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• HTML5 / and live transcoding with FFMPEG

  8 mai 2014, par TooTallNate

  So from my web server, I would like to use FFMPEG to transcode a media file for use with an HTML <audio></audio> or <video></video> tag. Easy enough right ?

  The conversion would need to take place in real-time, when an HTTP client requested the converted file. Ideally the file would be streamed back to the HTTP client as it is being transcoded (and not afterwards at the end, since that would potentially take a while before any data starts being sent back).

  This would be fine, except that in today’s browsers, an HTML5 audio or video tag requests the media file in multiple HTTP requests with the Range header. See this question for details.

  In that question linked above, you can see that Safari requests weird chunks of the file, including the ending few bytes. This poses a problem in that the web server WOULD have to wait for the conversion to finish, in order to deliver the final bytes of the file to conform to the Range request.

  So my question is, is my train of thought right ? Is there a better way to deliver transcoding content to an <audio></audio> or <video></video> tag that wouldn’t involve waiting for the entire conversion to finish ? Thanks in advance !

• AWS Lambda Error : Cant find ffmpeg

  31 août 2016, par rpm

  I am building a lambda function that requires ffmpeg. The error that I am getting is :

  ERROR :: Error: Cannot find ffmpeg

  Relevant code to the problem is below...

  process.env['PATH'] = process.env['PATH'] + "/" + process.env['LAMBDA_TASK_ROOT']
  
  process.env['PATH'] = process.env['PATH'] + ':/tmp/'
  
  
  
  var ffmpeg = require('fluent-ffmpeg')
  
  
  
  exports.handler = (event, context, callback) => {
  
  
  
     var proc = new ffmpeg();
  
  
  
     proc.addInput('testfile.mp4)
  
     .on('start', function(ffmpegCommand) {
  
      })
  
     .on('progress', function(data) {
  
     })
  
     .on('end', function() {
  
     })
  
     .on('error', function(error) {
  
       /// ERROR IS HERE
  
     })
  
     .outputOptions(['-hls_time 10'])
  
     .output(fileName + '.m3u8')
  
     .run();
  
  
  
  }

  Here’s my ZIP structure :

  ./ffmpeg
  
  ./ffprobe
  
  ./index.js
  
  ./node_modules
  
  ./node_modules/aws-sdk
  
  ./node_modules/ffmpeg
  
  ./node_modules/fluent-ffmpeg
  
  ./package.json

  I’ve read around and have seen people mention chmod-ing ffmpeg and ffprobe, and I tried that using chmod 755 on both executables, and that didn’t work.

  Also read about having to change the path. I tried what I could, and was unsuccessful again. I am not sure where to turn from here, or how to further diagnose what I am doing wrong. Any help would be greatly appreciated. Thanks !

• AWS Lambda Error : Cant find ffmpeg

  21 octobre 2022, par raisedandglazed

  I am building a lambda function that requires ffmpeg. The error that I am getting is :

  



  ERROR :: Error: Cannot find ffmpeg


  



  Relevant code to the problem is below...

  



  process.env['PATH'] = process.env['PATH'] + "/" + process.env['LAMBDA_TASK_ROOT']
process.env['PATH'] = process.env['PATH'] + ':/tmp/'

var ffmpeg = require('fluent-ffmpeg')

exports.handler = (event, context, callback) => {

   var proc = new ffmpeg();

   proc.addInput('testfile.mp4)
   .on('start', function(ffmpegCommand) {
    })
   .on('progress', function(data) {
   })
   .on('end', function() {
   })
   .on('error', function(error) {
     /// ERROR IS HERE
   })
   .outputOptions(['-hls_time 10'])
   .output(fileName + '.m3u8')
   .run();

}


  



  Here's my ZIP structure :

  



  ./ffmpeg
./ffprobe
./index.js
./node_modules
./node_modules/aws-sdk
./node_modules/ffmpeg
./node_modules/fluent-ffmpeg
./package.json


  



  I've read around and have seen people mention chmod-ing ffmpeg and ffprobe, and I tried that using chmod 755 on both executables, and that didn't work.

  



  Also read about having to change the path. I tried what I could, and was unsuccessful again. I am not sure where to turn from here, or how to further diagnose what I am doing wrong. Any help would be greatly appreciated. Thanks !