[英]Use ffmpeg to Convert Video to Gif android studio
I am currently making a simple Androidapp that converts a video from the SD card into a gif. 我目前正在制作一个简单的Androidapp,可将SD卡中的视频转换为gif。
I learnt ffmpeg is the most efficient method to handle the conversion. 我了解到ffmpeg是处理转换的最有效方法。 But I have no idea how to add ffmeg to my android studio project. 但是我不知道如何将ffmeg添加到我的android studio项目中。
In your app's build.gradle add 在您应用的build.gradle中添加
compile 'com.writingminds:FFmpegAndroid:0.3.2'
After that add a button for selecting the path of video and in the onClick method of the button create a intent that will help the user to select video from his phone 之后,添加一个用于选择视频路径的按钮,并在该按钮的onClick方法中创建一个意图,该意图将帮助用户从手机中选择视频
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("video/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Video"), PICK_CONTACT_REQUEST);
Now retreive the above result using the below method 现在使用以下方法检索以上结果
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// Check which request we're responding to
if (requestCode == PICK_CONTACT_REQUEST) {
// Make sure the request was successful
if (resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
// OI FILE Manager
String filemanagerstring = selectedImageUri.getPath();
// MEDIA GALLERY
String selectedImagePath =getPath(selectedImageUri);
if (selectedImagePath != null) {
String[] cmd = {"-i"
, selectedImagePath
, "Image.gif"};
conversion(cmd);
}
}
}
}
define getPath method to get the path of selected video 定义getPath方法以获取所选视频的路径
public String getPath(Uri uri) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(uri, projection, null, null, null);
if (cursor != null) {
// HERE YOU WILL GET A NULLPOINTER IF CURSOR IS NULL
// THIS CAN BE, IF YOU USED OI FILE MANAGER FOR PICKING THE MEDIA
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} else
return null;
}
then Create a method to convert the video into gif 然后创建一种将视频转换为gif的方法
public static void conversion(String[] cmd) {
FFmpeg ffmpeg = FFmpeg.getInstance(this);
try {
// to execute "ffmpeg -version" command you just need to pass "-version"
ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
}
@Override
public void onProgress(String message) {
}
@Override
public void onFailure(String message) {
}
@Override
public void onSuccess(String message) {
}
@Override
public void onFinish() {
}
});
} catch (FFmpegCommandAlreadyRunningException e) {
// Handle if FFmpeg is already running
e.printStackTrace();
}
}
you can refer to https://github.com/WritingMinds/ffmpeg-android-java 您可以参考https://github.com/WritingMinds/ffmpeg-android-java
for JNI, NDK/AS you could start with this 对于JNI,NDK / AS,您可以从这里开始
and then check that users (ph0b) SO posts regarding JNI/NDK 然后检查有关JNI / NDK的用户(ph0b)SO帖子
Then ffmpeg on android is a pretty tall order for which you will need some time. 那么android上的ffmpeg是一个很高的要求,您需要一些时间。
Search 'android-ffmpeg' on github looking for highest community rating ( stars, clones, ) and with good build instructions. 在github上搜索“ android-ffmpeg”,以寻找最高的社区评级(星号,克隆号),并提供良好的构建说明。
IMO - 'guardianproject' and 'halfninja' are good. IMO-'guardianproject'和'halfninja'很好。
You could spend some time outside of android ( just building ffmpeg static libs on a VM ) so you are familiar with just the config/build on ffmpeg. 您可能会在android之外花费一些时间(仅在VM上构建ffmpeg静态库),因此您仅对ffmpeg上的config / build熟悉。
Then, go to full android studio, using ph0b integration technique for running NDK/build inside gradle builds, using the alterations to gradle in his blog post. 然后,进入完整的android studio,使用ph0b集成技术在gradle构建中运行NDK / build,并使用他的博客文章中的更改进行gradle。
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