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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
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Unable to properly save video in android ffmpeg app
22 mars 2021, par connor449I am trying to record and save a video with an ffmpeg app on android 10. I'm very new to android/mobile development.


Here is my manifest file :


<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.example.camera">
 
 
 

 


 
 <activity>
 
 
 </activity> <activity>
 
 <action></action>

 <category></category>
 
 </activity>
 


</manifest>


As you can see, I am specifying permission to read/write data.


Here is my mainActivity :


package com.example.camera

//import android.R
import android.content.DialogInterface
import android.content.pm.PackageManager
import android.os.Build
import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import com.arthenica.mobileffmpeg.FFmpeg


const val EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE"

class MainActivity : AppCompatActivity() {
 override fun onCreate(savedInstanceState: Bundle?) {
 super.onCreate(savedInstanceState)
 setContentView(R.layout.activity_main)
 if (checkPermission()) {
 //main logic or main code
 FFmpeg.execute("-f android_camera -i 0:0 -r 30 -crf 0 -pixel_format yuv420p -t 00:00:05 test.mp4")

 // . write your main code to execute, It will execute if the permission is already given.
 } else {
 requestPermission()
 }
 }

 fun sendMessage(view:android.view.View){


 }

 private fun checkPermission(): Boolean {
 return if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA)
 != PackageManager.PERMISSION_GRANTED
 ) {
 // Permission is not granted
 false
 } else true
 }

 private fun requestPermission() {
 ActivityCompat.requestPermissions(
 this, arrayOf(android.Manifest.permission.CAMERA),
 PERMISSION_REQUEST_CODE
 )
 }

 override fun onRequestPermissionsResult(
 requestCode: Int,
 permissions: Array<string>,
 grantResults: IntArray
 ) {
 when (requestCode) {
 PERMISSION_REQUEST_CODE -> if (grantResults.size > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED
 ) {
 Toast.makeText(applicationContext, "Permission Granted", Toast.LENGTH_SHORT)
 .show()

 // main logic
 } else {
 Toast.makeText(applicationContext, "Permission Denied", Toast.LENGTH_SHORT)
 .show()
 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA)
 != PackageManager.PERMISSION_GRANTED
 ) {
 showMessageOKCancel("You need to allow access permissions",
 DialogInterface.OnClickListener { dialog, which ->
 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 requestPermission()
 }
 })
 }
 }
 }
 }
 }

 private fun showMessageOKCancel(
 message: String,
 okListener: DialogInterface.OnClickListener
 ) {
 AlertDialog.Builder(this@MainActivity)
 .setMessage(message)
 .setPositiveButton("OK", okListener)
 .setNegativeButton("Cancel", null)
 .create()
 .show()
 }

 companion object {
 private const val PERMISSION_REQUEST_CODE = 200
 }
}

</string>

Here is my error message in the logs :


