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• Saving individual frames of multiple m3u8 streams

  10 décembre 2023, par Toprak

  I have a list of multiple m3u8 stream URLs. I want to grab individual live frames of these streams and save them locally. I managed to do this with openCv however, the number of streams is around 20, even though I wrote the code using parallel processing and multithreading, some streams wait too long to download the new frames.

  


  Is there a better way or faster module that I can use ? Theoretically it shouldn't be this hard because I can open each stream in browser and the client side player can stream it. I feel like maybe ffmpeg is a solution, but I couldn't find a way to download and save each frame from a stream link by ffmpeg, with a unique name so. it doesn't update all the time.

  


  Edit :
I attempted to this issue with ffmpeg as well, using multithreading , but probably because each time they want to grab a frame, they need to connect, this is slower.

  


  ffmpeg -i url.m3u8 -vframes 1 -q:v 2 output.jpg

  


• ffplay, rtsp and tcp transport protocol

  27 juillet 2022, par Denis Gottardello

  I have a problem on connect to a rtsp camera using ffplay.
The camera is under a router that permits only the TCP protocol.
I can watch the camera using ffplay only if I am in the same network of the camera.
So, when I am out, using this command line

  


  ffplay rtsp://address:554/onvif1


  


  or this

  


  ffplay -rtsp_transport tcp rtsp://address:554/onvif1


  


  I cannot watch the camera.
This is the output of ffplay (the latest).

  


  [rtsp @ 059ee680] Nonmatching transport in server reply  0B f=0/0
rtsp://address:554:/onvif1: Invalid data found when processing input


  


  Trying with VLC and I can watch the camera without any problem, both when I am in the same network or when I am out. The VLC output says that VLC uses TCP.
Has someone got a suggestion ?

  


• How do i get access to subproccess.py ?

  6 décembre 2023, par Kronik71

  So, my bot for some reason wants to access a folder in \WindowsApps\PythonSoftwareFoundation.Python.bunch_of_numbers\Lib called subproccess.py but it always gives the error : PermissionError: [WinError 5] Access is denied. I think it has to do with ffmpeg.

  


  Here's the full traceback (kinda long) :

  


  Traceback (most recent call last):
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\client\client.py", line 1900, in __dispatch_interaction
    response = await callback
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\client\client.py", line 1771, in _run_slash_command
    return await command(ctx, **ctx.kwargs)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\models\internal\command.py", line 132, in __call__
    await self.call_callback(self.callback, context)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\models\internal\application_commands.py", line 802, in call_callback
    return await self.call_with_binding(callback, ctx)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\models\internal\callback.py", line 43, in call_with_binding
    return await callback(*args, **kwargs)
  File "C:\Users\myuser\OneDrive\Desktop\button.py", line 38, in press
    voice_client.play(discord.FFmpegPCMAudio(executable=r"C:\Users\myuser\OneDrive\Desktop\ffmpeg-6.1-essentials_build\bin", source=audiosource))
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.Bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 290, in __init__
    super().__init__(source, executable=executable, args=args, **subprocess_kwargs)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 166, in __init__
    self._process = self._spawn_process(args, **kwargs)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 180, in _spawn_process
    process = subprocess.Popen(args, creationflags=CREATE_NO_WINDOW, **subprocess_kwargs)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.bunch_of_numbers\lib\subprocess.py", line 971, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.bunch_of_numbers\lib\subprocess.py", line 1456, in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
PermissionError: [WinError 5] Access is denied


  


  heres my code :

  


  import interactions
import discord
from discord import FFmpegPCMAudio
import tracemalloc

ffmpegexec = r"C:\Users\myuser\OneDrive\Desktop\ffmpeg-6.1-essentials_build\bin\ffmpeg.exe"

audiosource = r"C:\Users\myuser\Downloads\seatbelt-online-audio-converter.mp3"

source = discord.FFmpegPCMAudio(audiosource)

token = "my_token"

bot = interactions.Client(token=token)

tracemalloc.start()

@interactions.slash_command(
    name="joinvc",
    description="starts the game"
)

async def joinvc(ctx: interactions.ComponentContext):
    await ctx.send("Joining vc. Please make sure you are currently in a vc!")
    vc = ctx.author.voice.channel
    await vc.connect()

@interactions.slash_command(
    name="press",
    description="Press the button"
)

async def press(ctx: interactions.ComponentContext):
    await ctx.send(f"{ctx.author.mention} has pressed the button")
    vc = ctx.author.voice.channel
    voice_client = await vc.connect()  # Connect to the voice channel

voice_client.play(discord.FFmpegPCMAudio(executable=r"C:\Users\myuser\OneDrive\Desktop\ffmpeg-6.1-essentials_build\bin", source=audiosource))


bot.start(token)