I'm running ffmpeg
command to generate video for given images (img001.jpg, img002.jpg ...) it's creating slide.mp4, but it waits infinitely:
public class Ffmpeg {
public static void main(String[] args) throws IOException, InterruptedException {
String path = "E:\\pics\\Santhosh\\FadeOut\\testing";
String cmd = "ffmpeg -r 1/5 -i img%03d.jpg -c:v libx264 -r 30 -y -pix_fmt yuv420p slide.mp4";
runScript (path, cmd);
}
private static boolean runScript(String path, String cmd) throws IOException, InterruptedException {
List<String> commands = new ArrayList<String>();
commands.add("cmd");
commands.add("/c");
commands.add(cmd);
ProcessBuilder pb = new ProcessBuilder(commands);
pb.directory(new File(path));
pb.redirectErrorStream(true);
Process process = pb.start();
flushInputStreamReader(process);
int exitCode = process.waitFor();
return exitCode == 0;
}
}
private static void flushInputStreamReader (Process process) throws IOException, InterruptedException {
BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line=null;
StringBuilder s = new StringBuilder();
while((line=input.readLine()) != null) {
s.append(line);
}
}
Any suggestions?
After writing the function flushInputStreamReader, its working
Aside from reading the ErrorStream, there's a better way to handle this.
Add
-loglevel quiet
to the command, so that the ErrorStream won't overflow and blocking the process at the first place.