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• QML multimedia cannot play m3u8 that is generated with ffmpeg

  5 juin 2023, par LeXela-ED

  With the following command, I am trying to stream an IP camera over web :

  


  ffmpeg -re -i "rtsp://<user>:<password>@<ip>:<port>" -c:v copy -c:a copy -hls_segment_type mpegts -hls_list_size 5 -hls_wrap 5 -hls_time 2 -hls_flags split_by_time -segment_time_delta 1.00 -reset_timestamps 1 -hls_allow_cache 0 -movflags faststart live.m3u8```&#xA;</port></ip></password></user>

  


  This command, produces live.m3u8 and five ts files : live0.ts, live1.ts, live2.ts, live3.ts, and live4. And conversion goes smoothly. At some random point, the content of live.m3u8 is as follows :

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:2
#EXT-X-MEDIA-SEQUENCE:92
#EXTINF:2.000000,
live2.ts
#EXTINF:2.000000,
live3.ts
#EXTINF:2.035800,
live4.ts
#EXTINF:2.000000,
live0.ts
#EXTINF:1.963278,
live1.ts


  


  However, when I tried to play live.m3u8 with the following QML code, it only played a very first segments of it :

  


  import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15
import QtMultimedia 5.15

Window
{
    width: 640
    height: 480
    visible: true

    Item
    {
        anchors.fill: parent

        MediaPlayer
        {
            id: mediaplayer
            source: "path-to-live/live.m3u8"
            videoOutput: videoOutput
        }

        VideoOutput
        {
            id: videoOutput
            anchors.fill: parent
        }

        MouseArea
        {
            anchors.fill: parent
            onPressed: mediaplayer.play();
        }
    }
}



  


  The interesting thing is : I manually deleted live.m3u8, and obviously, ffmpeg generated another one after ! Then I clicked on the QML program window, and surprisingly, it played the stream nonstop as it was expected at the first run !

  


  What is the problem here ? What I am missing ? Should I change the ffmpeg command or do something with my qml code ? Any idea or help ?

  


  Thank you in advance.

  


• ffmpeg doesn't work, when starting up it doesn't play music, it gives errors

  14 août 2024, par Оля Михеева

  import discord
from discord import FFmpegPCMAudio
import os
import random
from gtts import gTTS
import asyncio

TOKEN="***"
VOICE_CHANNEL_ID=11122224444

class Voice_Bot(discord.Client):
    def __init__(self):
        intents = discord.Intents.default()
        intents.message_content = True
        intents.voice_states=True
        super().__init__(intents=intents)
        print(os.getcwd())
        self.sounds_hello = os.listdir(os.path.join('sounds','hello'))
        self.sounds_bye = os.listdir('sounds\\bye')
        self.sounds = os.listdir('sounds\\nature')

    async def on_ready(self):        
        self.voice_channel = self.get_channel(VOICE_CHANNEL_ID) 
        if self.voice_channel == None:
            print('Не удалось подключиться к голосовому каналу.')
            return
        self.voice_client = await self.voice_channel.connect()
        print('Бот подключен к голосовому каналу')
        await self.text_to_speech("Lets play Guess the Tune")
        
    async def on_message(self,message):
        if message.author==self.user:
            return
        if message.content.startswith("game"):
            await self.text_to_speech("let's start the game guess the melody")
            music=os.listdir("sounds\\music")
            self.melody=random.choice(music)
            await self.play_sound(f"sounds\\music\\{self.melody}")
        elif message.content==self.melody[0:len(self.melody)-4]:
            if (self.voice_client.is_playing()):
                self.voice_client.stop()
            await self.text_to_speech(f"Congratulations, {message.author.name} answered correctly! To continue, type game")
        else:
            if (self.voice_client.is_playing()):
                self.voice_client.stop()
            await self.text_to_speech(f"Unfortunately, {message.author.name} did not guess. To continue, write game")


    async def on_voice_state_update(self,member,before,after):
        if member.id ==self.user.id:
            print('Someone entered or left the voice channel.')
        else:
            try:
                if before.channel == None:
                    print(f'{member.name} entered the voice channel {after.channel}.')
                    await self.play_sound(f'sounds\\hello\\{random.choice(self.sounds_hello)}')
                elif after.channel == None:
                    print(f'{member.name} left the voice channel {before.channel}.')
                    await self.play_sound(f'sounds\\bye\\{random.choice(self.sounds_bye)}')
            except Exception as e:
                print(f"Error in on_voise_state_update: {e}")

    async def text_to_speech(self,text):
        try:
            tts = gTTS(text=text, lang ="en")
            tts.save("text.mp3")
        except Exception as e:
            print(f"Error e: {e}")
        await self.voice_channel.send(text)
        await self.play_sound("text.mp3")

    def play_sound(self,path):
        print(path)
        source=discord.FFmpegPCMAudio(source=path, executable="ffmpeg\\bin\\ffmpeg.exe")
        if (self.voice_client.is_playing()):
            self.voice_client.stop()
        self.voice_client.play(source)                

client = Voice_Bot()
client.run(TOKEN)


  


  [enter image description here](https://i.sstatic.net/ys8Xza0w.jpg)

  


• Pygame : Frame ghosting ?

  31 décembre 2013, par Sam Tubb

  I am working on a animation environment in python using pygame. The user draw's each frame, and then using ffmpeg the animation is saved as an .avi movie. I would like to implement a feature, but am not sure how.. frame ghosting. Like display the previous frame while you draw the current.

