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• Discord Bot can't play audio from YouTube all of a sudden

  22 mars 2023, par Aidan Tweedy

  Last night my Discord bot stopped working out of the blue. The bot had been working perfectly for months until this point - no code changes occurred and it was running in a Docker container on my home server. Then last night, my !play <url></url> command stopped working. The bot would join the voice channel, but not actually play anything. Then it would need to be manually disconnected from the voice channel in order for it to do anything again. After the first play fails, and I try again I get this error message :

  


   [youtube] crOZk88eCcg: Downloading webpage
 [youtube] crOZk88eCcg: Downloading android player API JSON
 [youtube] Extracting URL: https://www.youtube.com/watch?v=crOZk88eCcg&ab_channel=0foofighter0
 [youtube] crOZk88eCcg: Downloading webpage
 [youtube] crOZk88eCcg: Downloading android player API JSON
 [2023-03-22 00:27:59] [ERROR   ] discord.ext.commands.bot: Ignoring exception in command play
 Traceback (most recent call last):
   File "/usr/local/lib/python3.10/dist-packages/discord/ext/commands/core.py", line 190, in wrapped
     ret = await coro(*args, **kwargs)
   File "/usr/src/app/./main.py", line 180, in play
     voice.play(player, after=lambda e: print(f'Player error: {e}') if e else None)
   File "/usr/local/lib/python3.10/dist-packages/discord/voice_client.py", line 600, in play
     raise ClientException('Not connected to voice.')
 discord.errors.ClientException: Not connected to voice.
 
 The above exception was the direct cause of the following exception:
 
 Traceback (most recent call last):
   File "/usr/local/lib/python3.10/dist-packages/discord/ext/commands/bot.py", line 1347, in invoke
     await ctx.command.invoke(ctx)
   File "/usr/local/lib/python3.10/dist-packages/discord/ext/commands/core.py", line 986, in invoke
     await injected(*ctx.args, **ctx.kwargs)  # type: ignore
   File "/usr/local/lib/python3.10/dist-packages/discord/ext/commands/core.py", line 199, in wrapped
     raise CommandInvokeError(exc) from exc
 discord.ext.commands.errors.CommandInvokeError: Command raised an exception: ClientException: Not connected to voice.
 [2023-03-22 00:27:59] [INFO    ] discord.player: ffmpeg process 12 has not terminated. Waiting to terminate...
 [2023-03-22 00:27:59] [INFO    ] discord.player: ffmpeg process 12 should have terminated with a return code of -9.


  


  My first instinct was that ffmpeg was borking somehow, since it has been difficult to get working in the past. However I'm not sure how ffmpeg could've stopped working, since the bot never went down between working and not working. That leads me to believe it could be a change on Youtube/Discord's side ?

  


  For context, here is a snippet of my !play code :

  


  @client.command(pass_context = True)
async def play(ctx):
    url = ctx.message.content.split("!play ",1)[1]
    voice = discord.utils.get(client.voice_clients)
    if (ctx.author.voice):
        if voice == None:
            channel = ctx.message.author.voice.channel
            voice = await channel.connect()

        # Youtube Magic
        ydl_opts = {
        'format': 'worstaudio/worst',
        'postprocessors': [{
            'key': 'FFmpegExtractAudio',
            'preferredcodec': 'mp3',
            'preferredquality': '192',
        }],
        }

        if "http" not in url:
            yt = YoutubeSearch(url, max_results=1).to_json()
            print(yt)
            yt_id = str(json.loads(yt)['videos'][0]['id'])
            yt_channel = str(json.loads(yt)['videos'][0]['channel']).strip().replace(" ", "")
            url = 'https://www.youtube.com/watch?v='+yt_id+"&ab_channel="+yt_channel

        with yt_dlp.YoutubeDL(ydl_opts) as ydl:
            song_info=ydl.extract_info(url, download=False)
        for file in os.listdir("./"):
            if file.endswith(".mp3"):
                os.rename(file, "song.mp3")

