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• Getting the "Invalid data found when processing input" error when I try to convert a raw pcm file to mp3 ?

  10 août 2023, par Jiron

  I tried to convert a file from pcm into mp3 with ffmpeg and the npm package fluent-ffmpeg. This is my code :

  


  const ffmpeg = require('fluent-ffmpeg');

function convert(input, output, callback) {
    ffmpeg(input)
        .output(output)
        .on('end', function() {                    
            console.log('conversion ended');
            callback(null);
        }).on('error', function(err){
           console.log('error: ' + err);
           callback(err);
        }).run();
   }

   convert('./test.pcm', './converted.mp3', function(err){
   if(!err) {
      console.log('conversion complete');
   }
});


  


  But every time I execute the script, I get this error :

  


  error: Error: ffmpeg exited with code 1: ./test.pcm: Invalid data found when processing input


  


  When I tired running :

  


  ffmpeg -f s16le -ar 48k -ac 2 -i test.pcm converted.mp3


  


  Everything worked though. Is there something wrong with the npm package ? Is there something I missed out or something I did wrong on my code ?

  


  Edit :

  


  My code works when I try to convert an mp3 to a wav file (for example). So it's only struggling with pcm files.

  


• lsws/ppc/yuv2rgb_altivec : Fix build in non-VSX environments

  10 octobre 2020, par Chip Kerchner

  lsws/ppc/yuv2rgb_altivec : Fix build in non-VSX environments
  Add inline function for vec_xl if VSX is not supported. vec_xl intrinsic
  
  is only available on POWER 7 or higher.
  Fixes ticket #8750.
  Signed-off-by : Andriy Gelman <andriy.gelman@gmail.com>
  

  • [DH] libswscale/ppc/yuv2rgb_altivec.c

• Ffmpeg speed processing time

  14 janvier 2021, par fedep11

  I have made this ffmpeg code but it is very slow to process. The backgroundvideo.mp4 is 4k but the final output is 960x540. Is ffmpeg processing the effects in 4k and than scale the video ? Should I write the script in other order or should I downscale the video and than apply the other filters ?

  


  ffmpeg -t 00:00:09 -i "backgroundvideo.mp4" -i "photo.jpg" -i logo.png \
-filter_complex "[0]boxblur=20[video];[1][video]scale2ref=w=oh*mdar:h=ih/1.2[photo][video];\
[video][photo]overlay=(W-w)/2:(H-h)/2:format=auto[bg];\
[bg][2]overlay=0:0,subtitles=subtitle.ass:force_style='WrapStyle=0,format=yuv420p" \
-i "audio.wav" -map 0:v:0 -map 3:a:0 -vcodec h264_nvenc \
-s 960x540 -shortest -r 25 -crf 17 -aspect 16/9 output.mp4


  


  thanks