_id: video_processing
author: Anton Breslavskii | https://github.com/breslavsky
description: Using FFmpeg process videos
readme: Fix ffmpeg fluent
title: en=Video processing;ru=Работа с видео
url: https://huggingface.co/PiperMy/Node-Packages/resolve/main/video_processing.yaml
version: 3
nodes:
  split_video_by_frames:
    _id: split_video_by_frames
    arrange:
      x: 120
      y: 120
    category:
      _id: video_processing
      title: "title: en=Video processing;ru=Обработка видео"
    environment: {}
    inputs:
      video:
        order: 1
        title: en=Video;ru=Видео
        type: video
        required: true
      fps:
        order: 2
        title: en=Frame rate;ru=Частота кадров
        type: integer
        min: 1
        max: 60
        step: 1
        default: 12
    outputs:
      frames:
        title: en=Frames;ru=Кадры
        type: image[]
    package: video_processing
    script: |-
      export async function run({ inputs }) {
          const { video, fps } = inputs;

          const { FatalError, NextNode } = DEFINITIONS;
          const ffmpeg = require('fluent-ffmpeg');
          const path = require('path');
          const fs = require('fs/promises');
          const { fileTypeFromBuffer } = require('file-type');

          const frames = [];

          await useTempFolder(async (tmpFolder) => {

              const { data } = await download(video);
              const { ext } = await fileTypeFromBuffer(data);
              const videoPath = path.join(tmpFolder, `source.${ext}`);
              await fs.writeFile(videoPath, data);

              await new Promise((resolve, reject) => {
                  ffmpeg(videoPath)
                      .outputOptions([
                          `-r ${fps || 12}`,
                          '-q:v 1'
                      ])
                      .output(`${tmpFolder}/%05d.jpg`)
                      .on('start', (cmd) => console.log(cmd))
                      .on('end', () => resolve())
                      .on('error', (err) => reject(new FatalError(err)))
                      .run();
              });

              const files = await fs.readdir(tmpFolder);
              for (const file of files) {
                  if (file.endsWith('jpg')) {
                      frames.push(await fs.readFile(path.join(tmpFolder, file)));
                  }
              }

          });

          return NextNode.from({ outputs: { frames } });
      }
    source: catalog
    title: en=Split video by frames;ru=Разбить видео по кадрам
    version: 1
  join_frames_to_video:
    _id: join_frames_to_video
    arrange:
      x: 480
      y: 120
    category:
      _id: video_processing
      title: "title: en=Video processing;ru=Обработка видео"
    execution: deferred
    inputs:
      frames:
        order: 1
        title: en=Frames;ru=Кадры
        type: image[]
        required: true
      fps:
        order: 2
        title: en=Frame rate;ru=Частота кадров
        type: integer
        min: 1
        max: 60
        step: 1
        default: 12
    outputs:
      video:
        title: en=Video;ru=Видео
        type: video
    package: video_processing
    script: |-
      export async function run({ inputs }) {
          const { frames, fps = 12 } = inputs;

          const { FatalError, NextNode } = DEFINITIONS;
          const ffmpeg = require('fluent-ffmpeg');
          const path = require('path');
          const fs = require('fs/promises');

          let output;

          await useTempFolder(async (tmpFolder) => {

              const buffers = (await Promise.all(frames.map(frame => download(frame)))).map(({ data }) => data);
              for (let i = 0; i < buffers.length; i++) {
                  const fileName = path.join(tmpFolder, `${String(i).padStart(5, '0')}.jpg`);
                  await fs.writeFile(fileName, buffers[i]);
              }

              const outputPath = path.join(tmpFolder, 'output.mp4');

              await new Promise((resolve, reject) => {
                  ffmpeg()
                      .input(path.join(tmpFolder, '%05d.jpg'))
                      .inputFPS(fps)
                      .outputFPS(fps)
                      .outputOptions([
                          '-c:v libx264',
                          '-pix_fmt yuv420p',
                          '-crf 23'
                      ])
                      .output(outputPath)
                      .on('start', cmd => console.log(cmd))
                      .on('end', resolve)
                      .on('error', err => reject(new FatalError(err)))
                      .run();
              });

              output = await fs.readFile(outputPath);
          });

          return NextNode.from({ outputs: { video: output } });
      }
    source: catalog
    title: en=Join frames to video;ru=Собрать кадры в видео
    version: 1