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Médias (1)
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MediaSPIP Simple : futur thème graphique par défaut ?
26 septembre 2013, par
Mis à jour : Octobre 2013
Langue : français
Type : Video
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Sur d’autres sites (3869)
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libavfilter/vf_dnn_detect : Add yolo support
21 novembre 2023, par Wenbin Chenlibavfilter/vf_dnn_detect : Add yolo support
Add yolo support. Yolo model doesn't output final result. It outputs
candidate boxes, so we need post-process to remove overlap boxes to
get final results. Also, the box's coordinators relate to cell and
anchors, so we need these information to calculate boxes as well.Model detail please refer to : https://github.com/openvinotoolkit/open_model_zoo/tree/master/models/public/yolo-v2-tf
Signed-off-by : Wenbin Chen <wenbin.chen@intel.com>
Reviewed-by : Guo Yejun <yejun.guo@intel.com> -
How to use FFmpeg in android to edit video ? [closed]
24 juillet 2023, par Rakesh Sainii am learning android. I tried the ffmpeg lib to merge the video and audio, but getting ffmpeg permission denied error. I search lot of but unable to find the solution.


Please anyone help if have the solution.


package com.example.mytestapp.Activity;
 
 import android.content.Context;
 import android.os.AsyncTask;
 import android.os.Environment;
 import android.util.Log;
 import com.github.hiteshsondhi88.libffmpeg.ExecuteBinaryResponseHandler;
 import com.github.hiteshsondhi88.libffmpeg.FFmpeg;
 import com.github.hiteshsondhi88.libffmpeg.exceptions.FFmpegCommandAlreadyRunningException;
 
 public class MergeAudioVideoTask extends AsyncTask {
 private static final String TAG = MergeAudioVideoTask.class.getSimpleName();
 
 private Context context;
 private String videoFilePath;
 private final String audioFilePath;
 private final String outputFilePath;
 
 public MergeAudioVideoTask(String videoFilePath, String audioFilePath, String outputFilePath) {
 this.videoFilePath = videoFilePath;
 this.audioFilePath = audioFilePath;
 this.outputFilePath = outputFilePath;
 }
 
 // String inputAudioPath = "https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3";
 String outputVideoPath = Environment.getExternalStorageDirectory() + "/trimVideos" + "sangtest.mp4";
 
 // String[] command = {"-i", vpath, "-i", inputAudioPath, "-c:v", "copy", "-c:a", "aac", "-map", "0:v:0", "-map", "1:a:0", "-shortest", outputVideoPath};
 
 
 @Override
 protected Boolean doInBackground(Void... params) {
 String[] cmd = {"-i", videoFilePath, "-i", audioFilePath, "-shortest", outputVideoPath};
 try {
 FFmpeg.getInstance(context).execute(cmd, new ExecuteBinaryResponseHandler() {
 @Override
 public void onStart() {
 Log.e("Started", "yes");
 }
 
 @Override
 public void onProgress(String message) {
 // do nothing
 }
 
 @Override
 public void onFailure(String message) {
 Log.e("Failed ", "yes");
 }
 
 @Override
 public void onSuccess(String message) {
 Log.e("Success ", "yes");
 }
 
 @Override
 public void onFinish() {
 // do nothing
 }
 });
 } catch (FFmpegCommandAlreadyRunningException e) {
 e.printStackTrace();
 }
 
 return null;
 }
 
 @Override
 protected void onPostExecute(Boolean success) {
 if (success) {
 } else {
 }
 }
 
 }


I am using this but getting 'permission denied error for ffmpeg' i have already added storage permission in manifiest.


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How to combine multiple Audio Files into single using ffmpeg_kit_flutter
17 septembre 2023, par sunil kalwaniI want to play multiple Audio files in a sequence to form a question for the users.

For that, I tried theAudioPlaypackage in the loop but they took some pause to play it in between which did not look good.

So as the alternative I want to combine audio files into a single file to play.

For that I have usedffmpeg_kit_flutterpackage, but this returns 1 which means error in merging the files.

List<string> assetAudioFiles = [
 'audio/S1B_1.mp3', // Replace with the URLs or local paths of your audio files
 'audio/L2_31.mp3',
 'audio/S1B_2.mp3',
 'audio/L1s20.mp3',
];

Future> copyAssetFilesToStorage() async {
 List<string> localFilePaths = [];

 for (String assetFile in assetAudioFiles) {
 String localFilePath = await copyAssetToFile(assetFile);
 localFilePaths.add(localFilePath);
 }

 return localFilePaths;
}
 
Future<string> copyAssetToFile(String assetFilePath) async {
 final ByteData data = await rootBundle.load(assetFilePath);
 final Directory tempDir = await getTemporaryDirectory();
 final File tempFile =
 File('${tempDir.path}/${assetFilePath.split('/').last}');
 await tempFile.writeAsBytes(data.buffer.asUint8List(), flush: true);
 return tempFile.path;
}
 
Future<void> combineAudio(List<string> audioFiles) async {
 Directory tempDir = await getTemporaryDirectory();
 String tempPath = tempDir.path;

 // Create a temporary output file path
 String combinedAudioPath = '$tempPath/output.mp3';

 // Prepare the FFmpeg command to concatenate audio files
 String inputFiles = audioFiles.join('|');

 String command =
 'ffmpeg -i "concat:$inputFiles" -acodec copy $combinedAudioPath';

 var cmd2 =
 "-i ${audioFiles[0]} -i ${audioFiles[1]} -i ${audioFiles[2]} -filter_complex [0:0][1:0][2:0]concat=n=3:v=0:a=1[out] -map [out] $combinedAudioPath";
 
 FFmpegKit.execute(cmd2).then((session) async {
 print('session $session');
 final returnCode = await session.getReturnCode();
 print('returnCode $returnCode');

 if (ReturnCode.isSuccess(returnCode)) {
 print('Audio files merged successfully $returnCode');
 // SUCCESS
 } else if (ReturnCode.isCancel(returnCode)) {
 print('isCancel $returnCode');
 // CANCEL
 } else {`enter code here`
 print('Error merging audio files: $returnCode');
 // audioPlayer.play(DeviceFileSource(outputFilePath));
 }
 });
}
 
void combineAndPlayAudio() async {
 List<string> localFilePaths = await copyAssetFilesToStorage();
 await combineAudio(localFilePaths); //localFilePaths

 // Now you can play the combined audio using an audio player or other methods.
}
</string></string></void></string></string></string>

So can you please let me know how to combine multiple audio files into single or a way to play multiple audio in sequence ?


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