        voice.stop()

        embed_trk = discord.Embed(
                title="Now playing",
                color=ctx.author.color,
        )
        video_title = song_info.get('title', None)
        video_channel = song_info.get('uploader', None)
        embed_trk.add_field(name="Track title", value=video_title, inline=False)
        embed_trk.add_field(name="Channel", value=video_channel, inline=False)

        await ctx.send(embed=embed_trk)
        player = await YTDLSource.from_url(url, loop=client.loop, stream=True)
        voice.play(player, after=lambda e: print(f'Player error: {e}') if e else None)
        while voice.is_playing():
            await asyncio.sleep(1)
        
        await request_record(ctx, video_title)

    else:
        await ctx.send("You must be in a voice channel to run this command")


  


• How can I combine a screenshot and two video files with ffmpeg ?

  26 novembre 2023, par lukascbossert

  I have a folder with video files. Some are .mov, some are .mp4. As a first step I am converting the .mov-files into .mp4 with :

  


  while read mov; do
   mp4=$(echo "$mov"|sed -e 's|\.mov$|.mp4|i')
   if [ "$mov" == "$mp4" ]; then
     echo "Failed to generate unique MP4 filename for file $mov"
   fi
   ffmpeg -i "$mov" -c:v libx264 -f mp4 "$mp4"
 done < <(find . -type f -iname '*.mov')


  


  This works technically fine.

  


  As a second step I need to merge two video files : the first one is always the same (intro.mp4 with audio), the second file is the either converted .mov or the .mp4 from the folder (also with audio).
Additionally I need a screenshot of the first frame from the second video, which shall be the very first frame and visible for e.g. half a second (for e.g. youtube-shorts to differentiate the videos).

  


  I create the screenshot with

  


  ffmpeg -i ${fzbVideo} -ss 1 -vframes 1 ${cover}"_%01d.jpg"


  


  which works perfectly fine.

  


  As far as I could I followed the example shown here and the documentation of ffmpeg
and created a loop for all the videos and the steps of merge screenshot and videos :

  


  for fzbVideo in *.mp4; do
    # intro should be at the beginning of each video
    intro="intro/fzb-intro.mp4"
    # getting a cover imge
    cover="$(basename ${fzbVideo} .mp4)_cover"
    # naming the output file
    fzbVideoOutput="$(basename ${fzbVideo} .mp4)_output.mp4"
    #   create a cover image from the first frame of the video
    ffmpeg -i ${fzbVideo} -ss 1 -vframes 1 ${cover}"_%01d.jpg"
    # combine the cover image with the intro and the actual video file
    ffmpeg \
-loop 1 -framerate 1 -t 1 -i ${cover}"_1.jpg" \
-i ${intro} \
-i ${fzbVideo} \
-f lavfi -t 0.1 -i anullsrc=channel_layout=stereo:sample_rate=44100 \
-filter_complex '[0:v:0][0:a:0][1:v:0][1:a:0][2:a:0][2:a:0]concat=n=3:v=1:a=1' ${fzbVideoOutput}
done


  


  But this creates the error :

  


  Stream specifier ':a:0' in filtergraph description [0:v:0][0:a:0][1:v:0][1:a:0][2:a:0][2:a:0]concat=n=3:v=1:a=1 matches no streams.


  


  What do I need to change ?
Additionally, is there a way to combine the converstion from .mov to .mp4 also in the loop (if necessary) ?

