Like WebVTT thumbnails, I-Frame thumbnails are also used to show previews of the stream using the time slider/progress bar.
- The Thumbnail Seeking I-Frame example code project.
- A test stream with
#EXT-X-I-FRAME-STREAM-INFplaylists included. The thumbnails example code project provides an example stream.
To present I-Frame thumbnails to your user, you simply need to create an instance of
OTVThumbnailView, passing it the stream URL that your
OTVAVPlayer is (or will be) playing.
OTVThumbnailView is only intended for use with streams that have
#EXT-X-I-FRAME-STREAM-INF playlists as these define where the I-Frames are in the stream. Immediately after initialisation the function will always return false. If
#EXT-X-I-FRAME-STREAM-INF playlists are present, the
OTVThumbnailView will report
true from its
hasThumbnails() function once it has determined that they are present (which is an asynchronous operation).
Presenting the thumbnail to the user
See Presenting thumbnails to the user for details of how the example code presents thumbnails to the user.
The thumbnail needs to be updated in the
timeSliderDidChange function, which in the case of I-Frame thumbnails simply means calling the thumbnail view's
Note that you cannot create an
OTVThumbnailViewin storyboard or interface builder as it needs to be initialised with a stream URL.
If the stream you are using with
OTVThumbnailView is encrypted, you will need to have setup a license delegate with the SDK in the same way as for playback of the encrypted stream.