telebot_webm_to_mp4.py

# from moviepy.editor import *
# import telebot
# import threading
# ...receive message with link to .webm...


def convert_webm_to_mp4(message, m):
    video = VideoFileClip(m.group(0))
    converting = bot.reply_to(message, '<i>Конвертирую...</i>', parse_mode='HTML')
    bot.send_chat_action(message.chat.id, 'upload_video')
    filename = "{}.mp4".format(str(message.chat.id)[1:] + '_' + str(message.message_id))
    video.write_videofile(filename, fps=25, preset='ultrafast')
    openedfile = open(filename, 'rb')
    bot.send_video(message.chat.id, openedfile, reply_to_message_id=message.message_id)
    bot.delete_message(message.chat.id, converting.message_id)
    openedfile.close()
    os.remove(filename)


def webm_to_mp4(message):
    if message.entities is not None:
        for entity in message.entities:
            if entity.type == 'url':
                m = re.search('https://2ch\.(?:hk|pm)/[a-z]*/src/[0-9]*/[0-9]*\.webm',
                              message.text[entity.offset:entity.offset + entity.length])
                if m:
                    t = threading.Thread(
                        name="{}.webm".format(str(message.chat.id)[1:] + '_' + str(message.message_id)),
                        target=convert_webm_to_mp4,
                        args=(message, m,))
                    t.setDaemon(True)
                    t.start()