Build a video streaming app

Presentation from Droidcon UK 2015

https://twitter.com/andr3wjack
https://twitter.com/workforsky
Code - https://github.com/sky-uk/droidcon-streaming-app
Video - https://skillsmatter.com/conferences/6712-droidcon-2015#program

Transcript

1. Build your own video streaming app! Andrew Jack Software Engineer at Sky Star Wars: A New Hope
3. Delivering video content
4. 4 Delivering video content
5. Streaming video content
6. 6 Streaming video content Progressive streaming • Download file from start to finish Streaming network protocols • RTSP - Real Time Streaming Protocol Adaptive Bitrate streaming over HTTP • Smooth Streaming • Adobe HTTP Dynamic Streaming • HLS - HTTP Live Streaming • DASH - Dynamic Adaptive Streaming over HTTP
7. 7 Adaptive bitrate streaming over HTTP
8. Protecting video content
9. 9 Protecting video content
10. Consuming video on Android
11. 11 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
12. 12 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
13. 13 Playing videos on Android Four options: VideoView MediaPlayer& SurfaceView Third-party player / Native code ExoPlayer
14. 14 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(); }
15. 15 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
16. 16 Under the hood https://source.android.com/devices/media
17. 17 Third Party
18. 18 Versions http://developer.android.com/about/dashboards
19. ExoPlayer https://github.com/google/ExoPlayer
20. 20 ExoPlayer https://github.com/google/ExoPlayer Pros • Supports DASH, SmoothStreaming, and HLS • Customizable and extendable • Update the player with your app • Fewer device specific issues Cons • Relies on Android’s MediaCodec api, which is available on Android 4.1, (API level 16) • 4.3 for Widevine DRM
21. Demo!
22. github.com/sky-uk/droidcon-streaming-app http://goo.gl/jvLzLW
23. Questions?
24. Thank you! @workforsky Andrew Jack @andr3wjack