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• ffplay : is there a way to get the timestamp of the currently paused video frame ?

  17 septembre 2022, par John_Sheares

  Currently, I have ffplay setup to draw the timestamp as overlay text, so that I can manually record the value of the paused frame. This getting tedious and I was thinking of extracting it with a custom program that monitors stdout.

  


  I noticed that when I turn on the log output, I can see the debug information for the text formatting of the drawn timestamp. When paused, I can read back several lines to see the timestamp that matches the one shown in the overlay text. It seems consistently 4 formatting debug messages back, but that is probably unreliable.

  


  Any ideas on how this can be done and reliably ?

  


•  : and - characters not showing when applying drawtext

  6 mars 2019, par SPYBUG96

  I am trying to get the characters ’-’ and ’ :’ to show up when I draw text on an image so I can have the date and time show up properly formatted. When I run the python code and all that to set up the text it is exactly how I want it, I printed it to the screen. When the command is run though, the date and time don’t show, at least when I try drawing this : 2018-12-12 T03:20:40 What shows up on the image is 12 T

  This is an example of the ’ :’ and ’-’ characters having a problem

  ffmpeg -y -i TifImageLoc -vf vflip,drawtext=fontfile=C:WINDOWS\Fonts\sserife.fon:fontsize=200:fontcolor=white:x=(w-text_w)/2:y=(h-texth-texth)/2:text="Hello\-\ \:World" -frranes:v 1 output1.tif

  When this is run I want the result of Hello- :World to be drawn on the image, but the actual result is Hello perfectly centered on the picture

  How do you draw the ’-’ and ’ :’ to an image using FFmpeg so that a date in this 2018-12-12 T03:20:40 format can be on the image ?

• How can i cut a video from a specific timeline and save the cut area using ffmpeg ?

  17 novembre 2015, par Sharondohp Sharonas

  I have a Mov file i also have the file in Avi after converted it to Avi.
  What i want to do is to cut a part of the file from minute 1:10 until 1:50

  What i tried so far :

  using System;
  
  using System.Collections.Generic;
  
  using System.ComponentModel;
  
  using System.Data;
  
  using System.Drawing;
  
  using System.Linq;
  
  using System.Text;
  
  using System.Threading.Tasks;
  
  using System.Windows.Forms;
  
  using System.Diagnostics;
  
  
  
  namespace CutVideos
  
  {
  
      public partial class Form1 : Form
  
      {
  
          // 1:10 to 1:50
  
  
  
          public Form1()
  
          {
  
              InitializeComponent();
  
  
  
              Process.Start("ffmpeg.exe",
  
                "-sameq -t 10 -i E:\\New folder (29)\\MVI_7747.avi E:\\New folder (29)\\10seconds.avi");
  
          }
  
  
  
          private void Form1_Load(object sender, EventArgs e)
  
          {
  
  
  
          }
  
      }
  
  }

  First i tried to mov file then the avi in both cases it didn’t create the output file.
  For testing i did that it will cut only the first 10 seconds of the movie file. But it’s not working. Later i want to cut and save the part from minute 1:10 to 1:50

  I noticed that there is an error i think with the ffmpeg when running the program but i couldn’t see it since the console window is closing too fast.