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• error on Heroku application log after deployment

  30 juin 2021, par SDB PROGRAM LEARNER

  I had made a discord bot and deploy it to Heroku in this bot I can play youtube songs normally but after deploying on Heroku it gives me errors on application logs when I am trying to play my song

  


  My code :-

  


  import discord,requests, sys, webbrowser, bs4
import youtube_dl
import os
from dotenv import load_dotenv
import ffmpeg
from discord.ext import *
from discord.ext import commands
from discord.ext.commands import Bot
from discord.voice_client import VoiceClient
import asyncio
@client.command(pass_context=True)                      #====================================Join
async def join(ctx):
    channel = ctx.author.voice.channel
    await channel.connect()
@client.command()                                         #==================================Play
async def play(ctx, url:str):
    song_there = os.path.isfile("song.mp3")
    try:
        if song_there:
            os.remove("song.mp3")
            player.clear()
    except PermissionError:
        await ctx.send("Wait for the current playing music end or use the 'stop' command...")
        return
    await ctx.send("Getting everything ready, playing audio soon, depends on your internet speed...")
    print("Someone wants to play music let me get that ready for them...")
    voice = discord.utils.get(client.voice_clients, guild=ctx.guild)
    ydl_opts = {
        'format': 'bestaudio/best',
            'postprocessors': [{
            'key': 'FFmpegExtractAudio',
            'preferredcodec': 'mp3',
            'preferredquality': '192',
        }],
    }
    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        ydl.download([url])
    for file in os.listdir("./"):
        if file.endswith(".mp3"):
            os.rename(file, 'song.mp3')
    voice.play(discord.FFmpegPCMAudio("song.mp3"))
    
    voice.volume = 100


  


  It works properly on localhost from vscode

  


  but when I trying to use this after deployment on Heroku it gives me the error below

  


  2021-06-30T07:41:09.476383+00:00 app[worker.1]: The above exception was the direct cause of the following exception:
2021-06-30T07:41:09.476384+00:00 app[worker.1]: 
2021-06-30T07:41:09.476384+00:00 app[worker.1]: Traceback (most recent call last):
2021-06-30T07:41:09.476422+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.9/site-packages/discord/ext/commands/bot.py", line 939, in invoke
2021-06-30T07:41:09.476423+00:00 app[worker.1]:     await ctx.command.invoke(ctx)
2021-06-30T07:41:09.476427+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.9/site-packages/discord/ext/commands/core.py", line 863, in invoke
2021-06-30T07:41:09.476427+00:00 app[worker.1]:     await injected(*ctx.args, **ctx.kwargs)
2021-06-30T07:41:09.476451+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.9/site-packages/discord/ext/commands/core.py", line 94, in wrapped
2021-06-30T07:41:09.476452+00:00 app[worker.1]:     raise CommandInvokeError(exc) from exc
2021-06-30T07:41:09.476487+00:00 app[worker.1]: discord.ext.commands.errors.CommandInvokeError: Command raised an exception: DownloadError: ERROR: ffprobe/avprobe and ffmpeg/avconv not found. Please install one.


  


  Please help me to solve this problem

  


• FFMPEG : alphaextract+split create transparent video in 1080 x 1920 pixels not working

  30 juin 2021, par Karim Elhalloumi

  Create your transparent video :
i found a solution to a problem of creating alpha from a video then put it next to original as an output it give one video with original+alpha
using this ffmpeg cmd :

  


  ffmpeg -i video_name.video_extension -vf "split [a], pad=iw*2:ih [b], [a] alphaextract, [b] overlay=w" -y final_name_alpha.mp4


  


  source :https://docs.minsar.app/create/howtos/transparentvideos/
the problem is This operation with Ffmpeg will not work if your video is not in 16:9 format, or has no alpha background.

  


  Result :
CMD Result 
iwant put as input a template for phone size with black background and generate the 2 video in one

  


  what Iam trying to get is video.mp4 :
Process here

  


  I'm new to ffmpeg, is there any cmd to generate alpha next to original without having only black back ground and with 9:16 instead ?

  


  
ffmpeg version 4.4-essentials_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.83.100
  Duration: 00:00:14.02, start: 0.000000, bitrate: 797 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 540x960, 662 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[Parsed_alphaextract_2 @ 000001a9dae4bdc0] Requested planes not available.
[Parsed_alphaextract_2 @ 000001a9dae4bdc0] Failed to configure input pad on Parsed_alphaextract_2
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
[aac @ 000001a9dadd4280] Qavg: 6441.061
[aac @ 000001a9dadd4280] 2 frames left in the queue on closing
Conversion failed!


  


  cmd I'm using to merge video :

  


  - filter_complexe "[2]split=2[color][alpha];[color]crop=iw/2:ih:0:0[color];[alpha]crop=iw/2:ih:iw/2:0[alpha];[color][alpha]alphamerge[ovrly];[0]scale=460:505,setsar=1[0_scaled];[1]scale=460:505,setsar=1[1_scaled];[3][0_scaled]overlay=x=80:y=175[base_img_1];[3][1_scaled]overlay=x=80:y=175[base_img_2];[base_img_1]zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0006))':d=25*14:s=540x960,fade=out:st=6:d=1:alpha=1,fade=t=in:st=0:d=1[video1];[base_img_2]zoompan=z='if(lte(on,25*6),1,if(lte(zoom,-1.0),1.2,min(zoom+0.0006,1.2)))':d=25*14:s=540x960[video2];[video2][video1]overlay[overlay_video1];[overlay_video1][ovrly]overlay=0:0[base_video];[base_video][4]overlay=enable='between(t,0,7)':x=30:y=30[watermarked_part1];[watermarked_part1][4]overlay=enable='between(t,7,14)':x=(main_w-overlay_w-30):y=(main_h-overlay_h-10)[final_video]"


  


• Dcode time-metadata from .mov files by ffmepg or C++ libraries

  8 juillet 2021, par shortz79

  I record a .mov files from swift, by using "AVTimedMetadataGroup" to save metadata per frame (rawdata) into the track.

  


  Here is the example how I save according swift

  


          var newItem = AVMutableMetadataItem()
        newItem.identifier = AVMetadataIdentifier.quickTimeUserDataTrack
        newItem.dataType = kCMMetadataBaseDataType_RawData as String
        var newGroup = AVTimedMetadataGroup(items: [newItem], timeRange: timeRange)
        m_depth_writer_input_adap!.append(newGroup)


  


  I also copy the track data into a .bin files, but it's there any way to get the track data from linux or windows side instead from swift.

  


  Below is the log according to the ffmpeg.

  


  ffmpeg -i .\input_file.mov
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\input_file.mov':
      Metadata:
        major_brand     : qt
        minor_version   : 0
        compatible_brands: qt
        creation_time   : 2021-07-06T07:24:12.000000Z
      Duration: 00:00:05.23, start: 0.000000, bitrate: 77273 kb/s
        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, smpte170m/bt709/bt709), 1920x1440, 19524 kb/s, 29.81 fps, 30 tbr, 600 tbn, 1200 tbc (default)
        Metadata:
          rotate          : 90
          creation_time   : 2021-07-06T07:24:13.000000Z
          handler_name    : Core Media Video
          encoder         : H.264
        Side data:
          displaymatrix: rotation of -90.00 degrees
        Stream #0:1(und): Data: none (mebx / 0x7862656D), 57743 kb/s (default)
        Metadata:
          creation_time   : 2021-07-06T07:24:13.000000Z
          handler_name    : Core Media Metadata


  


  (Even if it could be solve by recording with another file type(eg:mp4,mov) which swift support to save.)