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• How to get best audio quality on music bot using discord.py ?

  9 mai 2021, par user28606

  I've built a discord music bot in discord.py but for some reason, it doesn't play music in as high quality as Fredboat or Rythm(so I don't think voice chat's bitrate is the problem). I've tried a couple of things online.

  


  The only thing that improved quality a little bit was downloading the song before playing it. But the quality was still far from anything like Fredboat's. It's also very impractical since downloading a 1h song takes a while and is space consuming.

  


  I'm interested in how to fix this and the explanation for why this is happening.

  


  This is the code we're currently using for the music bot :

  


  from discord import FFmpegPCMAudio
import discord
from apscheduler.schedulers.asyncio import AsyncIOScheduler
from apscheduler.triggers.cron import CronTrigger
from discord.ext import commands, tasks
from youtubesearchpython import VideosSearch

class cmd_music(commands.Cog, name="music_commands"):

    def __init__(self, bot):
        self.bot = bot
        self.music_queue = []
        self.scheduler = AsyncIOScheduler()
        self.scheduler.add_job(self.check_queue, CronTrigger(second="0,5,10,15,20,25,30,35,40,45,50,55"))
        self.scheduler.start()
    
    async def play_raw(self, voice_client):
        if not self.music_queue:
            return

        YDL_OPTIONS = {'format': 'bestaudio', 'noplaylist':'True'}
        FFMPEG_OPTIONS = {'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': '-vn'}
        if not voice_client.is_playing():
            with YoutubeDL(YDL_OPTIONS) as ydl:
                info = ydl.extract_info(self.music_queue.pop(0), download=False)
            URL = info['formats'][0]['url']
            voice_client.play(FFmpegPCMAudio(URL, **FFMPEG_OPTIONS))
            voice_client.is_playing()

    async def check_queue(self):
        if not self.bot.voice_clients: return
        
        client = self.bot.voice_clients[0]
        if not client.is_playing():
            if self.music_queue:
                await self.play_raw(client)
           
        
    @commands.command(brief="join")
    async def join(self, ctx):
        await ctx.author.voice.channel.connect()

    @commands.command(brief="leave")
    async def leave(self, ctx):
        await ctx.voice_client.disconnect()
        self.music_queue = []

    @commands.command(brief="play")
    async def play(self, ctx, *name):
        url = VideosSearch(" ".join(name[:]), 1).result().get("result")[0].get("link")
        self.music_queue.append(url)
        await ctx.send("Now playing: " + url)

    @commands.command(brief="skip")
    async def skip(self, ctx):
        await ctx.send("Skipped current song")
        ctx.voice_client.stop()
        if self.music_queue:
            await self.play_raw(ctx.voice_client)``` 


  


• ffmpeg.exe not detecting UScreenCapture

  14 janvier 2021, par TenG

  I have two version of ffmpeg on the Windows 7 PC.

  


  The first came installed with an application, which uses ffmpeg to capture video/audio of the desktop. This works.

  


  It uses an older version of ffmpeg, so I downloaded the latest version and tried the same command and it reports that the devices are not detected.

  


  Commands run :

  


  Old FFMPEG :

  


  ffmpeg.exe -list_devices true -f dshow -i dummy

  


  ffmpeg version N-70358-g047fd98 Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-f
rei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --ena
ble-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-
amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-li
btheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --e
nable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklin
k --enable-zlib
  libavutil      54. 19.100 / 54. 19.100
  libavcodec     56. 26.100 / 56. 26.100
  libavformat    56. 23.106 / 56. 23.106
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 11.102 /  5. 11.102
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
[dshow @ 04a8a500] DirectShow video devices (some may be both video and audio devices)
[dshow @ 04a8a500]  "VF0700 Live! Cam Chat HD"
[dshow @ 04a8a500]     Alternative name "@device_pnp_\\?\usb#vid_041e&pid_4088&mi_00#7&b015b04&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c
9223196}\global"
[dshow @ 04a8a500]  "UScreenCapture"
[dshow @ 04a8a500]     Alternative name "@device_sw_{860BB310-5D01-11D0-BD3B-00A0C911CE86}\UScreenCapture"
[dshow @ 04a8a500]  "screen-capture-recorder"
[dshow @ 04a8a500]     Alternative name "@device_sw_{860BB310-5D01-11D0-BD3B-00A0C911CE86}\{4EA6930A-2C8A-4AE6-A561-56E4B5044439}"
[dshow @ 04a8a500] DirectShow audio devices
[dshow @ 04a8a500]  "Microphone (VF0700 Live! Cam Ch"
[dshow @ 04a8a500]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Microphone (VF0700 Live! Cam Ch"
[dshow @ 04a8a500]  "virtual-audio-capturer"
[dshow @ 04a8a500]     Alternative name "@device_sw_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\{8E14549B-DB61-4309-AFA1-3578E927E935}"
dummy: Immediate exit requested


