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• Discord Bot // Voice Client Returns NoneType

  1er mai 2022, par DimKewl

  Experimenting with Discord and Python followed a couple of guides and created a bot that could play music from streaming URLs.

  


  However, now for the same code, I get Attribute Error : 'NoneType' object exceptions.

  


  Exception snippet
Console Snapshot

  


  The actual method goes like this :

  


  .
.
    FFMPEG_OPTIONS = {
    "before_options": "-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5",
    "options": "-vn -sn -dn"
}

@commands.command()
async def radio(self,ctx,url):
    await self.join(ctx)
    await self.playStreamUrlLogic(ctx,url);

async def playStreamUrlLogic(self, ctx, url):
    source = await discord.FFmpegOpusAudio.from_probe(url, **self.FFMPEG_OPTIONS)
    await ctx.voice_client.play(source)
.
.


  


  Even though everything points to a non instantiated class when I debug I can see that there is a voice_client object with info
Snapshot from Debbuger property viewer

  


  I already tried to use FFMPegPCMAudio as well but with no results.
Any insights would be helpful.

  


• An H264 encoded MP4 file cannot be played by VLC/HTML5 browsers, is there any header or meta data I can add to fix it ? [migrated]

  5 avril 2015, par user534498

  I have an MP4 file, which is H264 encoded. I saved the file from RTP streams, with sprop-property-sets in front, and followed by frames. (Note. VLC can directly play the RTP stream without problem.)

  The file can be played by "Videos" program in Linux. If I play it with VLC 2.1.4 in Linux, it shows the following error.

  No suitable decoder module : VLC does not support the audio or video
  format "undf". Unfortunately there is no way for you to fix this.

  I then open VLC, from preference menu, I change the Demuxer (demultiplexer) from automatic to "H264 Video Demuxer". VLC can then play it.

  So it seems that the problem is VLC cannot automatically detect a demuxer from the video file. However, I am sure that my video file has only video data, and it doesn’t even have audio (may not even need a demuxer ?)

  I put this file in HTTP server, and use "video" tag for testing, all IE, chrome and firefox browsers cannot play this file, and I guess it’s the same reason as VLC cannot play it.

  So is there a way to fix it ? For example, is there any place I can add a header to tell VLC or similar players to choose H264 video demuxer ?

  Thanks.

• ffmpeg 4.2.2 gives segmentation fault after a while

  2 février 2020, par Eric Feillant

  I have compiled ffmpeg 4.2.2 and it gives me a segmatation fault after a while and i don’t knw why, i put it the request and a part of the debug log file.
  My ffmpeg request :
  /usr/local/bin/ffmpeg -loglevel debug -use_wallclock_as_timestamps 1 -rtsp_transport tcp -i "rtsp ://root:My_PW@My_IP_Address:5541/live.sdp" -f image2 -loop 1 -i ./overlay_score_160.png -i ./partenaire.png -filter_complex ’overlay=x=2:y=1,overlay=(main_w-overlay_w)/2:y=1’ -framerate 25 -crf 18 -preset veryfast -g 50 -vcodec libx264 -acodec copy -f flv rtmp ://localhost/hls/stream1 -async 1 -vsync 1 2> debug.txt

  ffmpeg version 4.2.2-eric-01022020-FF422 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
  
    configuration: --prefix=/usr/local --enable-gpl --enable-version3 --enable-nonfree --disable-static --enable-shared --disable-debug --enable-avresample --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-pthreads --enable-libfreetype --enable-filters --enable-openssl --enable-runtime-cpudetect --enable-libxvid --enable-libfontconfig --enable-libspeex --extra-version=eric-01022020-FF422 --docdir=/usr/share/doc/ffmpeg-4.2.2
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  Splitting the commandline.
  
  Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
  
  Reading option '-use_wallclock_as_timestamps' ... matched as AVOption 'use_wallclock_as_timestamps' with argument '1'.
  
  Reading option '-rtsp_transport' ... matched as AVOption 'rtsp_transport' with argument 'tcp'.
  
  Reading option '-i' ... matched as input url with argument 'rtsp://root:MyPW@My_IP_Address:5541/live.sdp'.
  
  Reading option '-f' ... matched as option 'f' (force format) with argument 'image2'.
  
  Reading option '-loop' ... matched as AVOption 'loop' with argument '1'.
  
  Reading option '-i' ... matched as input url with argument './overlay_score_160.png'.
  
  Reading option '-i' ... matched as input url with argument './partenaire.png'.
  
  Reading option '-filter_complex' ... matched as option 'filter_complex' (create a complex filtergraph) with argument 'overlay=x=2:y=1,overlay=(main_w-overlay_w)/2:y=1'.
  
  Reading option '-framerate' ... matched as AVOption 'framerate' with argument '25'.
  
  Reading option '-crf' ... matched as AVOption 'crf' with argument '18'.
  
  Reading option '-preset' ... matched as AVOption 'preset' with argument 'veryfast'.
  
  Reading option '-g' ... matched as AVOption 'g' with argument '50'.
  
  Reading option '-vcodec' ... matched as option 'vcodec' (force video codec ('copy' to copy stream)) with argument 'libx264'.
  
  Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'copy'.
  
  Reading option '-f' ... matched as option 'f' (force format) with argument 'flv'.
  
  Reading option 'rtmp://localhost/hls/stream1' ... matched as output url.
  
