List Durations of Video Files, requires java >=11 and ffprobe

list-durations

#!/usr/bin/env java --source=11
import java.util.List;
import java.io.IOException;
import java.io.InputStreamReader;
import java.time.Duration;
import java.io.BufferedReader;
import java.util.ArrayList;
import java.util.Collection;

class ListDurations {
    public static Collection<FileInfo> listDurations(String[] filePaths) {
        var res = new ArrayList<FileInfo>();
        for (var f : filePaths) {
            ProcessBuilder pBuilder = new ProcessBuilder(List.of("ffprobe", "-v", "error", "-show_entries",
                    "format=duration", "-of", "default=noprint_wrappers=1:nokey=1", f));
            String durationFmt = "";
            try {
                Process process = pBuilder.start();
                var bis = new BufferedReader(new InputStreamReader(process.getInputStream()));
                String cmdOut = bis.readLine();
                int exitCode = process.waitFor();
                if (exitCode == 0) {
                    long secs = (long) Double.parseDouble(cmdOut);
                    durationFmt = String.format("%d:%02d:%02d", secs / 3600, (secs % 3600) / 60, (secs % 60));
                }
            } catch (InterruptedException | IOException e) {
                e.printStackTrace();
            }
            var info = new FileInfo(f, durationFmt);
            res.add(info);
        }

        return res;
    }

    public static void main(String[] args) {
        for (var entry : listDurations(args)) {
            System.out.format("%s %s\n", entry.name, entry.duration);
        }
    }
}

class FileInfo {
    public final String name;
    public final String duration;

    public FileInfo(String name, String duration) {
        this.name = name;
        this.duration = duration;
    }

    public String toString() {
        return String.format("<%s, %s>", this.name, this.duration);
    }
}