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• How to make a bot available to multiple users on blocking operations ? python, aiogram, pytube, ffmpeg

  27 février 2023, par Tony Reznik

  I'm trying to deal with multithreading and asynchrony, but I can't figure out how to deal with this situation.

  


  There is a telegram bot that downloads videos from YouTube and cuts only the first minute of the video into a separate file. Pytube and ffmpeg are used. The second bot user does not receive any response from the bot while the tasks of the first one are running. How to deal with such difficulties ?

  


  import subprocess

from aiogram import Bot, Dispatcher, types
from aiogram.utils import executor
from pytube import YouTube
import time

API_TOKEN = 'tkn'

bot = Bot(token=API_TOKEN)
dp = Dispatcher(bot)

video_folder = 'video/'


@dp.message_handler()
async def start_convert(message: types.Message):
    url = message.text
    yt = YouTube(url)

    await message.reply('accepted')

    video_name = time.strftime("%d-%m-%Y-%H-%M-%S") + '.mp4'

    video = yt.streams.get_highest_resolution()
    video.download(video_folder, filename=video_name)

    await message.reply('downloaded')

    subprocess.call(['ffmpeg', '-hide_banner', '-loglevel', 'error', '-i', f'{video_folder}{video_name}',
                     '-ss', '0', '-c:v', 'libx264', '-c:a', 'aac', '-b:v', '5M', '-to', '60',
                     f'{video_folder}1_min_{video_name}'])

    await message.reply('trimmed')

if __name__ == '__main__':
    executor.start_polling(dp, skip_updates=True)



  


  This is a code template.
In the current form, I want to understand how to implement the task correctly.

  


• How do I stream remote multiple webcams to multiple users

  29 juin 2016, par Joe Hill

  I need to capture multiple users’ webcams in the browser and then broadcast it to multiple users. This must include an audio and video stream with low and high quality options. Ideally, I would not like to use flash but having flash as a fallback is totally fine.

  When the webcam is broadcast to the users, this must work on as many platforms as possible.

• Consume RTSP stream from users browser without converting on the server

  19 août 2018, par Kazanz

  I have thousands of IP cameras that need to be displayed to various users that are all outputing RTSP streams. Right now I have a server that uses ffpmeg to convert the stream to mpeg video that is then consumed and served over websockets via a node app.

  My problem is that these two processes take up a ridiculous amount of memory. About a half a GB for each camera.

  Is there any way to offload the conversion and reading of the stream to the client’s machine in their browser, or potentially out of it ?