  I tried creating a surface called ghost that copies the current frame when the next-frame key is pressed. Then draws it with an alpha level of 10, but this didn't work out correctly.

  I am not sure what to do, here is the source code for anyone that thinks they have an idea :

  #Anim8
  
  
  
  import pygame,subprocess,shutil
  
  from os import makedirs
  
  from pygame.locals import *
  
  from random import randrange
  
  pygame.init()
  
  screen=pygame.display.set_mode((740,580))
  
  draw=pygame.Surface((740,540))
  
  draw.fill((200,200,200))
  
  bcol=(200,200,200)
  
  gui=pygame.Surface((740,40))
  
  gui.fill((50,50,50))
  
  size=2
  
  color=(0,0,0)
  
  screen.fill((200,200,200))
  
  prevcol=0
  
  newcol=0
  
  f=0
  
  msg=''
  
  framerate=60
  
  try:
  
      makedirs('anim')
  
  except:
  
      pass
  
  def DrawColors(x,y):
  
      pygame.draw.rect(gui, (255,0,0), (x+3,y+3,15,15),0)
  
      pygame.draw.rect(gui, (0,0,0), (x+3,y+21,15,15),0)
  
      pygame.draw.rect(gui, (0,255,0), (x+21,y+3,15,15),0)
  
      pygame.draw.rect(gui, (200,200,200), (x+21,y+21,15,15),0)
  
      pygame.draw.rect(gui, (0,0,255), (x+39,y+3,15,15),0)
  
  while True:
  
      pygame.display.set_caption('Anim8 - Sam Tubb - '+'Frame: '+str(f)+' '+str(msg))
  
      mse=pygame.mouse.get_pos()
  
      screen.blit(gui, (0,0))
  
      DrawColors(0,0)
  
      screen.blit(draw,(0,40))
  
      key=pygame.key.get_pressed()
  
      if key[K_1]:
  
          framerate=10
  
          msg='Frame Rate set to 10'
  
      if key[K_2]:
  
          framerate=20
  
          msg='Frame Rate set to 20'
  
      if key[K_3]:
  
          framerate=30
  
          msg='Frame Rate set to 30'
  
      if key[K_4]:
  
          framerate=40
  
          msg='Frame Rate set to 40'
  
      if key[K_5]:
  
          framerate=50
  
          msg='Frame Rate set to 50'
  
      if key[K_6]:
  
          framerate=60
  
          msg='Frame Rate set to 60'
  
      if key[K_7]:
  
          framerate=70
  
          msg='Frame Rate set to 70'
  
      if key[K_8]:
  
          framerate=80
  
          msg='Frame Rate set to 80'
  
      if key[K_9]:
  
          framerate=90
  
          msg='Frame Rate set to 90'
  
      if key[K_0]:
  
          framerate=100
  
          msg='Frame Rate set to 100'
  
  
  
      if key[K_a]:
  
          pygame.image.save(draw, 'anim/frame'+str(f)+'.png')
  
          f+=1
  
      for e in pygame.event.get():
  
          if e.type==QUIT:
  
              shutil.rmtree('anim')
  
              exit()
  
          if e.type==KEYDOWN:
  
              if e.key==K_s:
  
                  msg='Added Frame!'
  
                  pygame.image.save(draw, 'anim/frame'+str(f)+'.png')
  
                  f+=1
  
              if e.key==K_c:
  
                  draw.fill(bcol)
  
              if e.key==K_r:
  
                  name='anim'+str(randrange(0,999))+str(randrange(0,999))+'.avi'
  
                  msg='Rendering: '+name
  
                  pygame.display.set_caption('Anim8 - Sam Tubb - '+'Frame: '+str(f)+' '+str(msg))
  
                  subprocess.call('ffmpeg -f image2 -s 640x480 -i anim/frame%01d.png -r '+str(framerate)+' '+name,shell=True)
  
                  msg='Done!'
  
              if e.key==K_p:
  
                  subprocess.call('ffplay '+name,shell=True)
  
          if e.type==MOUSEBUTTONDOWN:
  
              if e.button==1:
  
                  try:
  
                      prevcol=color
  
                      newcol=gui.get_at(mse)
  
                      if newcol==(50,50,50):
  
                          newcol=prevcol
  
                      color=newcol
  
                  except:
  
                      pass
  
              if e.button==3:
  
                  try:
  
                      prevcol=bcol
  
                      newcol=gui.get_at(mse)
  
                      if newcol==(50,50,50):
  
                          newcol=prevcol
  
                      draw.fill(newcol)
  
                      bcol=newcol
  
                  except:
  
                      pass
  
              if e.button==4:
  
                  size+=1
  
                  if size>7:
  
                      size=7
  
              if e.button==5:
  
                  size-=1
  
                  if size==0:
  
                      size=1 
  
          if e.type == pygame.MOUSEMOTION:
  
              lineEnd = pygame.mouse.get_pos()
  
              lineEnd = (lineEnd[0],lineEnd[1]-40)
  
              if pygame.mouse.get_pressed() == (1, 0, 0):
  
                      pygame.draw.line(draw, color, lineStart, lineEnd, size)
  
              lineStart = lineEnd
  
  
  
      pygame.display.flip()

  Oh, and on another note, just if anyone was curious, here is what the output looks like.. I made a little new year's animation :