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• Outputting file details using ffprobe in ffmpeg AWS Lambda layer

  17 février 2021, par Gracie

  I am trying to output the details of an audio file with ffmpeg using the ffprobe option. But it is just returning 'null' at the moment ? I have added the ffmpeg layer in Lambda. can anyone spot why this is not working ?

  



  const { spawnSync } = require("child_process");
const { readFileSync, writeFileSync, unlinkSync } = require("fs");
const util = require('util');
var fs = require('fs');
let path = require("path");

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

    spawnSync(
        "/opt/bin/ffprobe",
        [
            `var/task/myaudio.flac`
        ],
        { stdio: "inherit" }
        );
};


  



  This is the official AWS Lambda layer I am using, it is a great prooject but a little lacking in documentation.

  



  https://github.com/serverlesspub/ffmpeg-aws-lambda-layer

  


• Ffmpeg - avio_open returns AVERROR -13

  10 septembre 2021, par Tolga

  In my project, I am trying to save mp4 video from frames. I am demuxing video first and then decode and save the .mp4 file beside frames. However, this mp4 file is only playable from command line with ffplay. I am trying to play it from media player. After little bit search I found that, I need to remux it to mp4 file after encoding. The examples that I reference for my project are official ffmpeg example and leandromoreira's code. However, avio_open() parts returns -13 as error. I printed out with av_make_error_string(error, sizeof(error), response) and got Permission denied. When I look for that error in the error.h
there is no such an error defined.

  


• is there any functional build of ffmpeg to android

  11 mai 2018, par Rafael Lima

  I’ve searching the last 3 days for a usable API for android access ffmpeg.
  Since FFMpeg group doesn’t release an official lib for android I found several paralel projects trying to build it.

  So it brings me to my nightmare that is called compile.

  i’ve followed all these tutorials : https://trac.ffmpeg.org/wiki/CompilationGuide/Android

  And others found in different places. but none of them build

  NONE OF THEM IS LESS THAN 3 YEARS OLD

  Sorry for the caps, but it is frustrating... no ffmpeg build projects I found deal with nkd above 14 and google doesn’t keep in archive nkds older than that, so even if i agree with get all outdated libraries source i cant reproduce de compiler i cant download the same ndk...

  The only api i manage to download with a functional build of ffmpeg probably was compiled without some codecs, because on my tests i can only handle few types of videos

  ===============================================================

  The question is, does anyone know an actual, stable, project for building ffmpeg to android ?

  I’m even willing to pay in order to get a working version of it