我正在使用 ffmpeg-android连接两个视频文件，但连接时间太长，我猜是因为使用 "-filter_complex" 但这是我在互联网上找到的唯一命令，请有人简化以下命令吗？我只想连接由 camera2 api 捕获的两个视频文件，无需任何修改。
String command[] = new String[]{
"-y",
"-i", firstPath,
"-i", secondPath,
"-strict",
"experimental",
"-filter_complex",
"[0:v]scale=iw*min(1920/iw\\,1080/ih):ih*min(1920/iw\\,1080/ih)," +
"pad=1920:1080:(1920-iw*min(1920/iw\\,1080/ih))/2:(1080-ih*min(1920/iw\\,1080/ih))/2,setsar=1:1[v0];[1:v] scale=iw*min(1920/iw\\,1080/ih):ih*min(1920/iw\\,1080/ih)," +
"pad=1920:1080:(1920-iw*min(1920/iw\\,1080/ih))/2:(1080-ih*min(1920/iw\\,1080/ih))/2,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1",
"-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "1920x1080", "-vcodec", "libx264", "-crf", "27", "-q", "4", "-preset", "ultrafast", getVideoFilePath(getActivity())};
commandFFMPEG(command);
private void commandFFMPEG(String command[]) {
FFmpeg ffmpeg = FFmpeg.getInstance(getActivity());
try {
ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
startTime = System.currentTimeMillis();
}
@Override
public void onProgress(String message) {
}
@Override
public void onFailure(String message) {
}
@Override
public void onSuccess(String message) {
long endTime = System.currentTimeMillis();
long result = endTime - startTime;
Toast.makeText(getActivity(), "Videos are merged", Toast.LENGTH_SHORT).show();
}
@Override
public void onFinish() {
}
});
} catch (FFmpegCommandAlreadyRunningException e) {
// Handle if FFmpeg is already running
}
}
最佳答案
Idk 它会帮助你，但是当我想用 ffmpeg 连接视频时，我使用了这个命令:
StringBuilder builder = new StringBuilder();
builder.append("-f ");
builder.append("concat ");
builder.append("-safe 0 ");
builder.append("-i ");
final String tempFile = getTextFile().getAbsolutePath();//it is text file with video files paths
builder.append(tempFile);
builder.append(" ");
builder.append("-c ");
builder.append("copy ");
builder.append(saveFile);// saveFile - it is your output file
无论如何，总时长为 20 秒的串联视频需要约 20 秒的处理时间。你可以看看here ，我写它是为了连接几个视频，但代码质量很糟糕，我不知道，你会不会明白那里的东西。 希望对你有帮助)
关于android - 使用 ffmpeg-android 连接视频文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51556944/