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• After downloading the file i got 0 byte file size, I dont know how to solve this error ? [closed]

  7 octobre 2024, par Saurabh Chauhan

  This is the handler function which converts a given format to another format but when i provide additional options(like trim audio,bitrate,codec,sample rate etc) to audio and video then it gives me 0 byte file after converting and if i do not include additional options then it gave me correct file.

  


  Please look into this and provide me solution.

  


  const handleConvert = async () => {

  if (!ffmpeg) return;

  setConverting(true);

  for (let uploadedFile of uploadedFiles) {
    const { file } = uploadedFile;
    const fileNameWithoutExtension = getFileNameWithoutExtension(file.name);
    const inputFile = file.name;
    let outputFile;
    let outputFormat;
    const { bitrate, channels, codec, sampleRate, trimStart, trimEnd, volume } = optionsdata;

    try {
      await ffmpeg.writeFile(inputFile, await fetchFile(file));
      let command = ['-i', inputFile];
      // Handle audio conversion with advanced options
> if (supportedAudioFormats.some(ext => file.name.endsWith(ext)) || supportedVideoFormats.some(ext => file.name.endsWith(ext))) {
        outputFile = `${fileNameWithoutExtension}.${audioFormat}`;
        outputFormat = audioFormat;

        // Add trim options if they exist
        if (trimStart && trimEnd) {
          command.push('-ss', trimStart, '-to', trimEnd);
        } else if (trimStart) {
          command.push('-ss', trimStart);
        }

        // Adjust volume if specified
        if (volume && volume !== 'no change') {
          command.push('-filter:a', `volume=${volume}`);
        }
        
        // Apply advanced audio settings like codec, bitrate, and channels
        if (codec) {
          command.push('-c:a', codec);
        }
        if (bitrate) {
          command.push('-b:a', `${bitrate}k`);
        }
> if (channels && channels !== 'no change') {
          command.push('-ac', channels === 'mono' ? '1' : '2');
        }
        if (sampleRate && sampleRate !== 'no change') {
          command.push('-ar', sampleRate);
        }

        // Add output file to the command
        command.push(outputFile);
        console.log('Command Array:', command);
        // Execute FFmpeg command
        await ffmpeg.exec(command);

      } else if (supportedImageFormats.some(ext => file.name.endsWith(ext))) {
        // Image conversion logic
        outputFile = `${fileNameWithoutExtension}.${imageFormat}`;
        outputFormat = imageFormat;
        command.push(outputFile);
        await ffmpeg.exec(command);

      } else if (supportedSubtitleFormats.some(ext => file.name.endsWith(ext))) {
        // Subtitle conversion logic
        outputFile = `${fileNameWithoutExtension}.${subtitleFormat}`;
        outputFormat = subtitleFormat;
        command.push(outputFile);
        await ffmpeg.exec(command);

      } else {
        console.error('Unsupported file type: ', file.name);
        continue; // Skip unsupported files
      }
      // Create Blob and URL for the converted file
      const data = await ffmpeg.readFile(outputFile);
      const convertedBlob = new Blob([data.buffer], {
        type: outputFormat === 'png' ? 'image/png' : `audio/${outputFormat}` || `text/vtt`,
      });
      const convertedUrl = URL.createObjectURL(convertedBlob);

      setConvertedFiles((prevFiles) => [
        ...prevFiles,
        { name: outputFile, url: convertedUrl, format: outputFormat },
      ]);
    } catch (error) {
      console.error('Conversion error:', error);
    }
  }

  setConversionFinished(true);
  setConverting(false);
  setoptionsdata({
    'codec':'',
    'bitrate':'',
    'channels':'',
    'volume':'',
    'sampleRate':'',
    'trimStart':'',
    'trimEnd':''
  });
};



  


• ffmpeg - how to merge multiple audio with time offset into a video

  8 septembre 2021, par Andrews Gilbert

  ffmpeg -y -i earth.mp4 -i 1.wav -i 2.wav -i 3.wav -filter_complex "[1]adelay=delays=5s:all=1[r1]; [2]adelay=delays=8000S:all=1[r2]; [3]adelay=delays=15s:all=1[r3]; [r1][r2][r3]amix=inputs=3[a]"  -map 0:v -map "[a]" -codec:v copy output.mp4


  


  I am using the above code but getting an error in ubuntu 20.04.1

  


  Error is => Error initializing filter 'adelay' with args 'delays=1s:all=1'

  


• lavc/qsv : Use vendor id to create device

  26 juillet 2024, par Fei Wang

  lavc/qsv : Use vendor id to create device
  New kernel driver "xe" will be supported from Lunar Lake instead of
  
  "i915".
  "xe" kernel driver :
  
  https://github.com/torvalds/linux/tree/master/drivers/gpu/drm/xe
  Signed-off-by : Fei Wang <fei.w.wang@intel.com>
  

  • [DH] libavcodec/qsv.c