视频播放：
reference address:
http://developer.android.com/guide/appendix/media-formats.html#core
http://developer.android.com/guide/appendix/media-formats.html#recommendations
http://developer.android.com/guide/appendix/media-formats.html
https://www.google.pt
Table 1: Supported Video Format for Android
|
Android Supported Video Format/Codec |
Supported Video File Types/Container Formats |
Details |
|
H.263 |
• 3GPP (.3gp) • MPEG-4 (.mp4) |
|
|
H.264 AVC |
• 3GPP (.3gp) • MPEG-4 (.mp4) • MPEG-TS (.ts, AAC audio only, not seekable, Android 3.0+) |
Baseline Profile (BP) |
|
MPEG-4 SP |
•3GPP (.3gp) |
|
|
VP8 |
• WebM (.webm) • Matroska (.mkv, Android 4.0+) |
Streamable only in Android 4.0 and above |
Tips: for more information about audio and image formats compatible with Android, please see the following:
• Supported Audio formats: MP3, 3GP, MP4, M4A, AAC, WAV, TS, FLAC, OGG, MID, XMF, MXMF, RTTTL, RTX, OTA, IMY.
• Supported Image formats: JPG, GIF, PNG, BMP, WEBP.
Now that you‘ve had a clear understanding of the android supported video file formats, let’s move to the next section of recommended video encoding profiles and parameters that the Android devices support for playback. Only if you are skilled in the encoding parameters for Android recognized video, can you play videos on Android without going awry. To twist the video encoding parameters to best suit your Android phones and tablets, you can count on video converter software to fulfill the needs.
Table 2: Video Encoding Parameter Recommendations for Android
|
SD (Low quality) |
SD (High quality) |
HD (Only available on some devices) |
|
|
Video resolution |
176 x 144 px |
480 x 360 px |
1280 x 720 px |
|
Video codec |
H.264 Baseline Profile |
H.264 Baseline Profile |
H.264 Baseline Profile |
|
Video frame rate |
12 fps |
30 fps |
30 fps |
|
Video bitrate |
56 Kbps |
500 Kbps |
2 Mbps |
|
Audio bitrate |
24 Kbps |
128 Kbps |
192 Kbps |
|
Audio codec |
AAC-LC |
AAC-LC |
AAC-LC |
|
Audio channels |
1 (mono) |
2 (stereo) |
2 (stereo) |
example codes:
Summary:
- H.264 Baseline Profile, 480 x 360 px, 30 fps, 500 Kbps
- AAC-LC, Stereo, 128 Kbps
this.mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
this.mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
this.mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
this.mediaRecorder.setMaxDuration(10000);
this.mediaRecorder.setOutputFile(this.initFile().getAbsolutePath());
this.mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
this.mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
this.mediaRecorder.setVideoSize(640,480);
this.mediaRecorder.setVideoFrameRate(12);
try {
this.mediaRecorder.setPreviewDisplay(this.cameraPreview.getHolder().getSurface());
this.mediaRecorder.prepare();
// start the actual recording
// throws IllegalStateException if not prepared
this.mediaRecorder.start();
Toast.makeText(this, R.string.recording, Toast.LENGTH_SHORT).show();
// enable the stop button by indicating that we are recording
this.toggleButtons(true);
} catch (Exception e) {
Log.wtf(TAG, "Failed to prepare MediaRecorder", e);
Toast.makeText(this,"record nathi thatu...", Toast.LENGTH_SHORT).show();
this.releaseMediaRecorder();
}