Video Streaming at Sky

How Sky UK deliver video on Android

Video - https://skillsmatter.com/skillscasts/7427-android-video-streaming-at-sky

Transcript

1. Video Streaming at Sky Andrew Jack – Android Developer Barclays Premier League
2. 2 Delivering video
3. 3 Progressive Download
4. 4 Progressive Download
5. 5 Progressive Download
7. 7 RTSP (Real Time Streaming Protocol)
8. 8 Adaptive bitrate streaming
9. 9 Adaptive bitrate streaming Source: Adaptive bitrate streaming (Wikipedia)
10. 10 Implementations • Smooth Streaming (Microsoft) • HTTP Dynamic Streaming (Adobe) • HLS - HTTP Live Streaming (Apple - RFC) • DASH - Dynamic Adaptive Streaming over HTTP (International Standard)
11. 11 HLS in detail Source: What is HLS? (Streaming Media)
12. 12 HLS differences between Live and VOD Live • Playlist includes 5-10 chunks • Playlist needs to be refreshed every n seconds • Seek very, very limited (only inside Player buffer) VOD • Playlist includes all chunks • Playlist is downloaded once at the beginning • Seek possible (time inside asset points to .ts chunk remember: continues index between chunks
13. 13 HLS vs DASH Advantages • Enforces chuck sizes, meaning smoother & efficient bit rate switching • Native in Chrome/ Android Disadvantages • No native iOS support
14. Protecting video
15. 15 Protecting video
16. 16 Implementations
17. 17 Additional protection Watermarking Device limits & concurrent streams Region restrictions
18. 18 End to end journey
19. How do Sky do it?
20. 20 Brief History
21. 21 Now
22. 22 Video On Demand (VOD)
23. 23 Linear (Football)
24. 24 Linear (Game of Thrones)
25. How are we improving?
26. 26 Common Libraries
27. 27 Video Quality Analytics Help us to improve our configurations for: • Initial buffer time • Size of buffer • Device specific settings • ABR switching (Work with third parties)
28. 28 ABR testing tools
29. Future
30. 30 Sky Q
31. 31 Higher Definition 1080p UltraHD 720p
32. How do I stream video on ?
33. 33 Android’s support http://developer.android.com/guide/appendix/media-formats.html Streaming protocols • RTSP (RTP, SDP) • HTTP/HTTPS progressive streaming • HTTP/HTTPS live streamingdraft protocol: • MPEG-2 TS media files only • Protocol version 3 (Android 4.0 and above) • Protocol version 2 (Android 3.x) • Not supported before Android 3.0
34. 34 Android’s support Video formats • H.263 • H.264/AVC • H.265/HEVC (5.0+) • MPEG-4 SP • VP8 (2.3.3+) • VP9 (4.4+) Audio formats • AAC LC • HE-AAC v1 • HE-AACv2 • AAC ELD (4.1+) • AMR-NB • AMR-WB • FLAC (3.1+) • MP3 • ….. http://developer.android.com/guide/appendix/media-formats.html
35. 35 Playing videos on Android Four options: VideoView MediaPlayer& SurfaceView Third-party player / Native code ExoPlayer
36. 36 VideoView http://developer.android.com/reference/android/widget/VideoView.html android.widget.VideoView @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_video_view); VideoView videoView = (VideoView) findViewById(R.id.view_video); // set media controller videoView.setMediaController(new MediaController(this)); // set video stream to play videoView.setVideoURI(Uri.parse(videoUri)); // start playback videoView.requestFocus(); videoView.start(); }
37. 37 MediaPlayer & SurfaceView @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_media_player); SurfaceView surfaceView = (SurfaceView) findViewById(R.id.surface_view); SurfaceHolder holder = surfaceView.getHolder(); // create media player object final MediaPlayer mp = new MediaPlayer(); holder.addCallback(new SurfaceHolder.Callback() { @Override public void surfaceCreated(SurfaceHolder holder) { mp.setDisplay(holder); try { mp.setDataSource(videoUri); mp.prepare(); } catch (Exception e) { } mp.start(); } // ... ommitted methods for example }); } android.media.MediaPlayer android.view.SurfaceView http://developer.android.com/reference/android/media/MediaPlayer.html http://developer.android.com/reference/android/view/SurfaceView.html
38. 38 Third Party
39. 39 ExoPlayer https://github.com/google/ExoPlayer
40. 40 ExoPlayer https://github.com/google/ExoPlayer • Supports DASH, SmoothStreaming, and HLS • Customizable and extendable • Update the player with your app • Fewer device specific issues • Relies on Android’s MediaCodec api, which is available on Android 4.1, (API level 16) • 4.3 for Widevine DRM
41. Barclays Premier League
42. Thank you! developers.sky.com @workforsky Andrew Jack @andr3wjack Questions?