Android视频播放,选择,压缩,上传
参考:
视音频编解码技术零基础学习方法
Android 集成 FFmpeg (一) 基础知识及简单调用
从零开始仿写一个抖音App——开始
【Android 进阶】仿抖音系列之翻页上下滑切换视频(一)
自定义视频选择器:
Android简单实现本地图片和视频选择器功能
视频播放库:
JiaoZiVideoPlayer -- 视频播放器,自定义更好
GSYVideoPlayer -- 视频播放器,功能完善,更强大(本项目所用)
ijkplayer -- Android/iOS video player based on FFmpeg n3.4, with MediaCodec, VideoToolbox support.
压缩库相关:
VideoProcessor -- 视频压缩,体积小,速度快
VideoCompressor -- 比VideoProcessor还快,但是没有进度回调
FFmpeg -- 视频压缩 体积大,压缩时间长,功能完善强大
FFmpegAndroid -- android端基于FFmpeg
FFMPEG-AAC-264-Android-32-64 -- 编译好的ffmpeg压缩aar
FFmpegDemo --lastYear使用FFmpeg压缩的Demo
SiliCompressor -- 保证质量,但只能压缩,不能控制码率和进度
android视频压缩七牛sdk -- 要收费,废弃
small-video-record -- 采用FFmpeg,3.1k 的star
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1.获取本地视频:
Android 从系统媒体库中选择视频
权限获取后选择视频
AndPermission.with(this) .runtime() .permission(Permission.Group.STORAGE) .onGranted(permissions -> { Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Video.Media.EXTERNAL_CONTENT_URI); startActivityForResult(intent, SELECT_VIDEO_REQUEST_CODE); }) .onDenied(permissions -> { ToastUtil.showLong("你取消了,需要同意权限方可读取视频文件!"); }) .start();
拿到视频路径后传递给需要用到的页面
@Override public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == SELECT_VIDEO_REQUEST_CODE&& resultCode == RESULT_OK && null != data) { Uri selectedVideo = data.getData(); String[] filePathColumn = { MediaStore.Video.Media.DATA }; Cursor cursor = _mActivity.getContentResolver().query(selectedVideo , filePathColumn, null, null, null); cursor.moveToFirst(); int columnIndex = cursor.getColumnIndex(filePathColumn[0]); String videoPath = cursor.getString(columnIndex); cursor.close(); start(UpVideoFragment.newInstance(videoPath)); } }
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2.显示视频第一帧:
获取视频的第一帧,网络视频,直接用Glide加载就好,本地视频:
android 获取视频第一帧作为缩略图
获取第一帧视频异常
Uri
的获取需要使用FileProvider
的方式
Uri videoUri = FileProvider.getUriForFile(_mActivity, AppUtils.getAppPackageName() + ".fileprovider", new File(videoPath));
然后把此uri
进行获取第一帧
private Bitmap getVideoThumb(Context context, Uri uri) { MediaMetadataRetriever media = new MediaMetadataRetriever(); media.setDataSource(context,uri); return media.getFrameAtTime(); }
或者:
Bitmap videoThumbnail = ThumbnailUtils.createVideoThumbnail(videoPath, MediaStore.Video.Thumbnails.MICRO_KIND);
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3.获取视频大小:
就是获取文件的大小
private static long getFileSize(File file) throws Exception { long size = 0; if (file.exists()) { FileInputStream fis = new FileInputStream(file); size = fis.available(); } else { ToastUtil.showShort("文件不存在!"); } return size; }
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4.获取视频时长:
Android获取视频音频的时长的方法
//获取视频时长,这里获取的是毫秒 private int getVideoTime(Context context, Uri uri){ try { MediaPlayer mediaPlayer = new MediaPlayer(); mediaPlayer.setDataSource(context,uri); mediaPlayer.prepare(); int duration = mediaPlayer.getDuration(); return duration; } catch (IOException e) { e.printStackTrace(); } return 0; }
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4.1获取视频的宽高和比特率,本地路径视频
MediaMetadataRetriever retriever = new MediaMetadataRetriever();retriever.setDataSource(videoPath);int originWidth = Integer.parseInt(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH));int originHeight = Integer.parseInt(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT));int bitrate = Integer.parseInt(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_BITRATE));
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4.2MediaInfo获取视频信息(帧率,时长,大小等)
https://www.jianshu.com/p/069bcef954f4
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5.自定义视频选择器
参考:
Android简单实现本地图片和视频选择器功能
Android 多媒体:MediaProvider、MediaStore
ContentResolver query 参数详解
Android利用ContentResolver查询的三种方式
