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• How can I get the location of my screenshot made from video with ffmpeg in Node.js ?

  17 juin 2023, par Terry Windwalker

  This is how I did it.

  


  const ffmpegPath = require('@ffmpeg-installer/ffmpeg');
import ffmpeg from 'fluent-ffmpeg';
import path from 'path';
const os = require('os');
ffmpeg.setFfmpegPath(ffmpegPath.path);


export const generateThumbnailFromVideo = async (mp4Buffer) => {
    console.log('generateThumbnailFromVideo is triggered');
    const timePosition = '00:00:00.500';
    const filename = `temp/temp-${new Date().getTime()}.png`;
    return new Promise((resolve, reject) => {
        ffmpeg({
            source: bufferToStream(mp4Buffer)
        })
        .on('error', (err) => {
            console.error('An error occurred: ' + err.message);
            reject(err);
        })
        .on('end', () => {
            console.log('Thumbnail generated successfully');
            fs.readFile(filename, (err, data) => {
                if (err) {
                    console.error('An error occurred while reading the thumbnail file:', err);
                    reject(err);
                    return;
                }
                fs.unlink(filename);
                uploadBuffer(data, filename, data.length)
            })
            resolve(filename);
        })
        .screenshots({
            timestamps: [timePosition],
            filename: filename,
            folder: 'temp/',
            size: '320x240',
        });
    });
}


  


  And this is the log came up.

  


  generateThumbnailFromVideo is triggered
Thumbnail generated successfully
createProjectMedia is triggered
userId:  1
projectId:  25
mediaArray:  [
  {
    mediaUrl: 'medias/1/1686843801535/medias_1_1684753043519_1_(1)_(4)_(1).mp4',
    thumbnailUrl: 'medias/1/1686843801535/medias_1_1684753043519_1_(1)_(4)_(1)_thumbnail.jpg',
    mediaType: 2
  }
]
An error occurred while reading the thumbnail file: [Error: ENOENT: no such file or directory, open 'temp/temp-1686843802255.png'] {
  errno: -2,
  code: 'ENOENT',
  syscall: 'open',
  path: 'temp/temp-1686843802255.png'
}


  


  It claims the screenshot has been created but I cannot find it anywhere. Tried absolute route with __dirname and os.tmpdir() with no luck. The screenshot it claimed has been created are not there.

  


  Can somebody help me out ? I have been stuck here for 5 hours with no progress so far.

  


  Also, I have checked the file temp in the root directory of the repo. It is empty.

  


  UPDATE : Checked and can confirm that the router used in the key "folder" (temp/) is correct, since deleting that folder will trigger an error saying that the folder is not found. Creating the folder again will remove this error. But even though the "generated successfully" log is printed, the image is not saved in that folder, and the folder is still empty after that log is printed.

  


  That fs.unlink is also unrelated. Removing it won't cause any change.

  


• Error : bad memory at /opt/render/project/src/node_modules/@ffmpeg.wasm/core-mt/dist/core.js:15:1

  1er octobre 2023, par James

  While deploying nodejs app on render.com i get this error Error : bad memory at /opt/render/project/src/node_modules/@ffmpeg.wasm/core-mt/dist/core.js:15:1.

  


  how to avoid this error i am using ffmpeg for merging audio with video.

  


  full error

  


   /opt/render/project/src/node_modules/@ffmpeg.wasm/core-mt/dist/core.js:15&#xA;Oct 1 04:53:37 PM  Error("bad memory");var Aa=z.buffer;e.HEAP8=A=new Int8Array(Aa);e.HEAP16=C=new Int16Array(Aa);e.HEAP32=E=new Int32Array(Aa);e.HEAPU8=B=new Uint8Array(Aa);e.HEAPU16=wa=new Uint16Array(Aa);e.HEAPU32=F=new Uint32Array(Aa);e.HEAPF32=xa=new Float32Array(Aa);e.HEAPF64=ya=new Float64Array(Aa);za=z.buffer.byteLength;var H,Ba=[],Ca=[],Da=[],Ea=[],Fa=[],Ga=!1,Ha=0;function Ia(){return noExitRuntime||0opt/render/project/src/node_modules/@ffmpeg.wasm/core-mt/dist/core.js:15:1&#xA;Oct 1 04:53:37 PM      at Function.<anonymous> (/opt/render/project/src/node_modules/@ffmpeg.wasm/main/dist/index.js:165:64)&#xA;Oct 1 04:53:37 PM      at Generator.next (<anonymous>)&#xA;Oct 1 04:53:37 PM      at fulfilled (/opt/render/project/src/node_modules/@ffmpeg.wasm/main/dist/index.js:28:22)&#xA;</anonymous></anonymous>

  


  my code

  


  import express from "express";
const router = express.Router();
import { readFile, writeFile } from "fs/promises";
import { FFmpeg } from "@ffmpeg.wasm/main";
import path from "path";

const currentDirectory = process.cwd();

const inputFilePath = path.join(currentDirectory, "video3.mp4");
const inputFilePath1 = path.join(currentDirectory, "wolf-howl-6310.mp3");
const outputFilePath = path.join(currentDirectory, "video3-2.mp4");

const ffmpeg = await FFmpeg.create({ core: "@ffmpeg.wasm/core-mt", log: true });

try {
  ffmpeg.fs.writeFile("/video3.mp4", await readFile(inputFilePath));
  ffmpeg.fs.writeFile("/wolf-howl-6310.mp3", await readFile(inputFilePath1));
  console.log(ffmpeg.version);
  await ffmpeg.run(
    "-i",
    "/wolf-howl-6310.mp3",
    "-i",
    "/video3.mp4",
    "-c",
    "copy",
    "-map",
    "0:a:0",
    "-map",
    "1:v:0",
    "/video3-2.mp4"
  );
  await writeFile(outputFilePath, ffmpeg.fs.readFile("/video3-2.mp4"));
  console.log("Conversion successful!");
} catch (error) {
  console.error("Error:", error);
}

router.post("/", (req, res) => {});
export { router as Merge };