  


  New FFMPEG :

  


  ffmpeg version N-100616-gca21cb1e36 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 9.3-win32 (GCC) 20200320
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --a
rch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv
--enable-zlib --enable-libxml2 --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-open
cl --enable-libvmaf --disable-vulkan --enable-libvorbis --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-li
bdavs2 --enable-ffnvcodec --enable-cuda-llvm --disable-libglslang --enable-libass --enable-libbluray --enable-libmp3lame --enable-li
bopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --en
able-libopenjpeg --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-
libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-li
bxvid --enable-libzimg --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-libs=-lgomp
  libavutil      56. 63.100 / 56. 63.100
  libavcodec     58.116.100 / 58.116.100
  libavformat    58. 65.101 / 58. 65.101
  libavdevice    58. 11.103 / 58. 11.103
  libavfilter     7. 95.100 /  7. 95.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
[dshow @ 000000000052cc00] DirectShow video devices (some may be both video and audio devices)
[dshow @ 000000000052cc00]  "VF0700 Live! Cam Chat HD"
[dshow @ 000000000052cc00]     Alternative name "@device_pnp_\\?\usb#vid_041e&pid_4088&mi_00#7&b015b04&0&0000#{65e8773d-8f56-11d0-a3
b9-00a0c9223196}\global"
[dshow @ 000000000052cc00] DirectShow audio devices
[dshow @ 000000000052cc00]  "Microphone (VF0700 Live! Cam Ch"
[dshow @ 000000000052cc00]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Microphone (VF0700 Live! Cam Ch"
dummy: Immediate exit requested


  


  The new version is not detecting the following :

  


  [dshow @ 04a8a500]  "UScreenCapture"
[dshow @ 04a8a500]     Alternative name "@device_sw_{860BB310-5D01-11D0-BD3B-00A0C911CE86}\UScreenCapture"
[dshow @ 04a8a500]  "screen-capture-recorder"
[dshow @ 04a8a500]     Alternative name "@device_sw_{860BB310-5D01-11D0-BD3B-00A0C911CE86}\{4EA6930A-2C8A-4AE6-A561-56E4B5044439}"
[dshow @ 04a8a500]  "virtual-audio-capturer"
[dshow @ 04a8a500]     Alternative name "@device_sw_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\{8E14549B-DB61-4309-AFA1-3578E927E935}"


  


  Why is this ?

  


• avcodec/lossless_videoencdsp : Fix unaligned access

  13 mars 2024, par Andreas Rheinhardt

  avcodec/lossless_videoencdsp : Fix unaligned access
  HAVE_FAST_UNALIGNED being true does not imply that
  
  one can simply read from any pointer via *(long*).
  
  It is undefined behaviour in case the pointer is not
  
  sufficiently aligned ; and even if it is, it is (likely)
  
  a violation of the effective-type rules. Fix both
  
  of these by using the appropriate AV_[RW]N macros.
  Also, the current code used sizeof(long) as if this
  
  were the CPU's native arithmetic size, but this is
  
  not true on 64bit Windows. This has been fixed, too.
  This affected huffyuv FATE-tests.
  Tested-by : Sean McGovern <gseanmcg@gmail.com>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/lossless_videoencdsp.c