在项目中接到仿照微信小视频录制以及上传本地视频的需求,此时就要考虑到视频的压缩问题,第一时间想到了ffmpeg第三方视频压缩库,秉着不重复造轮子的原则,开始在博客上寻找开源代码。在鸿阳大神的公众号中找到了一篇由马北剑西投稿的文章。
该文章的博客地址:https://blog.csdn.net/mabeijianxi/article/details/63335722
开源代码github地址:https://github.com/mabeijianxi/small-video-record.
在实际运用操作中,发现该代码有一定的缺陷,有些机型无法获取到本地视频地址,于是在此基础上做了修改,供遇到相同问题的童鞋参考。
/**
* 下面是原博客中MainActivity中选择本地视频后处理压缩的代码,在一些机型上无法获取到视频地址
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CHOOSE_CODE) {
//
if (resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
String[] proj = { MediaStore.Images.Media.DATA ,MediaStore.Images.Media.MIME_TYPE};
Cursor cursor = getContentResolver().query(uri, proj, null,
null, null);
if (cursor != null && cursor.moveToFirst()) {
int _data_num = cursor.getColumnIndex(MediaStore.Images.Media.DATA);
int mime_type_num = cursor.getColumnIndex(MediaStore.Images.Media.MIME_TYPE);
String _data = cursor.getString(_data_num);
String mime_type = cursor.getString(mime_type_num);
if (!TextUtils.isEmpty(mime_type) && mime_type.contains("video") && !TextUtils.isEmpty(_data)) {
BaseMediaBitrateConfig compressMode = null;
int compressModeCheckedId = rg_only_compress_mode.getCheckedRadioButtonId();
if (compressModeCheckedId == R.id.rb_cbr) {
String bitrate = et_only_compress_bitrate.getText().toString();
if (checkStrEmpty(bitrate, "请输入压缩额定码率")) {
return;
}
compressMode = new CBRMode(166, Integer.valueOf(bitrate));
} else if (compressModeCheckedId == R.id.rb_auto) {
String crfSize = et_only_compress_crfSize.getText().toString();
if (TextUtils.isEmpty(crfSize)) {
compressMode = new AutoVBRMode();
} else {
compressMode = new AutoVBRMode(Integer.valueOf(crfSize));
}
} else if (compressModeCheckedId == R.id.rb_vbr) {
String maxBitrate = et_only_compress_maxbitrate.getText().toString();
String bitrate = et_only_compress_bitrate.getText().toString();
if (checkStrEmpty(maxBitrate, "请输入压缩最大码率") || checkStrEmpty(bitrate, "请输入压缩额定码率")) {
return;
}
compressMode = new VBRMode(Integer.valueOf(maxBitrate), Integer.valueOf(bitrate));
} else {
compressMode = new AutoVBRMode();
}
if (!spinner_only_compress.getSelectedItem().toString().equals("none")) {
compressMode.setVelocity(spinner_only_compress.getSelectedItem().toString());
}
String sRate = et_only_framerate.getText().toString();
int iRate=0;
if(!TextUtils.isEmpty(sRate)){
iRate=Integer.valueOf(sRate);
}
LocalMediaConfig.Buidler buidler = new LocalMediaConfig.Buidler();
final LocalMediaConfig config = buidler
.setVideoPath(_data)
.captureThumbnailsTime(1)
.doH264Compress(compressMode)
.setFramerate(iRate)
.build();
new Thread(new Runnable() {
@Override
public void run() {
runOnUiThread(new Runnable() {
@Override
public void run() {
showProgress("","压缩中...",-1);
}
});
OnlyCompressOverBean onlyCompressOverBean = new LocalMediaCompress(config).startCompress();
runOnUiThread(new Runnable() {
@Override
public void run() {
hideProgress();
}
});
Intent intent = new Intent(MainActivity.this, SendSmallVideoActivity.class);
intent.putExtra(MediaRecorderActivity.VIDEO_URI, onlyCompressOverBean.getVideoPath());
intent.putExtra(MediaRecorderActivity.VIDEO_SCREENSHOT, onlyCompressOverBean.getPicPath());
startActivity(intent);
}
}).start();
} else {
Toast.makeText(this, "选择的不是视频或者地址错误,也可能是这种方式定制神机取不到!", Toast.LENGTH_SHORT);
}
}
}
}
super.onActivityResult(requestCode, resultCode, data);
}
修改后的代码:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CHOOSE_CODE) {
//
if (resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
String[] proj = { MediaStore.Images.Media.DATA ,MediaStore.Images.Media.MIME_TYPE};
String path = getPath(this, uri); // 修改后获取本地视频地址
BaseMediaBitrateConfig compressMode = null;
int compressModeCheckedId = rg_only_compress_mode.getCheckedRadioButtonId();
if (compressModeCheckedId == R.id.rb_cbr) {
String bitrate = et_only_compress_bitrate.getText().toString();
if (checkStrEmpty(bitrate, "请输入压缩额定码率")) {
return;
}
compressMode = new CBRMode(166, Integer.valueOf(bitrate));
} else if (compressModeCheckedId == R.id.rb_auto) {
String crfSize = et_only_compress_crfSize.getText().toString();
if (TextUtils.isEmpty(crfSize)) {
compressMode = new AutoVBRMode();
} else {
compressMode = new AutoVBRMode(Integer.valueOf(crfSize));
}
} else if (compressModeCheckedId == R.id.rb_vbr) {
String maxBitrate = et_only_compress_maxbitrate.getText().toString();
String bitrate = et_only_compress_bitrate.getText().toString();
if (checkStrEmpty(maxBitrate, "请输入压缩最大码率") || checkStrEmpty(bitrate, "请输入压缩额定码率")) {
return;
}
compressMode = new VBRMode(Integer.valueOf(maxBitrate), Integer.valueOf(bitrate));
} else {
compressMode = new AutoVBRMode();
}
if (!spinner_only_compress.getSelectedItem().toString().equals("none")) {
compressMode.setVelocity(spinner_only_compress.getSelectedItem().toString());
}
String sRate = et_only_framerate.getText().toString();
int iRate=0;
if(!TextUtils.isEmpty(sRate)){
iRate=Integer.valueOf(sRate);
}
LocalMediaConfig.Buidler buidler = new LocalMediaConfig.Buidler();
final LocalMediaConfig config = buidler
.setVideoPath(path)
.captureThumbnailsTime(1)
.doH264Compress(compressMode)
.setFramerate(iRate)
.build();
new Thread(new Runnable() {
@Override
public void run() {
runOnUiThread(new Runnable() {
@Override
public void run() {
showProgress("","压缩中...",-1);
}
});
OnlyCompressOverBean onlyCompressOverBean = new LocalMediaCompress(config).startCompress();
runOnUiThread(new Runnable() {
@Override
public void run() {
hideProgress();
}
});
Intent intent = new Intent(MainActivity.this, SendSmallVideoActivity.class);
intent.putExtra(MediaRecorderActivity.VIDEO_URI, onlyCompressOverBean.getVideoPath());
intent.putExtra(MediaRecorderActivity.VIDEO_SCREENSHOT, onlyCompressOverBean.getPicPath());
startActivity(intent);
}
}).start();
}
}
super.onActivityResult(requestCode, resultCode, data);
}
增加以下几个方法:
@SuppressLint("NewApi")
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
// TODO handle non-primary volumes
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[] {
split[1]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
public static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}