合并后流利的ffmpeg框架消失

Question

I have a problem with the function mergeToFile() of the library fluent-ffmpeg . If you use the mergeToFile function several times, then in the merged video, the frames are lost. Sometimes the video is cut off for a few seconds.

fluent_ffmpeg()
  .addInput('video1.webm')
  .addInput('video2.webm')
  .on('end', function() {
    console.log('Success!');
  })
  .on('error', function(err) {
    console.error('Error: ' + err.message);
  })
  .mergeToFile('result.webm');

I've tried other additional options, but they didn't help.

Answer 1

I've found a decision, maybe it will be useful. The function mergeToFile() works correctly only for the first time. However, if you write the result of merge in the file and delete the file specified in arguments of function .mergeToFile(), it will work.

 fluent_ffmpeg() .addInput('video1.webm') .addInput('video2.webm') .on('end', function() { var writeStream = fs.createWriteStream('video1.webm', {encoding: 'binary'}); writeStream.on('close', function() { fs.unlinkSync('result.webm'); }); fs.createReadStream('result.webm').pipe(writeStream); }) .mergeToFile('result.webm');