Android development, mute recording video, in the premise of general definition to ensure that the smaller the file size, the better

 Public voidStartrecord () {Mediarecorder=NewMediarecorder ();//Create a Mediarecorder objectMcamera =getcamerainstance (); Parameters Parameters=mcamera.getparameters (); Mcamera.autofocus (NULL); //Unlock CameraMcamera.setdisplayorientation (90);        Mcamera.unlock ();                Mediarecorder.setcamera (Mcamera); List<Size> supportedpreviewsizes =parameters.getsupportedpreviewsizes ();  for(intI=0;i<supportedpreviewsizes.size (); i++) {LOG.V ("Startrecord", "width=" +supportedpreviewsizes.get (i). width+ "; height=" +Supportedpreviewsizes.get (i). height); }        //set the recording video source to camera//Mediarecorder.setaudiosource (MediaRecorder.AudioSource.CAMCORDER);Mediarecorder.setvideosource (MediaRecorder.VideoSource.CAMERA); //set the recording file quality, format, resolution and so on, this all includes//Mediarecorder.setprofile (Camcorderprofile.get (camcorderprofile.quality_480p)); //7.43M 10frame//Mediarecorder.setprofile (Camcorderprofile.get (camcorderprofile.quality_1080p)); //70.94M 10frame//Mediarecorder.setprofile (Camcorderprofile.get (CAMCORDERPROFILE.QUALITY_CIF)); //2.6M 5frame/10frame//Mediarecorder.setprofile (Camcorderprofile.get (CAMCORDERPROFILE.QUALITY_QCIF)); //0.76M 30frame Blur//Mediarecorder.setprofile (Camcorderprofile.get (CAMCORDERPROFILE.QUALITY_QVGA)); //2.1M//Mediarecorder.setprofile (Camcorderprofile.get (CAMCORDERPROFILE.QUALITY_TIME_LAPSE_CIF)); //not supported//Mediarecorder.setprofile (Camcorderprofile.get (Camcorderprofile.quality_low)); //766KB is better than Quality_qcif .//Mediarecorder.setprofile (Camcorderprofile.get (Camcorderprofile.quality_time_lapse_low)); //1M Quality similar to low//Mediarecorder.setprofile (Camcorderprofile.get (camcorderprofile.quality_time_lapse_480p)); //480p Effect//Mediarecorder.setaudioencoder (Mediarecorder.audioencoder.);//Mediarecorder.setvideoencoder (MediaRecorder.VideoEncoder.H264); //Boolean issupquality_time_lapse_cif = Camcorderprofile.hasprofile (CAMCORDERPROFILE.QUALITY_TIME_LAPSE_CIF); 
    //Boolean issupquality_low = Camcorderprofile.hasprofile (camcorderprofile.quality_low);//log.v ("Startrecord", "issupquality_time_lapse_cif=" +issupquality_time_lapse_cif+ "; issupquality_low=" + Issupquality_low);//        //Mediarecorder.setvideoframerate (30); //start to mute videoMediarecorder.setoutputformat (MediaRecorder.OutputFormat.MPEG_4);//mediarecorder.setvideosize (640,480);Mediarecorder.setvideosize (1280,720); //set the encoded bitrate, not set will blur the video image//mediarecorder.setvideoencodingbitrate (5*1024*1024); //Clear 512*1024 (unclear)Mediarecorder.setvideoencodingbitrate (900*1024);  Clear, and the file size is 3.26M (30 seconds) Mediarecorder.setvideoencoder (MediaRecorder.VideoEncoder.H264); H263 seems a little unclear.//Mediarecorder.setvideoframerate (10); //Invalid setting//EndMediarecorder.setpreviewdisplay (Surfaceholder.getsurface ()); //set the path of the video file outputMediarecorder.setoutputfile (Environment.getexternalstoragedirectory (). GetAbsolutePath () + "/data/data/" + System.currenttimemillis () + ". mp4"); Try {            //Prepare to recordMediarecorder.prepare (); //Start RecordingMediarecorder.start (); } Catch(Exception e) {e.printstacktrace (); }    }

In general, we directly call Mediarecorder will produce very large video files, 30 seconds for 70M, so we need to record the video as far as possible to control the size of the video file!

Mediarecorder.setvideoencodingbitrate (900*1024);   set the encoded bitrate, not set will blur the video image

Android development, mute recording video, in the premise of general definition to ensure that the smaller the file size, the better