  


• jpg images to gif ffmpeg no data found in image

  3 juillet 2023, par Idk123

  I was trying to use ffmpeg to create a gif from jpg images, but I wasn't able to convert them, not through a python code and not even from the dir itself in cmd

  


  running cmd in the folder :

  


  python code :

  


  input_files = f"{BASE_DIR}\\qr_images\\qr%d.jpg"
command = f'ffmpeg -i {input_files} output.gif'
os.system(f'start /wait cmd /k {command}')


  


  the dir

  


  I need the files in the dir to be able to convert to gif using ffmpeg (I have it installed correctly)

  


  this is the complete cmd dialog (if I run it from the dir in cmd or if i run the python code :

  


  ffmpeg version 6.0-essentials_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers built with gcc 12.2.0 (Rev10, Built by MSYS2 project) configuration : —enable-gpl —enable-version3
—enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-zlib —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-sdl2 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libaom —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-libfreetype —enable-libfribidi —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libvpl —enable-libgme —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libtheora —enable-libvo-amrwbenc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-librubberband libavutil 58. 2.100 / 58. 2.100 libavcodec 60. 3.100 / 60. 3.100 libavformat 60. 3.100 /
60. 3.100 libavdevice 60. 1.100 / 60. 1.100 libavfilter 9. 3.100 / 9. 3.100 libswscale 7. 1.100 / 7. 1.100 libswresample 4. 10.100 / 4. 10.100 libpostproc 57. 1.100 /
57. 1.100 [mjpeg @ 000002000696bfc0] No JPEG data found in image [mjpeg @ 000002000696bfc0] unable to decode APP fields : Invalid data found when processing input
Last message repeated 1 times [mjpeg @ 000002000696bfc0] No JPEG data found in image [mjpeg @ 000002000696bfc0] unable to decode APP fields : Invalid data found when processing input
Last message repeated 1 times [mjpeg @ 000002000696bfc0] Found EOI before any SOF, ignoring [mjpeg @ 000002000696bfc0] No JPEG data found in image [mjpeg @ 000002000696bfc0] bits 159 is invalid [mjpeg @ 000002000696bfc0] unable to decode APP fields : Invalid data found when processing input
Last message repeated 2 times [mjpeg @ 000002000696bfc0] bits 247 is invalid [mjpeg @ 000002000696bfc0] unable to decode APP fields : Invalid data found when processing input [mjpeg @ 000002000696bfc0] No JPEG data found in image [mjpeg @ 000002000696bfc0] unable to decode APP fields : Invalid data found when processing input [mjpeg @ 000002000696bfc0] No JPEG data found in image [image2 @ 000002000696aec0] Could not find codec parameters for stream 0 (Video : mjpeg (Progressive), none(bt470bg/unknown/unknown)) : unspecified size Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options Input #0, image2, from 'c :\Test_proj\qr_images\qr%d.jpg' : Duration : 00:00:00.28, start :
0.000000, bitrate : N/A Stream #0:0 : Video : mjpeg (Progressive), none(bt470bg/unknown/unknown), 25 fps, 25 tbr, 25 tbn Stream mapping : Stream #0:0 -> #0:0 (mjpeg (native) -> gif (native)) Press [q] to stop, [?] for help [mjpeg @ 00000200069a35c0] mjpeg : unsupported coding type (c5) [mjpeg @ 00000200069a35c0] mjpeg : unsupported coding type (ca) Error while decoding stream #0:0 : Invalid data found when processing input [mjpeg @ 00000200069a35c0] unable to decode APP fields : Invalid data found when processing input
Last message repeated 1 times [mjpeg @ 00000200069a35c0] mjpeg : unsupported coding type (ce) [mjpeg @ 00000200069a35c0] No JPEG data found in image Error while decoding stream #0:0 : Invalid data found when processing input [mjpeg @ 00000200069a35c0] unable to decode APP fields : Invalid data found when processing input
Last message repeated 1 times [mjpeg @ 00000200069a35c0] mjpeg : unsupported coding type (cb) [mjpeg @ 00000200069a35c0] Found EOI before any SOF, ignoring [mjpeg @ 00000200069a35c0] Can not process SOS before SOF, skipping [mjpeg @ 00000200069a35c0] No JPEG data found in image Error while decoding stream #0:0 : Invalid data found when processing input [mjpeg @ 00000200069a35c0] bits 159 is invalid Error while decoding stream #0:0 : Invalid data found when processing input [mjpeg @ 00000200069a35c0] unable to decode APP fields : Invalid data found when processing input
Last message repeated 2 times [mjpeg @ 00000200069a35c0] bits 247 is invalid Error while decoding stream #0:0 : Invalid data found when processing input [mjpeg @ 00000200069a35c0] unable to decode APP fields : Invalid data found when processing input [mjpeg @ 00000200069a35c0] mjpeg : unsupported coding type (c6) [mjpeg @ 00000200069a35c0] No JPEG data found in image Error while decoding stream #0:0 : Invalid data found when processing input [mjpeg @ 00000200069a35c0] Can not process SOS before SOF, skipping [mjpeg @ 00000200069a35c0] unable to decode APP fields : Invalid data found when processing input [mjpeg @ 00000200069a35c0] Can not process SOS before SOF, skipping
Last message repeated 2 times [mjpeg @ 00000200069a35c0] No JPEG data found in image Error while decoding stream #0:0 : Invalid data found when processing input Cannot determine format of input stream 0:0 after EOF Error marking filters as finished Conversion failed !