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• FFMPEG 2 Videos transcoded and side by side in 1 frame ?

  15 février 2021, par dcoffey3296

  I have 2 videos : HEADSHOT.MOV and SCREEN.MOV. They are both large files and I am looking to both shrink (size, bitrate, etc) and place these two side by side in the same, very wide, video frame. The end result would be that when you play the output_video.mp4, you would have a very wide frame with both videos in sync and playing at the same rate.

  



  Here is the syntatically incorrect version of what I am trying to do :

  



  ffmpeg -i HEADSHOT.MOV -t 00:02:00 -acodec libfaac -ab 64k -vcodec libx264 -r 30 -pass 1 -s 374x210 -vf "movie=SCREEN.MOV [small]; [in][small] -an -r 30 -pass 1 -s 374x210 overlay=10:10 -t 00:02:00 [out]" -threads 0 output_movie.mp4


  



  In the above example, I also tried to set a test movie duration for 2 minutes which raises another question, What is the best way to handle 2 movies of varying length (if they are close) ?

  



  The resources I have found helpful so far are :

  



  Multiple video sources combined into one and

  



  http://ffmpeg.org/ffmpeg.html#overlay-1

  



  Any help/advice is greatly appreciated. I am having trouble with the FFMPEG syntax ! Thank you !

  


• ffmpeg - How to convert a gif image to an mp4 and loop for 5 seconds

  23 octobre 2014, par Gary

  I have a program which will convert images to an mp4 movie that loops for 5 seconds. In most cases it does it without any issue except when the image is a gif file. I receive an invalid argument error on the "-loop 1" argument when the image is a gif.

  When I remove the "-loop 1" arg and add "ignore_loop 0" I get a movie that goes so fast you can’t see it when multiple movies are played in a playlist.

  The arguments in the program looks like this...

  -ignore_loop 0 -i "gifimage.gif" -vf "pad=width=400:height=300:x=0:y=0" -pix_fmt yuv420p -t 5 gifout.mp4

  if (imageFullName.Contains(".gif"))
  
              arguments.Append("-ignore_loop 0");
  
          else
  
              arguments.Append("-loop 1");
  
  
  
  arguments.Append(" -i \"" + i.FullName + "\"");
  
  arguments.Append(" -vf \"pad=width=" + outputWidth.ToString() + ":height=" + outputHeight.ToString() + ":x=" + padLeft.ToString() + ":y=" + padTop.ToString() + "\"");
  
  arguments.Append(" -pix_fmt yuv420p -t 5");
  
  arguments.Append(" " + outputFullName);

  As you can see I tell ffmpeg that the movie is to last 5 seconds but it doesn’t. Is there a way to convert a gif image to an mp4 and have it loop for 5 seconds ?

  Thanks,
  Gary

• Which command line and version do I need to reproduce those properties ?

  26 décembre 2015, par Zurechtweiser

  I have a file for which ffmpeg gave those properties :

  ...
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'TEST.MOV':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2015-12-26 07:45:26
  
    Duration: 00:00:02.75, start: 0.000000, bitrate: 4935 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc), 1280x720 [SAR 1:1 DAR 16:9], 4775 kb/s, 59.94 fps, 59.94 tbr, 180k tbn, 119.88 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-12-26 07:45:26
  
        handler_name    : Ambarella AVC
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 64 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-12-26 07:45:26
  
        handler_name    : Ambarella AAC

  Which command line and version do I need to reproduce those properties ?

  I tried

  ffmpeg -i "test.mp4" -s 1280x720 -vcodec libx264 -c:a libvo_aacenc -q:a 3 -r 59.94 -b:v 4935k -b:a 64k -ac 1 -ar 48000 TEST2.MOV

  But it’s not the same.

  Goal is simple : my actioncam has a hdmi-output. I want to watch movies next to my own footage using my actioncam when I am abroad. Goal is to make the actioncam think, it was it’s own footage to play it back. Currently I only get ’invalid’.