media-player

I am working on a h264 video codec. I want to know: Is a single NAL unit in H264 equivalent to one video frame? No, a sequence of NAL units can be decoded into video frames, but they are not equivalent. http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC http://en.wikipedia.org/wiki/Network_Abstraction_Layer#NAL_Units_in_Byte-Stream_Format_Use http://wiki.multimedia.cx/index.php?title=H.264 来源： https://stackoverflow.com/questions/6858991/in-h264-nal-units-means-frame

I have a video file and I want to get width and height of video. I don't want to play it, just to get size. I've tried to use MediaPlayer: MediaPlayer mp = new MediaPlayer(); mp.setDataSource(uriString); mp.prepare(); int width = mp.getVideoWidth(); int height = mp.getVideoHeight(); but it returns 0 for width and height, because VideoSizeChangedEvent didn't fire yet. How can I get width and height of video? UPD: I need API version 7 This works in API level 10 and up: MediaMetadataRetriever retriever = new MediaMetadataRetriever(); retriever.setDataSource("/path/to/video.mp4"); int width =

I am passing a URI to the setDataSource method of the MediaPlayer object. I am targeting api version less than 14, so believe that I cannot use the new method that allows headers to be included. How can I include headers (specifically, authentication header) with the MediaPlayer request and still support older Android devices? My code looks like: mediaPlayer.setDataSource(url); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.prepareAsync(); Background: The method setDataSource(Context context, Uri uri, Map<String, String> headers) has been included in the SDK (marked as

I am working on an app with recorder and player. I am using mediaplayer to play the recorded .wav file and meantime I want to update to a seekbar. Everything is working fine But my problem is mediaplayer progress updation to seekbar is not happening smoothly, If we are playig a small file, thumb of the seekbar jumps in seconds or between. Can anyone help me with a workaround to make it smooth seeking of the progress in seekbar. My code is shown below.I am totlay stuck here. mediaPlayerIntiate(); mediaPlayerSetSource(); mMediaPlayer.start(); task = new TimerTask() { @Override public void run()

I need to get the duration of an audio file for a series of voice announcements that need to play from an app. I have added the audio files as resources and they do play just fine. The sample code below actually works perfect for its intended purpose: it does return the duration of the audio files. Here is the code: float getDurationOfAudioResource(LocationEnum loc, Context context){ float duration = 0; try { MediaPlayer mp; mp = MediaPlayer.create(context, getAudioResource(loc)); duration = mp.getDuration(); mp.release(); mp = null; } catch (IllegalStateException e) {e.printStackTrace();

I'm using Android's MediaPlayer to play MP3 files that are simultaneously downloaded from the internet using the DownloadManager . I'm aware of the MediaPlayer 's capability to stream directly, but I don't want to use that: The obvious advantage you get by downloading and simultaneously streaming from file is that this way, the file gets stored and is available locally afterwards. This works in principle - the MediaPlayer starts to play the file even if it not fully downloaded. (BTW my problem is NOT that I can't get MediaPlayer to play.) The problem is that when the MediaPlayer gets to the

I have a audio streaming app, which runs a local proxy server. The local proxy server makes a http connection to a internet streaming source, gets and buffers locally the streaming data. Then, inside in the app, I use MediaPlayer to connect to the local proxy server, using the method mediaPlayer.setDataSource(...); // the url of the local proxy server Everything was fine (with plenty of Android devices and different OS versions - 1.5...4.0), until Nexus 7 release. In Nexus 7, the media player refuses to play the source from the local proxy server. When I took a look at the logs, seems like the