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• Inotifywait giving wrong file path after running ffmpeg

  23 mars 2019, par Morpheus

  So im running a little inotifywait script to monitor a folder for new files and transcode them if they are mxf and contain a video stream. But for some weird reason if the script does call ffmpeg the next fileevent by inotify is giving me a wrong path seemingly random cutting the filepath at any position.

  So far i tried moving the call to an external script, resetting the file variable which shouldnt matter anyway and adding a sleep to the script. I also tried using normal filepaths without whitespaces or - which shouldnt matter but that also didnt help.

  inotifywait -m -r -e close_write -e moved_to --format "%w%f"  "$dir" | while read f 
  
  
  
  do
  
              if ffprobe "$file" 2>&1 | egrep 'Stream #0:0: Video' && ffprobe "$file" 2>&1 | egrep 'MXF' ; then
  
                  mkdir -vp "$movepath" && mkdir -vp "$trans$path3"  && mkdir -vp "$trans2$path3" && mv -fu "$f" "$trans2$path" && \
  
                  ffmpeg -y -i "$file" -map_metadata 0 -c:v h264_nvenc -b:v 2m -bufsize 2m -profile:v baseline -level:v 3.0 -pix_fmt yuv420p -vf yadif,scale="iw/4:ih/4" -an "$transpath" 2>> copy_ffmpeg_log.txt
  
  done

  expected :

  /media/raid/TMO_Media/INGEST-HP.1/WacinS1_19V01.5C935C93A3B4V.mxf

  example for an result after transcode :

  cinS1_19A06.5C935C93A088A.mxf

  do while normal mv commands work and inotify does work as expected when stopped for transcoding a file the next path given by inotify is getting messed up

  link to the entire script : https://pastebin.com/aRNG4rqz

• No such file or directory error in flutter_ffmpeg

  8 septembre 2021, par Aryan Shandilya

  I intend to use the flutter_ffmpeg package to convert audio to video with the image as a background, but I am encountering a very weird error. Despite the fact that the files exist in the location that I have provided to the flutter_ffmpeg package as input, I am getting a 'No such file or directory' error. I have already tested out everything I can thnk of but I just don't get it.

  


  Future<string> converter(String audioPath, String imagePath) async {&#xA;String? videoPath;&#xA;Directory? dir = await getExternalStorageDirectory();&#xA;// videoPath = dir!.path;&#xA;final videoDirectory = &#x27;${dir!.path}/VDir&#x27;;&#xA;if (await Directory(videoDirectory).exists() == false) {&#xA;  await Directory(videoDirectory).create();&#xA;}&#xA;// await Directory(videoDirectory).create();&#xA;videoPath = videoDirectory &#x2B; &#x27;/${DateTime.now().millisecond}.mp4&#x27;;&#xA;print(&#xA;    "-------------------------------------------------------------------------------------------------------------------------------------------------------------------");&#xA;print("\nAudioPath = " &#x2B; audioPath);&#xA;print("\nImagePath = " &#x2B; imagePath);&#xA;print("\nVideoPath = " &#x2B; videoPath);&#xA;print("\nVideoDirectory = " &#x2B; videoDirectory);&#xA;print(&#xA;    "\n-------------------------------------------------------------------------------------------------------------------------------------------------------------------");&#xA;_flutterFFmpeg&#xA;    .execute(&#xA;        &#x27;-loop 1 -framerate 2 -i \&#x27;$imagePath\&#x27; -i \&#x27;$audioPath\&#x27; -vf "scale=2*trunc(iw/2):2*trunc(ih/2),setsar=1" -c:v libx264 -preset medium -tune stillimage -crf 18 -c:a copy -shortest -pix_fmt yuv420p $videoPath&#x27;)&#xA;    .catchError((onError) {&#xA;  print(onError);&#xA;  // ErrorHandler().errorDialog(context, )&#xA;});&#xA;return videoPath;}&#xA;</string>

  


  videoPath = await FFmpegOperations().converter(widget.audioPath, coverImagePath);

  


  Can someone tell me what is wrong with my code, I am using the min-gpl version(not lts) ffmpeg and am testing this on two android devices I am getting the same results.

  


  Error :
/data/user/0/com.example.example/app_flutter/datte.png : No such file or directory
D/flutter-ffmpeg( 1139) : FFmpeg exited with rc : 1
.
Any form of help would be more than welcome, thank you.

  


• Streaming a programatically created video to youtube using node and ffmpeg

  23 septembre 2020, par Caltrop

  I've been trying to Livestream a programmatically created image to youtube using node. I've had very limited success using FFmpeg. While I have managed to create and save an image thanks to this insightful thread, I have yet to make the code work for streaming to an RTMP server.

  


  const cp = require('child_process'),
    destination = 'rtmp://a.rtmp.youtube.com/live2/[redacted]', //stream token redacted
    proc = cp.spawn('./ffmpeg/bin/ffmpeg.exe', [
        '-f', 'rawvideo',
        '-pix_fmt', 'rgb24',
        '-s', '426x240',
        '-i', '-', //allow us to insert a buffer through stdin
        '-f', 'flv',
        destination
    ]);

proc.stderr.pipe(process.stdout);

(function loop() {
    setTimeout(loop, 1000 / 30); //run loop at 30 fps
    const data = Array.from({length: 426 * 240 * 4}, () => ~~(Math.random() * 0xff)); //create array with random data
    proc.stdin.write(Buffer.from(data)); //convert array to buffer and send it to ffmpeg
})();


  


  When running this code no errors appear and everything appears to be working, however, YouTube reports that no data is being received. Does anybody know what is going wrong here ?

  


  Update : This is really counter-intuitive but adding a slash to the destination like this 'rtmp://a.rtmp.youtube.com/live2/[redacted]/' causes ffmpeg to throw a generic I/O error. This is really weird to me. Apologies if the answer to this is obvious, I'm really inexperienced with ffmpeg.