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• How to save media files to Heroku local storage with Django ?

  25 juillet 2022, par Diyan Kalaydzhiev

  Im having a Django REST app with React for client. Im recording a file with React and sending in to Django. When i save it i modify it with ffmpeg and save it again in the same folder with a new name, the ffmpeg command looks like this :

  


  os.system(f"ffmpeg -i {audio_path} -ac 1 -ar 16000 {target_path}")

  


  Because i need a path for my audio both for opening and saving, i can't use cloud stores like "Bucket S3, Cloudinary etc.". And the fact that im using it only for a few seconds and then deleting it makes Heroku (the app is deployed there) the perfect place to save it non-persistent. The problem is that the file isn't getting saved in my library with media files. It saves in the postgre db but doesn't in my filesystem and when i try to access it my program returns that there isn't a file with that name. My question is How can i save media files in Heroku file system and how to access them ?

  


  settings.py

  


  MEDIA_ROOT = os.path.join(BASE_DIR,'EmotionTalk/AI_emotion_recognizer/recordings')
MEDIA_URL = '/'


  


  urls.py

  


  urlpatterns = [
path('admin/', admin.site.urls),
path('', include('EmotionTalk.emotion_talk_app.urls')),
path('auth/', include('EmotionTalk.auth_app.urls')),
path('api-token-auth/', views.obtain_auth_token),
] + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT) \
+ static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)


  


  views.py

  


      def post(self, request):
    file_serializer = RecordingSerializer(data=request.data)

    if file_serializer.is_valid():
        file_serializer.save()

        file_name = file_serializer.data.get('recording')
        owner_id = file_serializer.data.get('owner_id')

        current_emotions_count = len(Profile.objects.get(user_id=owner_id).last_emotions)

        print(file_name)
        recognize_emotion.delay(file_name, owner_id)

        return Response({
            'data': file_serializer.data,
            'current_emotions_count': current_emotions_count
        }, status=status.HTTP_201_CREATED)

    return Response(file_serializer.errors, status=status.HTTP_400_BAD_REQUEST)


  


  tasks.py

  


  def parse_arguments(filename):
import argparse
parser = argparse.ArgumentParser()

new_filename = filename.lstrip('v')

parser.add_argument("audio_path")
parser.add_argument("target_path")

args = parser.parse_args([f'EmotionTalk/AI_emotion_recognizer/recordings/{filename}',
                          f'EmotionTalk/AI_emotion_recognizer/recordings/{new_filename}'])
audio_path = args.audio_path
target_path = args.target_path

if os.path.isfile(audio_path) and audio_path.endswith(".wav"):
    if not target_path.endswith(".wav"):
        target_path += ".wav"
    convert_audio(audio_path, target_path)
    return target_path
else:
    raise TypeError("The audio_path file you specified isn't appropriate for this operation")


  


  parse_arguments is called from recognize_emotion

  


• Discord.py repository example : bot can join voice channel, shows voice activity (green ring), but no sound is produced ?

  19 juin 2023, par Jared Robertson

  I copied an example from the discord.py repository to test out a bot with music capabilities. Though the code enables YouTube playback, I am only concerned with local audio playback. See code here : https://github.com/Rapptz/discord.py/blob/v2.3.0/examples/basic_voice.py. I tested this code as is with only the Discord token portion updated (from constants.py). See code below :

  


  # This example requires the 'message_content' privileged intent to function.

#my constants.py with API keys, tokens, etc. stored
import constants

import asyncio

import discord
import youtube_dl

from discord.ext import commands

# Suppress noise about console usage from errors
youtube_dl.utils.bug_reports_message = lambda: ''


ytdl_format_options = {
    'format': 'bestaudio/best',
    'outtmpl': '%(extractor)s-%(id)s-%(title)s.%(ext)s',
    'restrictfilenames': True,
    'noplaylist': True,
    'nocheckcertificate': True,
    'ignoreerrors': False,
    'logtostderr': False,
    'quiet': True,
    'no_warnings': True,
    'default_search': 'auto',
    'source_address': '0.0.0.0',  # bind to ipv4 since ipv6 addresses cause issues sometimes
}

ffmpeg_options = {
    'options': '-vn',
}

ytdl = youtube_dl.YoutubeDL(ytdl_format_options)


class YTDLSource(discord.PCMVolumeTransformer):
    def __init__(self, source, *, data, volume=0.5):
        super().__init__(source, volume)

        self.data = data

        self.title = data.get('title')
        self.url = data.get('url')

    @classmethod
    async def from_url(cls, url, *, loop=None, stream=False):
        loop = loop or asyncio.get_event_loop()
        data = await loop.run_in_executor(None, lambda: ytdl.extract_info(url, download=not stream))

        if 'entries' in data:
            # take first item from a playlist
            data = data['entries'][0]

        filename = data['url'] if stream else ytdl.prepare_filename(data)
        return cls(discord.FFmpegPCMAudio(filename, **ffmpeg_options), data=data)


class Music(commands.Cog):
    def __init__(self, bot):
        self.bot = bot

    @commands.command()
    async def join(self, ctx, *, channel: discord.VoiceChannel):
        """Joins a voice channel"""

        if ctx.voice_client is not None:
            return await ctx.voice_client.move_to(channel)

        await channel.connect()

    @commands.command()
    async def play(self, ctx, *, query):
        """Plays a file from the local filesystem"""

        source = discord.PCMVolumeTransformer(discord.FFmpegPCMAudio(query))
        ctx.voice_client.play(source, after=lambda e: print(f'Player error: {e}') if e else None)

        await ctx.send(f'Now playing: {query}')

