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• FFMPEG - moov atom not found after elaboration

  8 juillet 2019, par Pier Giorgio Misley

  I have a command where I put overlay images over a video.
  After that I resize the output to fit certain dimensions.

  Everything usually works fine, but sometimes and only from a certain desktop computer, when the second elaboration starts, the command returns an error : moov atom not found

  Lets put some code :

  My first command is pretty long, I past just the important stuff with a 2 pictures example :

  -i inputVideo.mp4 -i 1.jpg -i 2.jpg
  
  -filter_complex "[1:v]format=yuva422p,[Other effects...][im1];
  
  [2:v]format=yuva422p,[Other effects...][im2];
  
  [0][im1]overlay=(main_w-overlay_w)/2:(main_h - overlay_h)/2[o1];
  
  [o1][im2]overlay=(main_w-overlay_w)/2:(main_h - overlay_h)/2"
  
  -crf 18 -c:a copy output.mp4

  My second command is the following :

  -i output.mp4 -crf 19 resized.mp4

  I think I am missing something in my first command, but what ?
  If I execute the same exact code from my portable computer, it works fine.

  Thanks for the help !

  Here is the link for both log ffmpeg logs

  Last edit (I hope) :)

  I added in that github repository the ffmpeg command I tried and the source files to reproduce the problem. I hope anyone will ever find a solution

  In the repository there are :

  • LAST_CommandLine_Command -> it’s the ffmpeg command I am running
  • LAST_CommandLine_Command_Output -> it is one of my ffmpeg’s run output (it’s the last I’ve tried)
  • Files from 01.jpg to 10.jpg -> those are the pictures I’m overlaying over the video with the command
  • My input video for the ffmpeg command.

  I tried running this command with :
   A Windows console application that run it for me
   Directly from command line
   With a command line dotnet myapplication.dll (running my application not from debug but from publish)

  Results :

  It worked 1 times out of 10 for those specific files, in other cases it randomly stopped after some seconds (fron 45’’ to 1’55’’, depending on run).

  Note : I tried with -threads 1, -threads 2 and without any thread limitation. It failed in all cases

• how to get interval frames and key frames by ffmpeg with one command ?

  17 janvier 2023, par shsf

  I need to get the pictures of the video with one command.

  


  

  1. gets a frame by interval ;For example 0s 10s 20s 30s ... ;In order to generate sprites
sprite

  


  2. gets a keyframe at a fixed interval ; In order to show the video synopsis ;

  


  


  How to modify the following commands ?

  


  ffmpeg -y  -ss -5  -i   <input />  -vf  fps=fps=1/10  -s 480x270   p1/out-%04d.png -vf "select=&#x27;eq(pict_type,PICT_TYPE_I)&#x27;" -vsync vfr -s 480x270 -frame_pts true p2/out-%05d.png

  


• Encode & play video formats without 3rd party codec packs

  20 septembre 2013, par Jezza

  We have built a windows based software system that allows users to import their own video for viewing in the software. It works fine for AVI and WMV as we use a windows based player. For encoding or playing to work with most common video formats we have to ask our customers to download a 3rd party codec pack, such as K-Lite or Combined Community Codec Pack. Many of our customers are not allowed to do this due to IT Management rules.

  Are they are any suggestions regarding a player and encoder that can be built into our windows based software without needing 3rd party codec packs.

  I am not sure if ffmpeg, handbrake, VLC can be used for this purpose.

  Thanks. J