Android_优化查询加载大数量的本地相册图片
主要是通过ContentResolver.query
来查询本地视频:
//获取本地视频数据,查询出本地mp4,以时间倒序排列 private List getLocalVideo(int limit) { List videos = new ArrayList<>(); String[] projection = new String[]{ MediaStore.Video.Media.DATA, MediaStore.Video.Media.DURATION, MediaStore.Video.Media._ID, MediaStore.Video.Media.DISPLAY_NAME, MediaStore.Video.Media.SIZE, MediaStore.Video.Media.DATE_MODIFIED}; ContentResolver resolver = _mActivity.getContentResolver(); Cursor cursor = resolver.query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, projection, MediaStore.Video.Media.MIME_TYPE + "=?", new String[]{"video/mp4"}, MediaStore.Video.Media.DATE_MODIFIED+" DESC limit "+limit); while (cursor.moveToNext()){ String path = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA)); long id = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media._ID)); long duration = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DURATION)); String name = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DISPLAY_NAME)); long size = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.SIZE)); long date = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATE_MODIFIED)); LocalVideo localVideo = new LocalVideo.Builder() .path(path) .id(id) .duration(duration) .name(name) .size(size) .date(date).build(); videos.add(localVideo); } for (LocalVideo video : videos) { L.e(video.toString()); } return videos; }
优化一:异步的方式查询:
//异步查询,加载第一页 QueryHandler mQueryHandler = new QueryHandler(_mActivity.getContentResolver()); mQueryHandler.startQuery(0,null,MediaStore.Video.Media.EXTERNAL_CONTENT_URI, null, MediaStore.Video.Media.MIME_TYPE + "=?", new String[]{"video/mp4"}, MediaStore.Video.Media.DATE_MODIFIED+" DESC limit "+limit);
优化二:进一步优化,采用分页查询
private void queryLocalVideo() { mQueryHandler.startQuery(0,null, MediaStore.Video.Media.EXTERNAL_CONTENT_URI, null, MediaStore.Video.Media.MIME_TYPE + "=?", new String[]{"video/mp4"}, MediaStore.Video.Media.DATE_MODIFIED+" DESC limit "+limit+" offset "+(page-1)*limit); }
优化三:查询条件过滤,只查询15秒以内的视频文件
private void queryLocalVideo() { mQueryHandler.startQuery(0,null, MediaStore.Video.Media.EXTERNAL_CONTENT_URI, null, MediaStore.Video.Media.MIME_TYPE + "=? and " + MediaStore.Video.Media.DURATION+" < ?", new String[]{"video/mp4","16000"}, MediaStore.Video.Media.DATE_MODIFIED+" DESC limit "+limit+" offset "+(page-1)*limit); }
最后查询结果的回调处理:
//写一个异步查询类 private final class QueryHandler extends AsyncQueryHandler { public QueryHandler(ContentResolver cr) { super(cr); } @Override protected void onQueryComplete(int token, Object cookie, Cursor cursor) { super.onQueryComplete(token, cookie, cursor); if (cursor==null)return; List videos = new ArrayList<>(); while (cursor.moveToNext()){ String path = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA)); long id = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media._ID)); long duration = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DURATION)); String name = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DISPLAY_NAME)); long size = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.SIZE)); long date = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATE_MODIFIED)); LocalVideo localVideo = new LocalVideo.Builder() .path(path) .id(id) .duration(duration) .name(name) .size(size) .date(date).build(); videos.add(localVideo); } mAdapter.addData(videos); mAdapter.loadMoreComplete(); } }
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6.视频的压缩
我采用的VideoProcessor
压缩工具:
VideoProcessor -- 视频压缩,体积小,速度快
FFmpeg -- 视频压缩 体积大,功能完善强大
参考:
Android本地视频压缩方案 --使用的ffmpeg-android-java
码率(Bitrate)、帧率(FPS)、分辨率和清晰度的联系与区别
坑:
a.用VideoProcessor
压缩时输出路径对应的文件夹不存在的话,不报错也没有任何反应。所以要确定videoOutCompressPath
这个路径上的文件夹确实存在。