    @commands.command()
    async def yt(self, ctx, *, url):
        """Plays from a url (almost anything youtube_dl supports)"""

        async with ctx.typing():
            player = await YTDLSource.from_url(url, loop=self.bot.loop)
            ctx.voice_client.play(player, after=lambda e: print(f'Player error: {e}') if e else None)

        await ctx.send(f'Now playing: {player.title}')

    @commands.command()
    async def stream(self, ctx, *, url):
        """Streams from a url (same as yt, but doesn't predownload)"""

        async with ctx.typing():
            player = await YTDLSource.from_url(url, loop=self.bot.loop, stream=True)
            ctx.voice_client.play(player, after=lambda e: print(f'Player error: {e}') if e else None)

        await ctx.send(f'Now playing: {player.title}')

    @commands.command()
    async def volume(self, ctx, volume: int):
        """Changes the player's volume"""

        if ctx.voice_client is None:
            return await ctx.send("Not connected to a voice channel.")

        ctx.voice_client.source.volume = volume / 100
        await ctx.send(f"Changed volume to {volume}%")

    @commands.command()
    async def stop(self, ctx):
        """Stops and disconnects the bot from voice"""

        await ctx.voice_client.disconnect()

    @play.before_invoke
    @yt.before_invoke
    @stream.before_invoke
    async def ensure_voice(self, ctx):
        if ctx.voice_client is None:
            if ctx.author.voice:
                await ctx.author.voice.channel.connect()
            else:
                await ctx.send("You are not connected to a voice channel.")
                raise commands.CommandError("Author not connected to a voice channel.")
        elif ctx.voice_client.is_playing():
            ctx.voice_client.stop()


intents = discord.Intents.default()
intents.message_content = True

bot = commands.Bot(
    command_prefix=commands.when_mentioned_or("!"),
    description='Relatively simple music bot example',
    intents=intents,
)


@bot.event
async def on_ready():
    print(f'Logged in as {bot.user} (ID: {bot.user.id})')
    print('------')


async def main():
    async with bot:
        await bot.add_cog(Music(bot))
        #referenced my discord token in constants.py
        await bot.start(constants.discord_token)


asyncio.run(main())


  


  This code should cause the Discord bot to join the voice channel and play a local audio file when the message " !play query" is entered into the Discord text channel, with query in my case being "test.mp3." When " !play test.mp3" is entered, the bot does join the voice channel and appears to generate voice activity, however no sound is heard. No errors are thrown in the output. The bot simply continues on silently.

  


  Here's what I've checked and tried :

  


  


  1. I am in the Discord voice channel. The code will alert that user is not in the voice channel if a user attempts to summon the bot without being in a voice channel.

     


  


  2. FFmpeg is installed and added to PATH. I even stored a copy of the .exe in the project folder.

     


  


  3. I've tried specifying the full path of both FFmpeg (adding the "executable=" arg to the play function) and the audio file (stored at C :/test.mp3 and a copy in the project folder).

     


  


  4. All libraries up to date.

     


  


  5. Reviewed discord.py docs (https://discordpy.readthedocs.io/en/stable/api.html#voice-related) and played around with opuslib (docs say not necessary on Windows, which I'm on) and FFmpegOpusAudio, but results were the same.

     


  


  6. Referenced numerous StackOverflow threads, including every one suggested when I typed the title of this post. Tried each suggestion individually and in various combinations when possible. See a few below :
Discord.py music_cog, bot joins channel but plays no sound
Discord.py Music Bot doesn’t play music
Discord.py Bot Not Playing music

     


  


  7. Double checked my sound is on and volume turned up. My sound is working I can hear the Discord notification when the bot joins the voice channel.

     


  


  8. Issue is the same if I try to play a YouTube file with !yt command. Bot joins channel fine but no sound is produced.

     


  


  


  That's everything I can think of at the moment. There seem to be many posts regarding this exact topic and also variations of it. I've been unable to find a clear and consistent answer, nor one the works for me. I am willing to try anything at this point as it is obviously possible, but for whatever reason success eludes me. Thank you in advance for any assistance you are willing to offer.

  


• Merge remote-tracking branch ’rbultje/vp9-profile1-wip’

  1er mai 2015, par Michael Niedermayer

  Merge remote-tracking branch ’rbultje/vp9-profile1-wip’
  * rbultje/vp9-profile1-wip :
  
    vp9 : add fate test for 422.
  
    vp9 : copy bug in libvpx for 4:2:2 chroma bs=8x4/4x4 prediction.
  
    vp9 : add yuv440 fate test.
  
    vp9 : fix mask_edges and filter_plane_rows/cols() for 440.
  
    vp9 : more specifically specify mask destination to mask_edges().
  
    vp9 : add fate test for profile 1 444.
  
    vp9 : don’t create special u/v filter masks for 444.
  
    vp9 : merge uv loopfilter code into generic filter_plane_rows/cols().
  
    vp9 : split out loopfilter luma rows/cols functions from loopfilter_sb().
  
    vp9 : invert order of two conditions.
  
    vp9 : use correct chroma subsampling for profile 1 inter block recon.
  
    vp9 : use correct chroma subsampling for profile 1 intra block recon.
  
    vp9 : take chroma subsampling into account when walking the block tree.
  
    vp9 : support non-420 chroma subsampling for profile 1 token decoding.
  
    vp9 : increase buffer sizes for non-420 chroma subsamplings.
  
    vp9 : profile 1 header decoding.
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/vp9.c
  • [DH] libavcodec/vp9_mc_template.c
  • [DH] tests/fate/vpx.mak
  • [DH] tests/ref/fate/vp9p1-04-yuv422
  • [DH] tests/ref/fate/vp9p1-04-yuv440
  • [DH] tests/ref/fate/vp9p1-04-yuv444