  Reading option '-async' ... matched as option 'async' (audio sync method) with argument '1'.
  
  Reading option '-vsync' ... matched as option 'vsync' (video sync method) with argument '1'.
  
  Finished splitting the commandline.
  
  Parsing a group of options: global .
  
  Applying option loglevel (set logging level) with argument debug.
  
  Applying option filter_complex (create a complex filtergraph) with argument overlay=x=2:y=1,overlay=(main_w-overlay_w)/2:y=1.
  
  Applying option async (audio sync method) with argument 1.
  
  Applying option vsync (video sync method) with argument 1.
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input url rtsp://root:MyPW@My_IP_Address:5541/live.sdp.
  
  Successfully parsed a group of options.
  
  
  
  ........
  
  
  
  [libx264 @ 0x55819256fc00] frame=24887 QP=17.51 NAL=2 Slice:P Poc:80  I:53   P:783  SKIP:38   size=8835 bytes
  
  [libx264 @ 0x55819256fc00] frame=24888 QP=21.08 NAL=2 Slice:B Poc:76  I:0    P:219  SKIP:655  size=254 bytes
  
  [h264 @ 0x5581925ca200] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  [image2 @ 0x558192485380] Opening './overlay_score_160.png' for reading
  
  [file @ 0x7f32640080c0] Setting default whitelist 'file,crypto'
  
  [AVIOContext @ 0x7f3264008140] Statistics: 1988 bytes read, 0 seeks
  
  [Parsed_overlay_0 @ 0x5581927cbf00] n:20781.000000 t:831.281311 pos:nan x:2.000000 xi:2 y:1.000000 yi:0
  
  [Parsed_overlay_1 @ 0x5581927cdf00] n:20781.000000 t:831.281311 pos:nan x:258.000000 xi:258 y:1.000000 yi:0
  
  Clipping frame in rate conversion by 0.474174
  
  [libx264 @ 0x55819256fc00] frame=24889 QP=22.84 NAL=0 Slice:B Poc:74  I:0    P:7    SKIP:867  size=36 bytes
  
  [h264 @ 0x5581925e68c0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  [Parsed_overlay_0 @ 0x5581927cbf00] n:20782.000000 t:831.311122 pos:nan x:2.000000 xi:2 y:1.000000 yi:0
  
  [Parsed_overlay_1 @ 0x5581927cdf00] n:20782.000000 t:831.311122 pos:nan x:258.000000 xi:258 y:1.000000 yi:0
  
  Clipping frame in rate conversion by 0.580742
  
  [libx264 @ 0x55819256fc00] frame=24890 QP=22.80 NAL=0 Slice:B Poc:78  I:0    P:190  SKIP:684  size=167 bytes
  
  [h264 @ 0x558192603080] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  [image2 @ 0x558192485380] Opening './overlay_score_160.png' for reading
  
  [file @ 0x7f3264007f80] Setting default whitelist 'file,crypto'
  
  [AVIOContext @ 0x7f3264008300] Statistics: 1988 bytes read, 0 seeks
  
  [Parsed_overlay_0 @ 0x5581927cbf00] n:20783.000000 t:831.351278 pos:nan x:2.000000 xi:2 y:1.000000 yi:0
  
  [Parsed_overlay_1 @ 0x5581927cdf00] n:20783.000000 t:831.351278 pos:nan x:258.000000 xi:258 y:1.000000 yi:0
  
  Clipping frame in rate conversion by 0.377281
  
  [libx264 @ 0x55819256fc00] frame=24891 QP=17.17 NAL=2 Slice:P Poc:88  I:1    P:230  SKIP:643  size=806 bytes
  
  frame=24917 fps= 30 q=24.0 size=   25410kB time=00:13:51.90 bitrate= 250.2kbits/s dup=6033 drop=1899 speed=   1x    ^M[h264 @ 0x55819261f840] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  [image2 @ 0x558192485380] Opening './overlay_score_160.png' for reading
  
  [file @ 0x7f3264006d80] Setting default whitelist 'file,crypto'
  
  [AVIOContext @ 0x7f32640080c0] Statistics: 1988 bytes read, 0 seeks
  
  [Parsed_overlay_0 @ 0x5581927cbf00] n:20784.000000 t:831.372222 pos:nan x:2.000000 xi:2 y:1.000000 yi:0
  
  [Parsed_overlay_1 @ 0x5581927cdf00] n:20784.000000 t:831.372222 pos:nan x:258.000000 xi:258 y:1.000000 yi:0
  
  Past duration 0.749565 too large
  
  [libx264 @ 0x55819256fc00] frame=24892 QP=18.73 NAL=2 Slice:B Poc:84  I:0    P:29   SKIP:845  size=80 bytes
  
  [h264 @ 0x55819263c000] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  [image2 @ 0x558192485380] Opening './overlay_score_160.png' for reading
  
  [file @ 0x7f3264007f80] Setting default whitelist 'file,crypto'
  
  [AVIOContext @ 0x7f32640080c0] Statistics: 1988 bytes read, 0 seeks
  
  [image2 @ 0x558192485380] Opening './overlay_score_160.png' for reading
  
  [file @ 0x7f3264006d80] Setting default whitelist 'file,crypto'
  
  [AVIOContext @ 0x7f32640080c0] Statistics: 1988 bytes read, 0 seeks

  Then i get "Segmentation fault" and ffmpeg exits