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• ffmpeg created video receiving error message on Youtube

  1er février 2023, par David Ruan

  I am using this command to generate a video with a cover page and an audio.

  


  ffmpeg -loop 1 -r 1 -i c :/temp/coverImage.jpeg -i C :/temp/out/input.mp3 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -c:a copy -shortest -c:v libx264 C :/temp/VideoOut/output.mp4

  


  But the generated video got an error message from Youtube after it is uploaded.

  


  "Your video has an unsupported aspect ratio"

  


  Any idea how to solve this issue ?

  


• PiCamera stream to youtube with ffmpeg and capture image every second

  9 octobre 2020, par MisterGray

  I'm sending a livestream with a Python script on a Raspberry Pi 4 to Youtube with ffmpeg.

  


  Additionally I want to check the stream for movements. Therefore I want to compare two frames with each other. Since this is relatively computationally intensive, I wanted to limit myself to "only" compare single frames every second.

  


  The camera.capture() command, however, seems to take very long, so the stream hangs again and again.

  


  What is the best way to get a raw frame during the stream ?

  


  Is there a better alternative to detect movements while creating a stream with ffmpeg ?

  


  #!/usr/bin/env python3
import subprocess
from picamera.array import PiRGBArray
from picamera import PiCamera
import time
import cv2
import numpy as np

YOUTUBE = 'rtmp://a.rtmp.youtube.com/live2/'
KEY = 'MyYoutubeKey'
stream_cmd = '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 ' + YOUTUBE + KEY

avg = None
stream_pipe = subprocess.Popen(stream_cmd, shell=True, stdin=subprocess.PIPE)
resolution = (1280,720)
with PiCamera(resolution = resolution) as camera:

    rawCapture = PiRGBArray(camera, size = resolution)

    camera.framerate = 25
    camera.vflip = True
    camera.hflip = True
    camera.start_recording(stream_pipe.stdin, format='h264', bitrate = 6000000)
    while True:
        camera.wait_recording(1)

        # this command takes a long time to finish
        frame = camera.capture(stream_pipe.stdin, 'rgb')

        """
        further calculations
        """

        rawCapture.truncate(0)

    camera.stop_recording()
    stream_pipe.stdin.close()
    stream_pipe.wait()


  


• convert a normal video to youtube short

  28 mai 2022, par Un1xCr3w

  hello i have videos with width of 1920px and height of 1080 and i wanna crop it at the center and create a youtube short with it

  


  iam using youtube dl wrap node js library
here is my code example

  


  var ffmpeg = require("fluent-ffmpeg");
const fs = require("fs");
let rawdata = fs.readFileSync("./json-files/small.json");
let clips = JSON.parse(rawdata);

function convertIt(fileName) {
  return new Promise((resolve, reject) => {
    ffmpeg(`./media-new/${fileName}`)
      .size("480x640")
      .aspect("9:16")
      .autopad()
      .videoBitrate("4000k")
      .on("end", function () {
        console.log("file has been converted succesfully");
        resolve("foo");
      })
      .on("error", function (err) {
        console.log("an error happened: " + err.message);
        reject(err);
      })
      // save to file
      .save(`./lib/${fileName}`);
  });
}

async function convertToShorts() {
  for (const iterator of clips) {
    await convertIt(`${iterator.id}.mp4`);
  }
}

convertToShorts();