b.如果不配置宽高和码率(Bitrate)的话,有的小文件越压缩越大
c.要开启一个子线程来压缩这个视频
//压缩视频 private void compressVideo(String videoPath){ mBinding.progressBar.setVisibility(View.VISIBLE); new Thread(new Runnable() { @Override public void run() { try { MediaMetadataRetriever retriever = new MediaMetadataRetriever(); retriever.setDataSource(videoPath); int originWidth = Integer.parseInt(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH)); int originHeight = Integer.parseInt(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT)); int bitrate = Integer.parseInt(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_BITRATE)); L.e("originWidth="+originWidth+" originHeight=="+originHeight+" bitrate=="+bitrate); String videoOutCompressPath = getVideoOutCompressPath(videoPath); VideoProcessor.processor(_mActivity) .input(videoPath) .bitrate(bitrate / 2) .output(videoOutCompressPath) .progressListener(new VideoProgressListener() { @Override public void onProgress(float progress) { int intProgress = (int) (progress * 100); Message message = mHandler.obtainMessage(); message.what=0; message.arg1 = intProgress; mHandler.sendMessage(message); if (intProgress==100){ message.what=1; message.obj = videoOutCompressPath; mHandler.sendMessage(message); } } }) .process(); } catch (Exception e) { e.printStackTrace(); } } }).start(); } private Handler mHandler = new Handler(new Handler.Callback() { @Override public boolean handleMessage(Message msg) { switch (msg.what) { case 0: mBinding.progressBar.setProgress(msg.arg1); break; case 1: mBinding.progressBar.setVisibility(View.INVISIBLE); ToastUtil.showLong("压缩完成!"); String videoOutCompressPath = (String) msg.obj; L.e("压缩后大小=="+ FormatUtils.formatSize(VideoUtils.getFileSize(new File(videoOutCompressPath)))); break; } return false; } });
测试:
录制5分钟4k高清视频:
fileSize==1.58 GBvideoTime==300秒originWidth=3840 originHeight==2160 bitrate==42201919压缩后大小==796 MB
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7.视频的录制
Android自定义视频录制
Android 使用系统相机录制视频查看视频
首先要申请权限
//开始录像 private void startVideoTape() { AndPermission.with(this) .runtime() .permission(Permission.Group.CAMERA) .onGranted(permissions -> startSystemRecord()) .onDenied(permissions -> ToastUtil.showLong(getString(R.string.need_record_permission))) .start(); }
然后开始录制,并限制时长5分钟
//调用系统的录制视频 private void startSystemRecord(){ Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE); //限制时长s intent.putExtra(MediaStore.EXTRA_DURATION_LIMIT, 5*60); //限制大小 intent.putExtra(MediaStore.EXTRA_SIZE_LIMIT, 30*1024*1024); //设置质量 intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1); //设置输出位置 intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.parse(SdUtils.getCameraPath() +"antvideo"+File.separator+System.currentTimeMillis()+".mp4")); startActivityForResult(intent, 1); }
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8.视频上传
使用Retrofit
框架进行上传,那么请求体就是关键,一般使用POST
请求方式
首先定义一个接口
//视频发布接口 @POST(VIDEO_POST_VIDEO) Observable> postVideo(@Body RequestBody request);
然后对其进行实现
@Override public Observable> postVideo(RequestBody request) { return bindIoUI(videoApi.postVideo(request)); }
最后上传的请求体是需要自己组装的,包含了上传视频的相关参数,视频的缩量图,和视频本身
/** * 发布视频 * private String title;//视频标题 * private String cat_id;//视频分类 * private String track_id;//视频所属赛道id * private File image_url;//视频缩略图 * private File path;//视频地址 * private int width;//视频宽度 * private int height;//视频高度 * private int duration;//视频时长 */ private void upVideo() { dialogProgress.show(); //其他参数键值对的组装 String title = mBinding.etTitle.getText().toString(); Map map = new HashMap<>(); map.put("title",title); map.put("cat_id",cat_id+""); if (track_id != -1)map.put("track_id",track_id+""); map.put("width",videoWidth+""); map.put("height",videoHeight+""); map.put("duration",videoDuration+""); //视频各个参数 