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• Failed to install ffmpeg. Failed to download resource "x265"

  19 août 2020, par Olha Olha

  I was trying to run "brew install ffmpeg" and two download links failed. So it failed the installation.

  


  Those are the links that aren't working :

  


  ==> Downloading https://mirrors.edge.kernel.org/pub/software/scm/git/git-htmldocs-2.28.0.tar.
==> Downloading https://bitbucket.org/multicoreware/x265/downloads/x265_3.4.tar.gz


  


  I got this errors :

  


  Error: Failed to download resource "git--html"

Download failed: https://mirrors.edge.kernel.org/pub/software/scm/git/git-htmldocs-2.28.0.tar.xz

Error: Failed to download resource "x265"

Download failed: https://bitbucket.org/multicoreware/x265/downloads/x265_3.4.tar.gz


  


• How to download a part of mp3 from server ?

  20 août 2020, par Sharukh Mohammed

  Use Case

  


  My use case is roughly equal to, adding a 15-second mp3 file to a 1 min video. All transcoding merging part will be done by FFmpeg-android so that's not the concern right now.

  


  The flow is as follows

  


  

  • User can select any 15 seconds (ExoPlayer-streaming) of an mp3 (considering 192Kbps/44.1KHz of 3mins = up to 7MB)

  


  • Then download ONLY the 15 second part and add it to the video's audio stream. (using FFmpeg)

  


  • Use the obtained output

  


  


  Tried solutions

  


  


  • Extracting fragment of audio from a url

    


    RANGE_REQUEST - I have replicated the exact same algorithm/formula in Kotlin using the exact sample file provided. But the output is not accurate (± 1.5 secs * c) where c is proportional to startTime

    


  


  • How to crop a mp3 from x to x+n using ffmpeg ?

    


    FFMPEG_SS - This works flawlessly with remote URLs as input, but there are two downsides,

    


    

    1. as startTime increases, the size of downloaded bytes are closer to the actual size of the mp3.

    


    2. ffmpeg-android does not support network requests module (at least the way we complied)

    


    


  


  


  So above two solutions have not been fruitful and currently, I am downloading the whole file and trimming it locally, which is definitely a bad UX.
I wonder how Instagram's music addition to story feature works because that's close to what I wanted to implement.

  


• Unable to download a file using youtube_dl

  22 octobre 2020, par perkymaster

  I am trying to play music from a bot using ffmpeg and youtube_dl by making using of discord.py but it seems that I am unable to download the file

  


  Here is my code :

  


  voice = get(client.voice_clients, guild=ctx.guild)

ydl_opts={
    'format': 'bestaudio/best',
    'noplaylist': 'True',
    'postprocessors': [{
        'key': 'FFmpegExtractAudio',
        'preferredcodec':'mp3',
        'preferredquality':'192',
    }],
}

with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    print("Downloading audio now \n")
    ydl.download([url])

for file in os.listdir("./"):
    if file.endswith(".mp3"):
        name=file
        print(f"Renamed File: {file}\n")
        os.rename(file, "song.mp3")

voice.play(discord.FFmpegPCMAudio('song.mp3'), after=lambda e: print(f"{name} has finished playing"))
voice.is_playing()
voice.source=discord.PCMVolumeTransformer(voice.source)
voice.source.volume= 0.7

nname = name.rsplit("-", 2)
await ctx.send(f"Playing {nname}")
print("Playing \n")


  


  Nothing seems to happen, the bot is not playing any music.

  


  I am new to this, can anyone help ?