2021-03-22 16:31:34.509 9365-9448/com.example.camera I/AdrenoGLES: QUALCOMM build : 85037b7, I6e8b82193e
 Build Date : 12/19/19
 OpenGL ES Shader Compiler Version: EV031.27.05.03
 Local Branch : 
 Remote Branch : refs/tags/AU_LINUX_ANDROID_LA.UM.8.11.R1.10.00.00.576.016
 Remote Branch : NONE
 Reconstruct Branch : NOTHING
2021-03-22 16:31:34.509 9365-9448/com.example.camera I/AdrenoGLES: Build Config : S P 8.0.12 AArch64
2021-03-22 16:31:34.512 9365-9448/com.example.camera I/AdrenoGLES: PFP: 0x016ee187, ME: 0x00000000
2021-03-22 16:31:55.745 9365-9480/com.example.camera I/mobile-ffmpeg: ffmpeg version v4.4-dev-416
2021-03-22 16:31:55.745 9365-9480/com.example.camera I/mobile-ffmpeg: Copyright (c) 2000-2020 the FFmpeg developers
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --extra-libs='-L/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --target-os=android --enable-neon --enable-asm --enable-inline-asm --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --enable-shared --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libwavpack --enable-libkvazaar --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libaom --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-zlib --enable-mediacodec
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: libavutil 56. 55.100 / 56. 55.100
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: libavcodec 58. 96.100 / 58. 96.100
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: libavformat 58. 48.100 / 58. 48.100
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: libavdevice 58. 11.101 / 58. 11.101
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: libavfilter 7. 87.100 / 7. 87.100
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: libswscale 5. 8.100 / 5. 8.100
2021-03-22 16:31:55.746 9365-9480/com.example.camera I/mobile-ffmpeg: libswresample 3. 8.100 / 3. 8.100
2021-03-22 16:31:55.750 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1638402! count 0, type 3
2021-03-22 16:31:55.750 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1638403! count 0, type 3
2021-03-22 16:31:55.750 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1835009! count 0, type 3
2021-03-22 16:31:55.750 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1835010! count 0, type 3
2021-03-22 16:31:55.750 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1638407! count 0, type 3
2021-03-22 16:31:55.750 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1638408! count 0, type 0
2021-03-22 16:31:55.751 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1638402! count 0, type 3
2021-03-22 16:31:55.751 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1638403! count 0, type 3
2021-03-22 16:31:55.751 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1835009! count 0, type 3
2021-03-22 16:31:55.751 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1835010! count 0, type 3
2021-03-22 16:31:55.751 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1638407! count 0, type 3
2021-03-22 16:31:55.751 9365-9365/com.example.camera E/ACameraMetadata: filterDurations: malformed duration key 1638408! count 0, type 0
2021-03-22 16:31:55.797 9365-9480/com.example.camera W/mobile-ffmpeg: [android_camera @ 0x726794b600] Requested video_size 0x0 not available, falling back to 4608x3456
2021-03-22 16:31:55.804 9365-9480/com.example.camera I/mobile-ffmpeg: [android_camera @ 0x726794b600] Android camera capture session is active.
2021-03-22 16:31:56.097 9365-9480/com.example.camera I/mobile-ffmpeg: Input #0, android_camera, from '0:0':
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: Duration: 
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: N/A
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: , start: 
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: 28486.157692
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: , bitrate: 
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: N/A
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: Stream #0:0
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: : Video: rawvideo (NV21 / 0x3132564E), nv21, 4608x3456
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: , 
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: 30 fps, 
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: 30 tbr, 
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: 1000000000.00 tbn, 
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: 1000000000.00 tbc
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: Side data:
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: 
2021-03-22 16:31:56.098 9365-9480/com.example.camera I/mobile-ffmpeg: displaymatrix: rotation of -90.00 degrees
2021-03-22 16:31:56.098 9365-9480/com.example.camera W/mobile-ffmpeg: Codec AVOption crf (Select the quality for constant quality mode) specified for output file #0 (test.mp4) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
2021-03-22 16:31:56.098 9365-9480/com.example.camera E/mobile-ffmpeg: test.mp4: Read-only file system
2021-03-22 16:31:56.259 9365-9392/com.example.camera D/ACameraDevice: Device error received, code 5, frame number 1, request ID 0, subseq ID 0
2021-03-22 16:31:56.260 9365-9666/com.example.camera D/ACameraDevice: Device error received, code 5, frame number 2, request ID 0, subseq ID 0
2021-03-22 16:31:56.260 9365-9666/com.example.camera D/ACameraDevice: Device error received, code 5, frame number 3, request ID 0, subseq ID 0
2021-03-22 16:31:56.260 9365-9666/com.example.camera D/ACameraDevice: Device error received, code 3, frame number 4, request ID 0, subseq ID 0
2021-03-22 16:31:56.260 9365-9666/com.example.camera D/ACameraDevice: Device error received, code 3, frame number 5, request ID 0, subseq ID 0
2021-03-22 16:31:56.261 9365-9666/com.example.camera D/ACameraDevice: Device error received, code 3, frame number 6, request ID 0, subseq ID 0
2021-03-22 16:31:56.607 9365-9365/com.example.camera W/ACameraCaptureSession: Device is closed but session 0 is not notified
2021-03-22 16:31:56.608 9365-9480/com.example.camera I/mobile-ffmpeg: [android_camera @ 0x726794b600] Android camera capture session was closed.
2021-03-22 16:31:56.637 9365-9365/com.example.camera I/Choreographer: Skipped 58 frames! The application may be doing too much work on its main thread.
2021-03-22 16:31:56.678 9365-9448/com.example.camera I/OpenGLRenderer: Davey! duration=1018ms; Flags=1, IntendedVsync=17591318171185, Vsync=17592284837813, OldestInputEvent=9223372036854775807, NewestInputEvent=0, HandleInputStart=17592296938401, AnimationStart=17592297214183, PerformTraversalsStart=17592304079965, DrawStart=17592327848144, SyncQueued=17592334185436, SyncStart=17592334982572, IssueDrawCommandsStart=17592335124343, SwapBuffers=17592336519968, FrameCompleted=17592337443926, DequeueBufferDuration=165000, QueueBufferDuration=255000, 


The error I'm particularity confused about is :


2021-03-22 16:31:56.098 9365-9480/com.example.camera E/mobile-ffmpeg: test.mp4: Read-only file system


I thought I specified the appropriate permissions in the manifest file ? Please advise.