  


  ---

  


  Edit : content from the CLI, in case this is important information :

  


  ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
  built with Apple clang version 14.0.3 (clang-1403.0.22.14.1)
  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/6.0_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
Input #0, image2, from 'IMG_5546_cover_1.jpg':
  Duration: 00:00:01.00, start: 0.000000, bitrate: 836 kb/s
  Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 1080x1920, 1 fps, 1 tbr, 1 tbn
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'intro/fzb-intro.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: isommp41mp42
    creation_time   : 2023-11-24T21:59:10.000000Z
  Duration: 00:00:00.83, start: 0.000000, bitrate: 1247 kb/s
  Stream #1:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 602x1070, 1191 kb/s, 30 fps, 30 tbr, 600 tbn (default)
    Metadata:
      creation_time   : 2023-11-24T21:59:10.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
  Stream #1:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 38 kb/s (default)
    Metadata:
      creation_time   : 2023-11-24T21:59:10.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_5546.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf60.3.100
  Duration: 00:00:28.37, start: 0.000000, bitrate: 3126 kb/s
  Stream #2:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1080x1920, 2989 kb/s, 29.97 fps, 29.97 tbr, 30k tbn (default)
    Metadata:
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : Lavc60.3.100 libx264
  Stream #2:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
Stream specifier ':a' in filtergraph description [0:v] [0:a] [1:v] [1:a] [2:v] [2:a] concat=n=3:v=1:a=1 [v] [a] matches no streams.


  


• Layout Video Recording Like Instgram/ Ticktok Feature

  21 mars 2023, par Amarchand K

  I'm try to do record video inn different layouts like Instagram in Flutter. For this feature I used ffmpeg_kit_flutter package. I refers this solution to do this. but output video is blank, any one helps me to solve this.
the video input and output path is valid, also show the bellow error while printing,

  


  `ffmpeg version n5.1.2 Copyright (c) 2000-2022 the FFmpeg developers
    built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)
    configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/ffmpeg-kit/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --target-os=android --enable-neon --enable-asm --enable-inline-asm --ar=aarch64-linux-android-ar --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --ranlib=aarch64-linux-android-ranlib --strip=aarch64-linux-android-strip --nm=aarch64-linux-android-nm --extra-libs='-L/home/taner/Projects/ffmpeg-kit/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --disable-autodetect --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --disable-static --enable-shared --enable-pthreads --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-gmp --enable-gnutls --enable-iconv --disable-sdl2 --disable-openssl --enable-zlib --enable-mediacodec
    libavutil      57. 28.100 / 57. 28.100
    libavcodec     59. 37.100 / 59. 37.100
    libavformat    59. 27.100 / 59. 27.100
    libavdevice    59.  7.100 / 59.  7.100
    libavfilter     8. 44.100 /  8. 44.100
    libswscale      6.  7.100 /  6.  7.100
    libswresample   4.  7.100 /  4.  7.100
  -vsync is deprecated. Use -fps_mode
  Passing a number to -vsync is deprecated, use a string argument as described in the manual.
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/com.example.tuki_taki/cache/REC1453994379216336834.mp4':
    Metadata:
      major_brand     : mp42
      minor_version   : 0
      compatible_brands: isommp42
      creation_time   : 2023-03-21T07:15:58.000000Z
      com.android.version: 12
    Duration: 00:00:03.77, start: 0.000000, bitrate: 2204 kb/s
    Stream #0:0[0x1](eng): Video: h264, 1 reference frame (avc1 / 0x31637661), yuv420p(tv, bt470bg/smpte170m/bt709, progressive, left), 640x480, 2199 kb/s, 29.61 fps, 29.58 tbr, 90k tbn (default)
      Metadata:
        creation_time   : 2023-03-21T07:15:58.000000Z
        handler_name    : VideoHandle
        vendor_id       : [0][0][0][0]
      Side data:
        displaymatrix: rotation of -90.00 degrees
    Stream #0:1[0x2](eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 128 kb/s (default)
      Metadata:
        creation_time   : 2023-03-21T07:15:58.000000Z
        handler_name    : SoundHandle
        vendor_id       : [0][0][0][0]
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/com.example.tuki_taki/cache/REC5972384708251368209.mp4':
    Metadata:
      major_brand     : mp42
      minor_version   : 0
      compatible_brands: isommp42
      creation_time   : 2023-03-21T07:16:05.000000Z
      com.android.version: 12
    Duration: 00:00:02.84, start: 0.000000, bitrate: 2703 kb/s
    Stream #1:0[0x1](eng): Video: h264, 1 reference frame (avc1 / 0x31637661), yuv420p(tv, bt470bg/smpte170m/bt709, progressive, left), 640x480, 2801 kb/s, 29.61 fps, 29.58 tbr, 90k tbn (default)
      Metadata:
        creation_time   : 2023-03-21T07:16:05.000000Z
        handler_name    : VideoHandle
        vendor_id       : [0][0][0][0]
      Side data:
        displaymatrix: rotation of -90.00 degrees
    Stream #1:1[0x2](eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 128 kb/s (default)
      Metadata:
        creation_time   : 2023-03-21T07:16:05.000000Z
        handler_name    : SoundHandle
        vendor_id       : [0][0][0][0]
  Stream mapping:
    Stream #0:0 (h264) -> scale:default
    Stream #0:1 (aac) -> amix
    Stream #1:0 (h264) -> scale:default
    Stream #1:1 (aac) -> amix
    hstack:default -> Stream #0:0 (mpeg4)
    amix:default -> Stream #0:1 (aac)
  Press [q] to stop, [?] for help
  Output #0, mp4, to '/data/user/0/com.example.tuki_taki/cache/output.mp4':
    Metadata:
      major_brand     : mp42
      minor_version   : 0
      compatible_brands: isommp42
      com.android.version: 12
      encoder         : Lavf59.27.100
    Stream #0:0: Video: mpeg4, 1 reference frame (mp4v / 0x7634706D), yuv420p(progressive), 960x640 (0x0) [SAR 1:1 DAR 3:2], q=2-31, 200 kb/s, 29.58 fps, 11360 tbn
      Metadata:
        encoder         : Lavc59.37.100 mpeg4
      Side data:
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
    Stream #0:1: Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, delay 1024, 69 kb/s
      Metadata:
        encoder         : Lavc59.37.100 aac
  frame=    1 fps=0.0 q=4.3 size=       0kB time=00:00:00.23 bitrate=   1.5kbits/s speed=3.49x    


