayed. To switch to the video player, move your cursor over the image and a Show Player button will appear. If it does not appear, select the image to force CMS window focus. Select the Show Player button and the Play icon will appear on the image.
  2. Enter any desired Uplynk URL parameters in the Params box and select the Reload Player w/ Params button to its right. Uplynk URL parameters are described in Customizing Playback (Playback Customization Parameters).
Params box and Reload Player w/ Params button highlighted on the asset's Asset Preview panel
  1. Select the Play icon on the image.

Viewing VOD Asset Manifests

The instructions below are for Google Chrome, but Apple Safari and Microsoft Edge are similar.

To view the HTTP requests to Uplynk and the returned manifests:

  1. In the browser menu, select View->Developer->Developer Tools.
Chrome View menu open over the asset details page with Developer Tools selected under the Developer submenu
  1. In the Developer Tools, select the Network tab.
Developer Tools open beside the asset page with the Network tab highlighted
  1. To make it easier to see the new HTTP calls for manifests, enter m3u8 in the filter box and select the Clear network log icon.
Developer Tools Network tab with m3u8 entered in the filter box and the Clear network log icon highlighted
  1. Select the Reload Player w/ Params button to force a reload of the VOD manifest in the CMS. The manifest calls will appear in the Developer Tools. The first 200 return is the top-level manifest.
Reload Player w/ Params selected in the CMS, with the resulting m3u8 manifest calls in the browser network log
  1. Select the top-level manifest call to view the HTTP headers on the Headers tab.
Headers tab in Developer Tools showing the general, response and request headers for the top-level manifest call
  1. Select the Payload tab to view the URL parameters.
Payload tab in Developer Tools listing the manifest request's query string parameters
  1. Select the Response tab to view the HLS manifest.
Response tab in Developer Tools showing the top-level HLS manifest

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