Sur d’autres sites (7315)

• Icecast to Youtube Live w/ Track Meta data

  22 novembre 2018, par eusid

  I am using ffmpeg to stream a still image along with my Icecast stream to youtube. I would like to give the artists credit by displaying their names on the image or perhaps even using a visualizer type thing.

  I am curious how people have solved this issue to get the meta data on the image, or even use a visualizer in the past. I want to do this headlessly from my server so I don’t have to run OBS or something on my desktop. I would hope to not have to reinvent the wheel, but if you could point me in the right direction I’ll build the wheel if asking for a completed wheel gets me down votes.

  How is this typically solved ? Mainly getting the text on the image and the stream updating with the new image. I could write something with pillow to do this perhaps. Not sure if it would work.

• youtube-dl download one minute per every 5 minutes (on a twitch video, but i have the local file saved too if easier)

  18 mai 2016, par babadoctor

  I would like to do what the title says

  This is a ffmpeg command to download from a specific time in a video, offline or online.

  ffmpeg -ss (stop time) -i (direct video link) -t (start time) -c:v copy -c:a copy (title.mp4)

  I am going to be downloading this on OSX.
  I dont care what the title is.

  I think* there is a bash command that allows me to change the timings in this command up by a specific amount (+300 seconds per, the counter for start and stop time is in raw seconds)

  So, bash script that runs that command but increases the start and stop times incrementally by 300 (the stop timing being 60+ seconds ahead), downloads, then repeats.

• Piping pi's opencv video to ffmpeg for Youtube streaming

  14 avril 2021, par Mango Plaster

  This is a small python3 script reading off picam using OpenCV :

  



  #picamStream.py

import sys, os
from picamera.array import PiRGBArray
from picamera import PiCamera
import time
import cv2

# initialize the camera and grab a reference to the raw camera capture
camera = PiCamera()
camera.resolution = (960, 540)
camera.framerate = 30
rawCapture = PiRGBArray(camera, size=(960, 540))

# allow the camera to warmup
time.sleep(0.1)

# capture frames from the camera
for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):

    image = frame.array

    # ---------------------------------
    # .
    # Opencv image processing goes here
    # .
    # ---------------------------------

    os.write(1, image.tostring())

    # clear the stream in preparation for the next frame
    rawCapture.truncate(0)

# end


  



  And I am trying to pipe it to ffmpeg to Youtube stream

  



  My understanding is that I need to reference below two commands to somehow come up with a new ffmpeg command.

  



  Piping picam live video to ffmpeg for Youtube streaming.

  



  raspivid -o - -t 0 -vf -hf -w 960 -h 540 -fps 25 -b 1000000 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp ://a.rtmp.youtube.com/live2/[STREAMKEY]

  



  Piping OPENCV raw video to ffmpeg for mp4 file.

  



  python3 picamStream.py | ffmpeg -f rawvideo -pixel_format bgr24 -video_size 960x540 -framerate 30 -i - foo.mp4

  



  So far I've had no luck. Can anyone help me with this ?