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• Cannot play mp4 video with ffplay, but mpv can

  4 septembre 2021, par guapi

  I want to play a mp4 video on Debian 9.

  


  First, I try to use ffplay to play the video. I use the command ffplay test.mp4, but it cannot play, and display many same errors Receive_frame and send_packet both returned EAGAIN, which is an API violation.. There are detailed logs.

  


  $ffplay test.mp4
ffplay version n3.4.1-1-g84bbe2b650-1 Copyright (c) 2003-2017 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
  configuration: --prefix=/usr --extra-version=1 --toolchain=hardened --libdir=/usr/lib/aarch64-linux-gnu --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-version3 --enable-rkmpp --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --cross-prefix=aarch64-linux-gnu- --arch=arm64 --target-os=linux --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':q=    0B f=0/0   
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    artist          : 陈奕迅
    comment         : 163 key(Don't modify):clknHbeu87C/TSIpwWw5+/XVNX46iNc6ZUUI/NNBEnGJkB4J9X28bm/OzW54+zpI0NB1+t6V7QGaqmB68bMFun4XNP4wNmDOIp4WWeRm39qy/b0byW/uCuwv/MCWns8cctlzaCGCgZ1BwPvgwiafBMYcHpKHd1o0LSoaK+04tV2kClpKQTalNso32/6iLaRha+HEQqp6uyHtqsB8zoqnbIwint4Dni3AwFID6Y4aN
    title           : 梦想天空分外蓝
    encoder         : Lavf57.71.100
  Duration: 00:03:20.45, start: 0.000000, bitrate: 834 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 854x480 [SAR 1:1 DAR 427:240], 700 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
mpi: mpp version: 073ceeb author: Jacob Chen DEBIAN: update rules for release_20171218
mpp_log: can not found match soc name: rockchip,rp px30 linux rockchip,px30 
hal_h264d_api: hal_h264d_init mpp_buffer_group_get_internal used ion In
mpp_rt: NOT found ion allocator
mpp_rt: found drm allocator
[h264_rkmpp @ 0x7f7003a000] Decoder noticed an info change (854x480), format=0
[h264_rkmpp @ 0x7f7003a000] Receive_frame and send_packet both returned EAGAIN, which is an API violation.
[h264_rkmpp @ 0x7f7003a000] Receive_frame and send_packet both returned EAGAIN, which is an API violation.
[h264_rkmpp @ 0x7f7003a000] Receive_frame and send_packet both returned EAGAIN, which is an API violation.
[h264_rkmpp @ 0x7f7003a000] Receive_frame and send_packet both returned EAGAIN, which is an API violation.
[h264_rkmpp @ 0x7f7003a000] Receive_frame and send_packet both returned EAGAIN, which is an API violation.
[h264_rkmpp @ 0x7f7003a000] Receive_frame and send_packet both returned EAGAIN, which is an API violation.
[h264_rkmpp @ 0x7f7003a000] Receive_frame and send_packet both returned EAGAIN, which is an API violation.



  


  Then, I try to use mpv to play the video. I use the command mpv test.mp4, and it successfully play the video. There are detailed logs.

  


  $mpv test.mp4
Playing: test.mp4
 (+) Video --vid=1 (*) (h264 854x480 25.000fps)
 (+) Audio --aid=1 --alang=und (*) (aac 2ch 44100Hz)
File tags:
 Artist: 陈奕迅
 Comment: 163 key(Don't modify):clknHbeu87C/TSIpwWw5+/XVNX46iNc6ZUUI/NNBEnGJkB4J9X28bm/OzW54+zpI0NB1+t6V7QGaqmB68bMFun4XNP4wNmDOIp4WWeRm39qy/b0byW/uCuwv/MCWns8cctlzaCGCgZ1BwPvgwiafBMYcHpKHd1o0LSoaK+04tV2kClpKQTalNso32/6iLaRha+HEQqp6uyHtqsB8zoqnbIwint4Dni3AwFID6Y4aNZYwtXYGiF6L7DDWSezw0ICX
 Title: 梦想天空分外蓝
ERROR: The DDK is not compatible with any of the Mali GPUs on the system.
The DDK was built for 0x860 r2p0 status range [0..15], but none of the GPUs matched:
/dev/mali0 detected as 0x7093 r0p0 status 0
[vo/x11] Warning: this legacy VO has bad performance. Consider fixing your graphics drivers, or not forcing the x11 VO.
AO: [alsa] 44100Hz stereo 2ch float
VO: [x11] 854x480 yuv420p
[ffmpeg] swscaler: No accelerated colorspace conversion found from yuv420p to bgra.
[ffmpeg] swscaler: No accelerated colorspace conversion found from yuv420p to bgra.
[ffmpeg] swscaler: No accelerated colorspace conversion found from yuv420p to bgra.
AV: 00:00:03 / 00:03:20 (1%) A-V:  0.000



  


  I don’t know much about video encoding and decoding. Both mpv and ffplay use ffmpeg for video decoding, but why are the results different ?
Thanks in advance.

  


  There is the information of my system.

