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• FFmpeg giving a wierd "Permission denied" error (Digitalocean VPS Ubuntu 18.04)

  10 mai 2021, par DJ Danny

  I've set up a VPS server on Digitalocean. Installed Ubuntu 18.04, LAMP, etc.
Finally, I installed ffmpeg. It is working fine from terminal but when I try to execute it through php it gives a weird "Permission denied" error :

  


  Here is some information :

  
root@vl :/# whereis ffmpeg
  
ffmpeg : /usr/local/bin/ffmpeg
  
root@vl :/# whereis ffprobe
  
ffprobe : /usr/local/bin/ffprobe
  

  


  root@vl :/# ffmpeg -version
  
ffmpeg version N-102461-g8649f5dca6 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1 18.04)
configuration : —prefix=/usr/local/ffmpeg_build —pkg-config-flags=—static —extra-cflags=-I/usr/local/ffmpeg_build/include —extra-ldflags=-L/usr/local/ffmpeg_build/lib —extra-libs='-lpthread -lm' —ld=g++ —bindir=/usr/local/bin —enable-gpl —enable-gnutls —enable-libaom —enable-libass —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libsvtav1 —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libx265 —enable-nonfree
libavutil 57. 0.100 / 57. 0.100
libavcodec 59. 1.100 / 59. 1.100
libavformat 59. 0.101 / 59. 0.101
libavdevice 59. 0.100 / 59. 0.100
libavfilter 8. 0.101 / 8. 0.101
libswscale 6. 0.100 / 6. 0.100
libswresample 4. 0.100 / 4. 0.100
libpostproc 56. 0.100 / 56. 0.100


  


  My php file :
  

  

echo shell_exec("ffmpeg -i mj.gif -profile:v baseline -pix_fmt yuv420p -vf scale=600 :-2 output.mp4 2>&1")
  
 ?>

  


  The ERROR ! :
  
ffmpeg version N-102461-g8649f5dca6 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1 18.04) configuration : —prefix=/usr/local/ffmpeg_build —pkg-config-flags=—static —extra-cflags=-I/usr/local/ffmpeg_build/include —extra-ldflags=-L/usr/local/ffmpeg_build/lib —extra-libs='-lpthread -lm' —ld=g++ —bindir=/usr/local/bin —enable-gpl —enable-gnutls —enable-libaom —enable-libass —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libsvtav1 —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libx265 —enable-nonfree libavutil 57. 0.100 / 57. 0.100 libavcodec 59. 1.100 / 59. 1.100 libavformat 59. 0.101 / 59. 0.101 libavdevice 59. 0.100 / 59. 0.100 libavfilter 8. 0.101 / 8. 0.101 libswscale 6. 0.100 / 6. 0.100 libswresample 4. 0.100 / 4. 0.100 libpostproc 56. 0.100 / 56. 0.100 Input #0, gif, from 'mj.gif' : Duration : 00:00:01.60, start : 0.000000, bitrate : 22863 kb/s Stream #0:0 : Video : gif, bgra, 1400x1050, 10 fps, 10 tbr, 100 tbn output.mp4 : Permission denied


  
From the past 24 hours I've tried installing ffmpeg in different ways (compiling & apt install), I've also tried changing the permission but still I'm stuck with this error.
  
Any help would be highly appreciated !
  
Thanks

  


• OpusError while using ffmpeg library in discord.py

  18 avril 2021, par The Assignment Nerd

  While playing a local file or youtube audio, I get OpusError: invalid argument error

  


  The play command looks like :

  


  # bot.py
import os
import discord
from discord.ext import commands
from dotenv import load_dotenv
from models import *
from discord.voice_client import VoiceClient
import logging
from config import *
import youtube_dl
from youtube_dl import YoutubeDL

@bot.command()
async def play(ctx):
    user=ctx.author
    voice_channel=user.voice.channel
    channel=None
    # only play music if user is in a voice channel
    if voice_channel:
        # grab user's voice channel
        channel=voice_channel.name
        await ctx.send('User is in channel: '+ channel)
        # create StreamPlayer
        vc = await voice_channel.connect()
        url="https://www.youtube.com/watch?v=AOeY-nDp7hI"
        YDL_OPTIONS = {'format': 'bestaudio', 'noplaylist':'True'}
        FFMPEG_OPTIONS = {'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': '-vn'}
        voice = discord.utils.get(bot.voice_clients, guild=ctx.guild)
        print(0)
        if not voice.is_playing():
            print("1")
            with YoutubeDL(YDL_OPTIONS) as ydl:
                info = ydl.extract_info(url, download=False)
                print(2)
            URL = info['formats'][0]['url']
            print(3)
            voice.play(discord.FFmpegPCMAudio(URL, **FFMPEG_OPTIONS))
            print(4)
            voice.is_playing()
            print("Strated playing")
        else:
            await ctx.send("Already playing song")
            return
    else:
        await ctx.send('User is not in a channel.')


