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• Error while saving RTSP to .mp4 from a Hikvision using cvlc, openRTSP or ffmpeg

  4 octobre 2020, par Rui Martins

  I'm trying to save an RTSP streaming from a hikvion camera to a .mp4 file in a USB pen drive in a raspberry pi 3.

  


  I'm using raspbian, I read a lot from the internet, and I'm using different programs to try to save the video.

  


  I used cvlc, openRTSP and ffmpeg, and all of them have errors...

  


  Some commands that I used :

  


  openRTSP -D 1 -c -B 10000000 -b 10000000 -4 -Q -F video_openRTSP_ -P 1200 -w 1920 -h 1080 -f 25 -t -u admin xxxxx rtsp://admin:xxxxx@192.168.1.64:554/h264/ch1/main/av_stream


  


  ffmpeg -i rtsp://admin:xxxxx@192.168.1.64:554/h264/ch1/main/av_stream -acodec copy -vcodec copy ffmpeg.mp4


  


  cvlc --rtsp-tcp rtsp://admin:xxxxx@192.168.1.64:554/h264/ch1/main/av_stream --sout=file/mp4:cvlc.mp4 --stop-time=900 vlc://quit


  


  I tried a lot of different parameters for each one of these 3 programs... The final result never was good. I guess the Hikvision firmware is not implementing well the RTSP protocol...

  


  Exists some alternative firmware for Hikvision cameras ? As we have openWRT and ddWRT for routers ?

  


  Someone had the same problem as me ?

  


  (I want to store at least 15 minutes, even when the .mp4 file is saved, sometimes only save few seconds of videos, and sometimes I can't reproduce the video)

  


  Pictures of the errors :

  


  openRTSP :

  


  

  


  

  


  ffmpeg :

  


  

  


  

  


• FFmpeg is giving me nightmares

  8 juin 2016, par Guillermo

  So, I’m trying to save animations with the animation.save command. I installed ffmpeg in Windows 10 by placing a folder with its binaries in my drive C :\, I have also set the path in my system variables like C :\ffmpeg\bin, and finally, my code for the animation function saving looks like this

   if save=='True':
  
       mywriter = animation.FFMpegWriter()
  
       plt.rcParams['animation.ffmpeg_path'] = 'C:/ffmpeg/bin' 
  
       ani.save('mymovie.avi',writer=mywriter,fps=30)

  and all other kind of variants such as :

      mpl.animation.ffmpeg_path = r'C:\ffmpeg\bin' 
  
      mpl.animation.ffmpeg_path = 'C:\\ffmpeg\\bin' 

  No matter what I do, the result is always :

  File "<stdin>", line 2, in <module>
  
  File "Plot.py", line 168, in animate
  
  ani.save('mymovie.avi',writer=mywriter,fps=30)
  
  File "c:\users\guillermo\appdata\local\enthought\canopy\user\lib\site-packages\matplotlib\animation.py", line 801, in save
  
  with writer.saving(self._fig, filename, dpi):
  
  File "C:\Users\Guillermo\AppData\Local\Enthought\Canopy\App\appdata\canopy-1.6.1.3253.win-x86_64\lib\contextlib.py", line 17, in __enter__
  
  return self.gen.next()
  
  File "c:\users\guillermo\appdata\local\enthought\canopy\user\lib\site-packages\matplotlib\animation.py", line 194, in saving
  
  self.setup(*args)
  
  File "c:\users\guillermo\appdata\local\enthought\canopy\user\lib\site-packages\matplotlib\animation.py", line 184, in setup
  
  self._run()
  
  File "c:\users\guillermo\appdata\local\enthought\canopy\user\lib\site-packages\matplotlib\animation.py", line 212, in _run
  
  creationflags=subprocess_creation_flags)
  
  File "C:\Users\Guillermo\AppData\Local\Enthought\Canopy\App\appdata\canopy-1.6.1.3253.win-x86_64\lib\subprocess.py", line 710, in __init__
  
  errread, errwrite)
  
  File "C:\Users\Guillermo\AppData\Local\Enthought\Canopy\App\appdata\canopy-1.6.1.3253.win-x86_64\lib\subprocess.py", line 958, in _execute_child
  
  startupinfo)
  
  WindowsError: [Error 5] Access Denied
  
  </module></stdin>

  Any ideas ? :D

  ------------------------------------------------------------------------------

  EDIT : I will reference this answer as it is the one that helped me the best :
  http://stackoverflow.com/a/27017734/6050676

  It worked perfectly when using :

  plt.rcParams['animation.ffmpeg_path'] = 'C:\\ffmpeg\\bin\\ffmpeg.exe'  

• How to capture desktop using ffmpeg ? getting error when stop recording : System.InvalidOperationException : 'StandardIn has not been redirected.'

  4 octobre 2023, par SharonHemed

  I want it to record the entire desktop then when stopping to save the file to the hard drive. and to hide without the console window of the ffmpeg.

  


  but getting this exception error. and i'm setting the RedirectStandardInput to true.
so i'm not sure why it's showing this error.

  


  The exception error is on the line

  


  process.StandardInput.BaseStream.Write(qKey, 0, 1);


  


  The full code

  


  using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using NAudio.CoreAudioApi;
using NAudio.Wave;

namespace Desktop_Recorder
{
    public partial class Form1 : Form
    {
        Process process;

        public Form1()
        {
            InitializeComponent();

            process = new Process();
            Start(@"d:\test.mp4", 30);
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            Stop();
        }

        public void Start(string FileName, int Framerate)
        {
            process.StartInfo.FileName = @"d:\ffmpeg\ffmpeg.exe"; // Change the directory where ffmpeg.exe is.  
            process.EnableRaisingEvents = false;
            process.StartInfo.WorkingDirectory = @"D:\"; // The output directory  
            process.StartInfo.Arguments = @"-y -f gdigrab -framerate " + Framerate +
                " -i desktop -preset ultrafast -pix_fmt yuv420p " + FileName;
            process.StartInfo.UseShellExecute = false;
            process.StartInfo.CreateNoWindow = false;
            process.StartInfo.RedirectStandardInput = true; //Redirect stdin
            process.StartInfo.RedirectStandardError = true;
            process.Start();
            System.Threading.Thread.Sleep(3000);  //Wait 3 seconds (for testing).
            Stop();
        }

        public void Stop()
        {
            byte[] qKey = Encoding.GetEncoding("gbk").GetBytes("q"); //Get encoding of 'q' key
            process.StandardInput.BaseStream.Write(qKey, 0, 1); //Write 'q' key to stdin of FFmpeg sub-processs
            process.StandardInput.BaseStream.Flush(); //Flush stdin (just in case).
            process.Close();
        }


        private void btnStartRecording_Click(object sender, EventArgs e)
        {

        }
    }
}