import ffmpeg = require('fluent-ffmpeg');
import { createWriteStream } from 'fs';

const stream = createWriteStream('outputfile.divx');

ffmpeg('/path/to/file.avi')
    .output('outputfile.mp4')
    .output(stream);

ffmpeg('/path/to/file.avi')
    // You may pass a pipe() options object when using a stream
    .output(stream, { end: true });

// Output-related methods apply to the last output added
ffmpeg('/path/to/file.avi')

    .output('outputfile.mp4')
    .audioCodec('libfaac')
    .videoCodec('libx264')
    .size('320x200')

    .output(stream)
    .preset('divx')
    .size('640x480');

// get arguments
ffmpeg('/path/to/file.avi')

    ._getArguments();

// ComplexFilter
ffmpeg('/path/to/file.avi')

    .output('outputfile.mp4')
    .complexFilter([
      { inputs: '0:v', filter: 'scale', options: { w: 1920, h: 1080, interl: 1 }, outputs: [] },
      { inputs: '0:a', filter: 'amerge', options: { inputs: 2 }, outputs: 'am'},
      '[am]aresample=48000:async=1[are]',
      { inputs: 'are', filter: 'channelsplit' , options: { channel_layout: 'stereo'}, outputs: [] }
    ], [])
    .audioCodec('libfaac')
    .videoCodec('libx264')
    .size('320x200');

// Use the run() method to run commands with multiple outputs
ffmpeg('/path/to/file.avi')
    .output('outputfile.mp4')
    .output(stream)
    .on('end', () => {
        console.log('Finished processing');
    })
    .run();

// Create a command to convert source.avi to MP4
const command = ffmpeg('/path/to/source.avi')
    .audioCodec('libfaac')
    .videoCodec('libx264')
    .format('mp4');

// Create a clone to save a small resized version
command.clone()
    .size('320x200')
    .save('/path/to/output-small.mp4');

// Create a clone to save a medium resized version
command.clone()
    .size('640x400')
    .save('/path/to/output-medium.mp4');

// Save a converted version with the original size
command.save('/path/to/output-original-size.mp4');

ffmpeg.ffprobe('/path/to/file.avi', (err, metadata) => {
    console.dir(metadata);
});

ffmpeg.setFfmpegPath('path/to/ffmpeg');
ffmpeg.setFfprobePath('path/to/ffprobe');
ffmpeg.setFfmpegPath('path/to/ffmpeg');

ffmpeg.getAvailableFormats((err, formats) => {
  console.log('Available formats:');
  console.dir(formats);
});

ffmpeg.getAvailableCodecs((err, codecs) => {
  console.log('Available codecs:');
  console.dir(codecs);
});

ffmpeg.getAvailableEncoders((err, encoders) => {
  console.log('Available encoders:');
  console.dir(encoders);
});

ffmpeg.getAvailableFilters((err, filters) => {
  console.log("Available filters:");
  console.dir(filters);
});

ffmpeg.ffprobe('/path/to/file.mp4', (err, data) => {
    console.log(data.format.filename);
    console.log(data.streams[0].bit_rate);
});