Telegram video call with USB webcam stream (pytgcalls)

Question

I'm trying to send the stream of a usb webcam with pytgcalls on Telegram. In the documentation there is nothing about that, but there are several example of streaming youtube video or local mp4 files. I have found this example of streaming a youtube video and I think that streaming a usb webcam is quite similar. First of all, importing modules:

import asyncio
from pyrogram import Client

from pytgcalls import idle
from pytgcalls import PyTgCalls
from pytgcalls import StreamType
from pytgcalls.types.input_stream import AudioImagePiped, AudioVideoPiped
from pytgcalls.types.input_stream.quality import HighQualityVideo, HighQualityAudio, LowQualityAudio, LowQualityVideo

Now, start pyrogram and pytgcalls clients:

app = Client('py-tgcalls', api_id=API_ID, api_hash=API_HASH)

call_py = PyTgCalls(app)
call_py.start()

Declare the function that will convert the youtube link to a stream:

def get_youtube_stream():
    async def run_async():
        proc = await asyncio.create_subprocess_exec(
            'youtube-dl',
            '-g',
            '-f',
            'best[height<=?720][width<=?1280]',
            # Some random YT link
            'https://www.youtube.com/watch?v=AAAAAAA',
            stdout=asyncio.subprocess.PIPE,
            stderr=asyncio.subprocess.PIPE,
        )
        stdout, stderr = await proc.communicate()
        return stdout.decode().split('\n')[0]
    return asyncio.get_event_loop().run_until_complete(run_async())

Declare the function for sending the stream via telegram, in a group:

def youtube():
    remote = get_youtube_stream()
    call_py.join_group_call(
        # Group ID
        -10011111111,
        AudioVideoPiped(
            remote,
            HighQualityAudio(),
            HighQualityVideo(),
        ),
        stream_type=StreamType().pulse_stream,
    )

Now the function youtube() can be executed:

youtube()

Using idle() for blocking the script:

idle()

This is the script, can somebody help me in streaming the live of a usb webcam?

Answer 1

Recently by pytgcalls (0.9.0) was added the possibility to stream from an upd stream, you can use directly ffmpeg to capture the media device and make local UDP streaming