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• Gstreamer video increases latency with decresed FPS

  19 novembre 2024, par Ri Di

  I am using RPI 5 to stream the video :

  


  rpicam-vid -t 0 --camera 0 --nopreview --mode 2304:1296:10:P --codec yuv420 --width 640 --height 360 --framerate 10 --rotation 0 --autofocus-mode manual --inline --listen -o - | ffmpeg -f rawvideo -pix_fmt yuv420p -s:v 640x360 -r 10 -i /dev/stdin -c:v libx264 -preset ultrafast -tune zerolatency -maxrate 300k -bufsize 50k -g 30000 -f mpegts tcp://192.168.0.147:1234


  


  View it with :

  


  gst-launch-1.0 -v tcpserversrc host=0.0.0.0 port=1234 ! queue ! tsdemux ! h264parse ! avdec_h264 ! videorate ! video/x-raw,framerate=10/1 ! videoconvert ! autovideosink sync=false


  


  Problem is that with 10 FPS I get around 2s of latency ! While 56 or 120 FPS results in below 300ms latency.

  


  Is the problem in sender or reader side ? Or both ?

  


  I am not planning to use the 10 FPS, its only for demonstration of problem. But I would like to get lower latency at 56 FPS - just like at 120 FPS (around 80-100 ms difference) or maybe even better, as it seems to get lower with higher FPS.

  


  Maybe there is some kind of buffering parameter which holds frames ?

  


  (of course, when testing with higher FPS I change both numbers in sender and the one in reader command. The camera is v3 RPI official)

  


  Also I'd like to mention that same thing happens with ffplay :

  


  ffplay -i -probesize 3000 tcp://0.0.0.0:1234/?listen


  


• Gstreamer video increases latency with decreased FPS

  19 novembre 2024, par Ri Di

  I am using RPI 5 to stream the video :

  


  rpicam-vid -t 0 --camera 0 --nopreview --mode 2304:1296:10:P --codec yuv420 
           --width 640 --height 360 --framerate 10 --rotation 0 
           --autofocus-mode manual --inline --listen -o - | 
     ffmpeg -f rawvideo -pix_fmt yuv420p -s:v 640x360 -r 10 -i /dev/stdin 
            -c:v libx264 -preset ultrafast -tune zerolatency -maxrate 300k 
            -bufsize 50k -g 30000 -f mpegts tcp://192.168.0.147:1234


  


  View it with :

  


  gst-launch-1.0 -v tcpserversrc host=0.0.0.0 port=1234 ! queue ! 
    tsdemux ! h264parse ! avdec_h264 ! videorate ! video/x-raw,framerate=10/1 !  
    videoconvert ! autovideosink sync=false


  


  Problem is that with 10 FPS I get around 2s of latency ! While 56 or 120 FPS results in below 300ms latency.

  


  Is the problem in sender or reader side ? Or both ?

  


  I am not planning to use the 10 FPS, its only for demonstration of problem. But I would like to get lower latency at 56 FPS - just like at 120 FPS (around 80-100 ms difference) or maybe even better, as it seems to get lower with higher FPS.

  


  Maybe there is some kind of buffering parameter which holds frames ?

  


  (of course, when testing with higher FPS I change both numbers in sender and the one in reader command. The camera is v3 RPI official)

  


  Also I'd like to mention that same thing happens with ffplay :

  


  ffplay -i -probesize 3000 tcp://0.0.0.0:1234/?listen


  


• ffmpeg process 20564 successfully terminated with return code of 3436169992

  18 janvier, par Deeroy

  Trying to play a youtube video as audio through a discord bot. I ran into a 403 forbidden error and added the YDL_OPTIONS to bypass this. Now the code throws the error code 3436169992.The bot writes to the server "now playing : xxxx" but no audio is played. Any pointers ?

  


  FFMPEG_OPTIONS = {
    "before_options": "-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5",
    "options": "-vn -filter:a \"volume=0.25\""
}

# yt-dlp options
YDL_OPTIONS = {
    "format": "bestaudio[ext=webm][acodec=opus]/bestaudio",
    "noplaylist": True,
    "quiet": True,
    "extract_flat": False,
    "no_warnings": True,
    "source_address": "0.0.0.0"  # Prevents YouTube throttling
}

voice_clients = {}

@bot.event
async def on_message(message):
    if message.content.startswith("-play"):
        try:
            # Ensure the user is in a voice channel
            if not message.author.voice:
                await message.channel.send("You need to be in a voice channel to use this command.")
                return

            # Connect to the user's voice channel if not already connected
            if message.guild.id not in voice_clients or not voice_clients[message.guild.id].is_connected():
                voice_client = await message.author.voice.channel.connect()
                voice_clients[message.guild.id] = voice_client
            else:
                voice_client = voice_clients[message.guild.id]

            # Extract the YouTube URL from the command
            url = message.content.split()[1]

            # Download and extract audio using yt-dlp
            with YoutubeDL(YDL_OPTIONS) as ydl:
                info = ydl.extract_info(url, download=False)
                audio_url = info["url"]
                title = info.get("title", "Unknown Title")

            # Debug: Print the extracted audio URL
            print(f"Audio URL: {audio_url}")

            # Play the audio using FFmpeg
            source = FFmpegPCMAudio(audio_url, **FFMPEG_OPTIONS)
            voice_client.play(source, after=lambda e: print("Playback finished."))

            # Notify the user
            await message.channel.send(f"Now playing: {title}")

        except Exception as e:
            print(f"Error: {e}")
            await message.channel.send("An error occurred while trying to play the audio.")