MultipartBody.Builder builder = new MultipartBody.Builder(); builder.setType(MultipartBody.FORM); for (String key:map.keySet()) builder.addFormDataPart(key,map.get(key)); //图片流和视频流 builder.addFormDataPart("image_url",getFileName(videoImgPath), RequestBody.create(MediaType.parse("application/octet-stream"),new File(videoImgPath))); builder.addFormDataPart("path",getFileName(videoUploadPath), RequestBody.create(MediaType.parse("application/octet-stream"),new File(videoUploadPath))); //用FileRequestBody进行包装,以监听上传进度 FileRequestBody body = new FileRequestBody(builder.build(), (currentLength, contentLength) -> { int progress = FormatUtils.getProgress(currentLength, contentLength); Message message = mHandler.obtainMessage(); message.what = 2; message.arg1 = progress; mHandler.sendMessage(message); }); dataProvider.video.postVideo(body).subscribe(new OnSuccessAndFailListener>() { @Override protected void onSuccess(BaseResponse baseResponse) { BaseErrResponse data = baseResponse.getData(); ToastUtil.showLong(data.getMessage()); pop(); } }); }
其中FileRequestBody
是对RequestBody
的一层封装,主要是为了监听上传的进度进行回调
/** * MyApplication -- com.smallcake.okhttp * Created by Small Cake on 2017/9/8 17:52. */public class FileRequestBody extends RequestBody { private RequestBody mRequestBody; private LoadingListener mLoadingListener; private long mContentLength; public FileRequestBody(RequestBody requestBody, LoadingListener loadingListener) { mRequestBody = requestBody; mLoadingListener = loadingListener; } //total length @Override public long contentLength() { try { if (mContentLength == 0) mContentLength = mRequestBody.contentLength(); return mContentLength; } catch (IOException e) { e.printStackTrace(); } return -1; } @Override public MediaType contentType() { return mRequestBody.contentType(); } @Override public void writeTo(BufferedSink sink) throws IOException { ByteSink byteSink = new ByteSink(sink); BufferedSink mBufferedSink = Okio.buffer(byteSink); mRequestBody.writeTo(mBufferedSink); mBufferedSink.flush(); } private final class ByteSink extends ForwardingSink { private long mByteLength = 0L; ByteSink(Sink delegate) { super(delegate); } @Override public void write(Buffer source, long byteCount) throws IOException { super.write(source, byteCount); mByteLength += byteCount; mLoadingListener.onProgress(mByteLength, contentLength()); } } public interface LoadingListener { void onProgress(long currentLength, long contentLength); }}
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9.点赞打Call特效
参考:
第三方控件:
SVGAPlayer-Android
SVGAPlayer 是一个轻量的动画渲染库
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10.自定义渲染层,然后实现自己的 MeasureHepler,来达到实现单个播放器,单独设置的目的。
https://github.com/CarGuo/GSYVideoPlayer/blob/master/app/src/main/java/com/example/gsyvideoplayer/view/CustomRenderView.java 然后实现自己的 MeasureHepler
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11.视频优化项:
a.视频播放前会闪烁一下:
参考:https://github.com/CarGuo/GSYVideoPlayer/issues/2046
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12.视频格式:
m3u8 文件格式详解
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13.异常:使用GSYVideoPlayer个别视频被拉伸显示
现象:在播放的时候发现个别视频明明设置的全屏裁剪GSYVideoType.setShowType(GSYVideoType.SCREEN_TYPE_FULL);
但是视频却被拉伸了。
解决:原来需要设置视频播放器StandardGSYVideoPlayer
的布局控件,也就是video_layout_standard.xml
中的布局文件中的id为 android:id="@+id/surface_container"
的RelativeLayout
改为FrameLayout
,不知道为什么 GSYVideoPlayer为什么不直接就写成FrameLayout
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14.异常:当弹出Toast时候,视频进入changeUiToNormal状态,导致视频变相暂停。
原因:是因为做了更新notifyItemChanged的操作,而不是Toast引起的,也不是播放器因为屏幕焦点被获取而导致暂停。
14.原生播放器播放:
https://blog.csdn.net/lvxiaobo1994/article/details/81060887
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