android-studio - Android中的JavaCV

Question

我下载了 JavaCV-1-3-1。

现在我有两个问题：

1. 如何将 JavaCV 导入 Android Studio 以供使用？

2. 可以从带有 JavaCV 的 FFMPEG 命令中使用吗？

Answer 1

要导入 java cv，请将其添加到 gradle

 dependencies {
       compile 'org.bytedeco:javacv:+'
compile 'org.bytedeco.javacpp-presets:opencv:3.0.0-1.1:android-x86'
compile 'org.bytedeco.javacpp-presets:ffmpeg:2.8.1-1.1:android-x86'
compile 'org.bytedeco.javacpp-presets:opencv:3.0.0-1.1:android-arm'
compile 'org.bytedeco.javacpp-presets:ffmpeg:2.8.1-1.1:android-arm' 
    }

Answer 2

您也可以使用WritingMinds 库。这很容易实现。

依赖

编译'com.writingminds:FFmpegAndroid:0.3.2'

您可以使用execute()进行视频相关处理

示例代码

final FFmpeg ffmpeg = FFmpeg.getInstance(activity);
        try {
            ffmpeg.loadBinary(new LoadBinaryResponseHandler() {

                @Override
                public void onStart() {}
                @Override
                public void onFailure() {}
                @Override
                public void onSuccess() {

                        String cropParams = "720:754:0:172";

                        String[] cmd = {"-i"
                                , originalPath
                                , "-vf"
                                ,cropParams
                                ,"-threads"
                                ,"5"
                                ,"-preset"
                                ,"ultrafast"
                                ,croppedPath};
                        // Execute cropping of video
                        ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
                            @Override
                            public void onStart() {
                            }
                            @Override
                            public void onProgress(String message) {
                                Log.i("Square", "progress : " +message);
                            }
                            @Override
                            public void onFailure(String message) {
                                Log.i("Square", "total fail : " + message);
                            }
                            @Override
                            public void onSuccess(String message) {
                                Log.i("Square", "Cropped video created.");

                            }
                            @Override
                            public void onFinish() {

                            }
                        });
                    } catch (FFmpegCommandAlreadyRunningException e) {
                        // Handle if FFmpeg is already running
                    }
                }
            });
        } catch (FFmpegNotSupportedException e) {
            // Handle if FFmpeg is not supported by device
        }