  


  $uname -a
Linux linaro-alip 4.4.189 #24 SMP Tue Jul 21 17:01:59 CST 2020 aarch64 GNU/Linux


  


  $cat /proc/version
Linux version 4.4.189 (rpdzkj@rpdzkj) (gcc version 6.3.1 20170404 (Linaro GCC 6.3-2017.05) ) #24 SMP Tue Jul 21 17:01:59 CST 2020


  


  $lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 9.13 (stretch)
Release:    9.13
Codename:   stretch


  


• Music bot returning errors at core.py and bot.py

  13 septembre 2021, par Loganox

  The code for the music bot I'm trying to write in python keeps returning an error with the following code :

  


  @bot.command(name='play_song', help='To play song')
async def play(ctx,url):
    
    #if not ctx.message.author.name=="Rohan Krishna" :
    #     await ctx.send('NOT AUTHORISED!')
    #     return
    if 1==1:#try :
        server = ctx.message.guild
        voice_channel = server.voice_client
        print("try 1 was a success")
        
        async with ctx.typing():
            filename = await YTDLSource.from_url(url, loop=bot.loop)
            #voice_channel.play(discord.FFmpegPCMAudio(executable="ffmpeg.exe", source=filename)) #ISSUE HERE
            print("try 2 was a success")
            voice = get(ctx.bot.voice_clients, guild=ctx.guild)
    
            #voice.play(discord.FFmpegPCMAudio('test.mp3'), after=your_check)
            #voice.source = discord.PCMVolumeTransformer(voice.source)
            #voice.source.volume = 0.5
        await ctx.send('**Now playing:** {}'.format(filename))
    if 1==0:#except:
        await ctx.send("The bot is not connected to a voice channel.")
        print("try 3 was unfortunately a success")


  


  It normally has a try/except function but I replaced it with if true and false statements to force it to run instead of breaking to determine the exact line of it breaking. The issue supposedly lies in

  


  voice_channel.play(discord.FFmpegPCMAudio(executable="ffmpeg.exe", source=filename)) #ISSUE HERE


  


  The error I get returned is :

  


  Traceback (most recent call last):
  File "C:\Users\heyin\anaconda3\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "app2.py", line 75, in play
    voice.play(discord.FFmpegPCMAudio('test.mp3'), after=your_check)
  File "C:\Users\heyin\anaconda3\lib\site-packages\discord\player.py", line 225, in __init__
    super().__init__(source, executable=executable, args=args, **subprocess_kwargs)
  File "C:\Users\heyin\anaconda3\lib\site-packages\discord\player.py", line 138, in __init__
    self._process = self._spawn_process(args, **kwargs)
  File "C:\Users\heyin\anaconda3\lib\site-packages\discord\player.py", line 147, in _spawn_process
    raise ClientException(executable + ' was not found.') from None
discord.errors.ClientException: ffmpeg was not found.

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

Traceback (most recent call last):
  File "C:\Users\heyin\anaconda3\lib\site-packages\discord\ext\commands\bot.py", line 939, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\heyin\anaconda3\lib\site-packages\discord\ext\commands\core.py", line 863, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "C:\Users\heyin\anaconda3\lib\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: ClientException: ffmpeg was not found.


  


  I added the print statements to determine which lines were working so those can obviously be ignored. It seems to be working fine except for this, other commands in the bot are working appropriately.

  


• discord bot music with youtube dl not stuck at webpage downloading

  22 septembre 2021, par patricebailey1998

  So I'm trying to make a music bot which just joins,plays,stops and resume music. However my bot can join and leave a voice channel fine, however when i do my /play command it get stuck on [youtube] oCveByMXd_0: Downloading webpage (this is output in vscode) and then does nothing after. I put some print statement (which you can see in the code below and it prints 1 and 2 but NOT 3). Anyone had this issue ?

  


  MUSIC BOT FILE

  


  import discord
from discord.ext import commands
import youtube_dl

class music(commands.Cog):
    def __init__(self, bot):
        self.bot = bot
        
    @commands.command()
    async def join(self, ctx):
        if(ctx.author.voice is None):
            await ctx.reply("*You're not in a voice channel.*")
        voiceChannel = ctx.author.voice.channel
        if(ctx.voice_client is None): # if bot is not in voice channel
            await voiceChannel.connect()
        else: # bot is in voice channel move it to new one
            await ctx.voice_client.move_to(voiceChannel)

    @commands.command()
    async def leave(self, ctx):
        await ctx.voice_client.disconnect()
        
    @commands.command()
    async def play(self,ctx, url:str = None):
        if(url == None):
            await ctx.reply("*Check your arguments!*\n```/play VIDEO_URL```")
        else:
            ctx.voice_client.stop() # stop current song
            
            # FFMPEG handle streaming in discord, and has some standard options we need to include
            FFMPEG_OPTIONS = {'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': '-vn'}
            YTDL_OPTIONS = {"format":"bestaudio"}
            vc = ctx.voice_client
            
            # Create stream to play audio and then stream directly into vc
            with youtube_dl.YoutubeDL(YTDL_OPTIONS) as ydl:
                info = ydl.extract_info(url, download=False)
                print("1")
                url2 = info["formats"][0]["url"]
                print("2")
                source = await discord.FFmpegOpusAudio.from_probe(url2,FFMPEG_OPTIONS)
                print("3")
                vc.play(source) # play the audio
                await ctx.send(f"*Playing {info['title']} -* ퟎ