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• ffmpeg usb Web cam recording terminates randomly before set duration

  16 mars 2018, par pomptondrive

  The output of this script is just fine ; it’s pretty much what I want. But it seems to terminate randomly. My next step will be to try this on another computer to see if the issue persists.

  My configuration :
  Dell Precision laptop, m4400
  2x Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz
  Linux Mint 18.3 Sylvia
  Kernel : Linux 4.4.0-116-generic (x86_64)
  Card : NVIDIA G96GLM [Quadro FX 770M]
  ffmpeg version 2.8.11-0ubuntu0.16.04.1
  USB Camera-B4.09.24.1 Sony Playstation Eye

  And this is the script that I’m running - the last time it recorded for about three hours and forty-five minutes, before that it was about 55 minutes ; once it ran five and a half hours :

  #!/bin/bash  
  
  echo "This is a shell script to make a timelapse video."  
  
  ffmpeg \
  
  -f v4l2 -input_format yuyv422 -video_size 640x480 -framerate 5 -t 09:00:00 -i /dev/video0 \
  
  -vf "select=not(mod(n\,5)),setpts=N/(60*TB),fps=60, drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf:text='%{localtime\:%T}':x=20:y=20:fontcolor=white" \
  
  -c:v libx264 -preset superfast -crf 23 -pix_fmt yuv422p -g 15 -keyint_min 15 \
  
  -f mpegts /media/dkm/OneTB/Video/Timelapse_$(date +%Y-%m-%d_%H.%M.%S).ts

  Any suggestions would be appreciated. Thanks !

• Trying to stream H264 with Janus Gateway to web browser

  15 mars 2021, par sibrown

  I have installed Janus-Gateway using the very comprehensive install instructions on an Ubuntu 18.04LTS machine.
I have configured the streaming config file (janus.plugin.streaming.jcfg) with :

  



  gstreamer-sample: {
  type = "rtp"
  id = 1
  description = "H.264 live stream coming from gstreamer"
  audio = false
  video = true
  videoport = 5004
  videopt = 96
  videortpmap = "H264/90000"
  videofmtp = "profile-level-id=42e01f;packetization-mode=1"
}


  



  (I didn't change the name because that required least changes to other files.)

  



  Having then started the server, I then take a pre-encoded stream and send that to the server with ffmpeg :

  



  ffmpeg -i udp://127.0.0.1:9034 -c:v copy -an -f rtp rtp://127.0.0.1:5004?pkt_size=1300


  



  Opening up the demo webpage the server comes with, I go to streaming demos, and choose the "gstreamer" demo and click start. The right hand half of the screen produces a spinning circle, but tells me that it is receiving data at the appropriate rate for the stream I'm sending. So if it's receiving the stream, why isn't it playing it ?

  



  Cheers,
Simon

  


• ffmpeg player in discord.py (python) automatically leave

  25 octobre 2018, par Rastasplif

  I have created a discord bot that on certain messages either sends back a message or plays a sound (like a soundboard)

  The crucial line of code is :

           soundboard_player = voice_client.create_ffmpeg_player("doh.mp3")
  
           soundboard_player.start()
  
           await client.send_message(message.channel, "Playing DOH...")

  This works absolutely fine but i kept trying to add the line
  after=voice_client.disconnect()
  I put this inside the ("doh.mp3", * I PUT IT HERE *) brackets.
  I wanted the bot to leave after it was done.

  When I run the code with the ’after’ statement included, the bot joins and I get the error message :

  TypeError: disconnect() takes 1 positional argument but 2 were given

  I know you can use soundboard_player.is_done() to check the status of the bot but I couldn’t figure out a way to check the status without trapping the code in a loop

  By trapping the code in the loop I cant execute a STOP command to stop it playing the song (soundbite) half way through.

  Any help with the after=voice_client.disconnect() command for the ffmpeg player
  or a creative way to periodically check the status without getting trapped in the loop ?