  


  [mpeg4 @ 0xb400007122ebac50] Invalid pts (8) <= last (8)&#xA;Error submitting video frame to the encoder&#xA;[aac @ 0xb4000071232208c0] Qavg : 9911.349&#xA;[aac @ 0xb4000071232208c0] 2 frames left in the queue on closing&#xA;Conversion failed`

  &#xA;

  I'm tried

  &#xA;

    `Future<void> onLayoutDone() async {&#xA;try {&#xA;  final String outputPath = await _getTempPath();   &#xA;  const String filter =&#xA;      "[0:v]scale=480:640,setsar=1[l];[1:v]scale=480:640,setsar=1[r];[l][r]hstack;[0][1]amix -vsync 0 ";    &#xA;  log("left path: ${layoutVideoPathList[0]} right : ${layoutVideoPathList[1]} $outputPath");     &#xA;  final String command =" -y -i ${layoutVideoPathList[0]} -i ${layoutVideoPathList[1]} -filter_complex$filter$outputPath -loglevel verbose"; `these paths are valid`    &#xA;     &#xA;  await FFmpegKit.execute(command).then((value) async {      &#xA;    String? error = await value.getAllLogsAsString();    &#xA;    log(error!);    &#xA;    final ReturnCode? returnCode = await value.getReturnCode();    &#xA;    if (returnCode != null) {&#xA;      setVideo(videoPath: outputPath);    &#xA;      layoutVideoPathList.clear();    &#xA;    }&#xA;  });&#xA;} catch (e) {&#xA;  log("error while  combine -========-=-=-=-=-=-=-=-=- $e");    &#xA;}`&#xA;</void>

  &#xA;