  


  My error :

  


  0
1
[youtube] AOeY-nDp7hI: Downloading webpage
[youtube] Downloading just video AOeY-nDp7hI because of --no-playlist
2
3
Ignoring exception in command play:
Traceback (most recent call last):
  File "/opt/homebrew/lib/python3.9/site-packages/discord/ext/commands/core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "/Users/mohit/programming/discord/area-51-helper/main.py", line 115, in play
    voice.play(discord.FFmpegPCMAudio(URL, **FFMPEG_OPTIONS))
  File "/opt/homebrew/lib/python3.9/site-packages/discord/voice_client.py", line 564, in play
    self.encoder = opus.Encoder()
  File "/opt/homebrew/lib/python3.9/site-packages/discord/opus.py", line 291, in __init__
    self.set_fec(True)
  File "/opt/homebrew/lib/python3.9/site-packages/discord/opus.py", line 326, in set_fec
    _lib.opus_encoder_ctl(self._state, CTL_SET_FEC, 1 if enabled else 0)
  File "/opt/homebrew/lib/python3.9/site-packages/discord/opus.py", line 92, in _err_lt
    raise OpusError(result)
discord.opus.OpusError: invalid argument

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/opt/homebrew/lib/python3.9/site-packages/discord/ext/commands/bot.py", line 939, in invoke
    await ctx.command.invoke(ctx)
  File "/opt/homebrew/lib/python3.9/site-packages/discord/ext/commands/core.py", line 863, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "/opt/homebrew/lib/python3.9/site-packages/discord/ext/commands/core.py", line 94, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: OpusError: invalid argument


  


  I'm using these version

  


  discord.py==1.0.1
ffmpeg==4.3.2
youtube_dl==2021.4.17


  


• RuntimeError : abort(OOM). Build with -s ASSERTIONS=1 for more info

  26 avril 2021, par KhoPhi

  I'm using ffmpeg.wasm 0.9.7 (at the time of this question).
Browser is Brave (Version 1.23.71 Chromium : 90.0.4430.72 (Official Build) (64-bit))

  


  I get this error running an overlay ffmpeg command in the browser, slapping an png over an hevc mp4 4K video of size, almost 40 Megabyte.

  


  RuntimeError: abort(OOM). Build with -s ASSERTIONS=1 for more info.

  


  Here's my code in Angular. Stripped down for brevity

  


  async generatePreviews(event: any) {

    if (!ffmpeg.isLoaded()) {
      await ffmpeg.load();
    }

    for (let index = 0; index < this.files.length; index++) {

      this.video = this.files[index];
      const file_name = this.video.name.split('.')[0] + '-preview.mp4';

      ffmpeg.FS('writeFile', 'tempLogo.png', await fetchFile(this.watermark));
      ffmpeg.FS('writeFile', 'tempVideo.mp4', await fetchFile(this.video));


      // working command in normal terminal
      // ffmpeg -i tempVideo.mp4 -i tempLogo.png -filter_complex "overlay=(W-w)/2:(H-h)/2" temp.mp4

      await ffmpeg.run(
        '-i',
        'tempVideo.mp4',
        '-i',
        'tempLogo.png',
        '-filter_complex',
        'overlay=(W-w)/2:(H-h)/2',
        'temp.mp4'
      );

      const data = ffmpeg.FS('readFile', 'temp.mp4');

      var blob = new Blob([data.buffer], { type: 'video/mp4' });
      saveAs(blob, file_name); // using filesaver.js to save the blob

    }
  }
}



  


  In chrome, I read up to 2Gb of file is possible to convert. Not sure why the OOM issues. Any settings I need to set or changes I need to do ?

  


  Update (4/26/2021)

  


  This thread offered a solution, by building the ffmpeg wasm with a few tweaks. I am able to build, but using the built files even causes the OOM faster than the npm built from the ffmpeg wasm repo.