-
How to stream a usb webcam to an android phone with ffmpeg and ffserver ?
26 juillet 2015, par victor jungI am desperately trying to live stream the usb webcam from a linux computer to my android phone.
I tried with ffmpeg and ffserver, to create the stream and with videoview in android to display it. I tried all the possible format/encoder/protocols possibilities but nothing worked. In most case I am able to open the stream in VLC in another PC, but I was never able to play on my phone. I always get this error :
"can’t play this video"
Here is my app code :package com.example.victor.videostream;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.net.Uri;
import android.widget.MediaController;
import android.widget.VideoView;
public class MainActivity extends Activity
{
VideoView videoView;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
videoView = null;
setContentView(R.layout.activity_main);
videoView =(VideoView)findViewById(R.id.VideoView);
MediaController mediaController= new MediaController(this);
mediaController.setAnchorView(videoView);
Uri uri = Uri.parse("http://host:port/mystream.3gp");
videoView.setMediaController(mediaController);
videoView.setVideoURI(uri);
videoView.requestFocus();
videoView.start();
}
}I read here
about god encoding practice for android, but even with .3gp format encoded with mpeg4 as suggested it doesn’t work. Have any body once succeeded doing this ?
I am also up to discover other possibilities to stream this webcam to my android if you have any ideas.
this is the closest post I found but no solution...
Hope somebody can help !
thanks for reading. -
Error with ffmpeg in android (java.lang.UnsatisfiedLinkError)
12 janvier 2015, par Hussnain MuaviaI am facing this java.lang.UnsatisfiedLinkError in android. While i have also androidndk and other essential parts required for running ffmpeg in android like jni folder files ffmped, armeabi, build_ files etc. I have figured it out a lot of time but its not fixed yet. Please guide me about my problem.
This is my basic codepublic class MainActivity extends Activity {
static {
System.loadLibrary("ffmpeg");
System.loadLibrary("ffmpeg-test-jni");
}
TextView text_titlebar_text;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text_titlebar_text = (TextView) findViewById(R.id.tvView);
showVideoInfo(new File(Environment.getExternalStorageDirectory().getAbsoluteFile()+ "/video.mp4"));
}
//declare the jni functions
private static native void naInit(String _videoFileName);
private static native int[] naGetVideoResolution();
private static native String naGetVideoCodecName();
private static native String naGetVideoFormatName();
private static native void naClose();
private void showVideoInfo(final File _file) {
String videoFilename = _file.getAbsolutePath();
naInit(videoFilename);
int[] prVideoRes = naGetVideoResolution();
String prVideoCodecName = naGetVideoCodecName();
String prVideoFormatName = naGetVideoFormatName();
naClose();
String displayText = "Video: " + videoFilename + "\n";
displayText += "Video Resolution: " + prVideoRes[0] + "x" + prVideoRes[1] + "\n";
displayText += "Video Codec: " + prVideoCodecName + "\n";
displayText += "Video Format: " + prVideoFormatName + "\n";
text_titlebar_text.setText(displayText);
}}
and this is a LogCat
01-01 07:04:18.862: E/AndroidRuntime(4653): FATAL EXCEPTION: main
01-01 07:04:18.862: E/AndroidRuntime(4653): java.lang.UnsatisfiedLinkError: Couldn't load ffmpeg from loader dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.example.testone-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.testone-1, /vendor/lib, /system/lib]]]: findLibrary returned null
01-01 07:04:18.862: E/AndroidRuntime(4653): at java.lang.Runtime.loadLibrary(Runtime.java:366)
01-01 07:04:18.862: E/AndroidRuntime(4653): at java.lang.System.loadLibrary(System.java:514)
01-01 07:04:18.862: E/AndroidRuntime(4653): at com.example.testone.MainActivity.<clinit>(MainActivity.java:16)
01-01 07:04:18.862: E/AndroidRuntime(4653): at java.lang.Class.newInstanceImpl(Native Method)
01-01 07:04:18.862: E/AndroidRuntime(4653): at java.lang.Class.newInstance(Class.java:1319)
01-01 07:04:18.862: E/AndroidRuntime(4653): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
01-01 07:04:18.862: E/AndroidRuntime(4653): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2260)
01-01 07:04:18.862: E/AndroidRuntime(4653): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395)
01-01 07:04:18.862: E/AndroidRuntime(4653): at android.app.ActivityThread.access$600(ActivityThread.java:162)
01-01 07:04:18.862: E/AndroidRuntime(4653): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
01-01 07:04:18.862: E/AndroidRuntime(4653): at android.os.Handler.dispatchMessage(Handler.java:107)
01-01 07:04:18.862: E/AndroidRuntime(4653): at android.os.Looper.loop(Looper.java:194)
01-01 07:04:18.862: E/AndroidRuntime(4653): at android.app.ActivityThread.main(ActivityThread.java:5371)
01-01 07:04:18.862: E/AndroidRuntime(4653): at java.lang.reflect.Method.invokeNative(Native Method)
01-01 07:04:18.862: E/AndroidRuntime(4653): at java.lang.reflect.Method.invoke(Method.java:525)
01-01 07:04:18.862: E/AndroidRuntime(4653): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
01-01 07:04:18.862: E/AndroidRuntime(4653): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
01-01 07:04:18.862: E/AndroidRuntime(4653): at dalvik.system.NativeStart.main(Native Method)
01-01 07:04:18.921: E/AppErrorDialog(496): Failed to get ILowStorageHandle instance
</clinit>
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