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• How can I combine HDR video with a still PNG in FFMPEG without messing up colors ?

  2 juin 2022, par Robert

  I'm trying to add a still image to the end of a video as a title-card. Normally this is simple, but the video is HDR (shot on an iPhone) and for reasons I don't understand that's causing the colors in the PNG to go nuts.

  


  Here's the original png :


  


  Here's a screenshot from the end of the output video :


  


  Clearly something is amiss. I made the PNG image in Photoshop from a photo, and I've tried it with and without embedding the color profile without any noticeable difference.

  


  Here's the command for ffmpeg :

  


  ffmpeg -y\
 -t 5 -i '../inputs/video.MOV'\
 -loop 1 -t 5 -i '../../common/end-youtube.png'\
 -filter_complex '
[1:v] fade=type=in:duration=1:alpha=1, setpts=PTS-STARTPTS+5/TB[end];
[0:v][end] overlay [outV]
'\
 -map [outV] '../test.mp4'


  


  I've tried this with non-HDR videos and the colors look perfectly normal, so clearly the HDRness is somehow involved. I've also tried adding this line to set the colorspace etc of the output. It helps with the PNG (although it's not perfect) but then the video is washed out.

  


   -colorspace bt709 -color_trc bt709 -color_primaries bt709 -color_range mpeg \


  


  I don't really care if the output video is HDR or not, as long as the video and png parts both look visually close to the inputs. This is something I'll need to do to many videos, so if possible a solution that doesn't involve tweaking colors for each one would be ideal.

  


• Adobe Air , NativeProcess and ffmpeg

  18 août 2013, par Tom Lecoz

  First of all, please excuse me if my english is not perfect, I hope you could understand me...

  I discover yesterday this video tutorial about Air Native Process and FFMPEG, it shows how to create an Air app that can read every video format (avi, mkv, ...).

  http://www.youtube.com/watch?v=6N7eN9wvAGQ

  I tryed to reproduce it but obviously it didn't work...

  Then I looked for an example of it, with working source code, on the internet. I found this

  http://suzhiyam.wordpress.com/2011/05/05/as3ffmpeg-play-multi-video-formats-in-air/

  The author said it's a document class for a Flash project, it just need a button component, a text area and a video Object.

  I tryed it inside a Flash project, it didn't work...
  So, I made some adjusment to run it outside Flash (I just replaced the DisplayObject on the stage by ActionScript code), just because it easier if you want to test it.

  When I say "it didn't work", I mean my video is not read at all. The nativeProcess is working, my executable is recognize but I always get some ProgressEvent.STANDARD_ERROR_DATA and then the process stop...

  I'm working on Windows 7 64 bit.
  I tryed with FFMPEG 32 & 64 bit and get the exact same (no) result.

  You can find my code here
  pastebin.com/U3xRUKWe

  Can someone help me ?

  Please ! :)

  Thanks by advance !

  Tom

• FFMPEG - Overlay multipe videos over video at specified interval of time

  17 août 2020, par ND1010_

  I want to overlay multiple videos over a single video at specified interval of time.

  



  have tried with different solution but it will not work as i aspect

  



  i am use below command to overlay video over video

  



  String[] cmdWorking3 = new String[]{"-i",yourRealPath,"-i",gifVideoFile1,"-i",gifVideoFile2,"-i",gifVideoFile3,
                "-filter_complex",
                "[0][1]overlay=100:100:enable='between(t,0,2)'[v1];" +
                        "[v1][2]overlay=130:130:enable='between(t,0,2)'[v2];" +
                        "[v2][3]overlay=150:150:enable='between(t,5,6)'[v3];",
                "-map","[v3]","-map" ,"0:a",
                "-preset", "ultrafast", filePath};


  



  by using above command first two video completely works fine but last one will not enable

  



  Edit :

  



  //Working perfect

  



   String[] cmdWorking11 = new String[]
                {"-i",
                        yourRealPath,
                        "-i",
                        gifVideoFile1,
                        "-i",
                        gifVideoFile2,
                        "-i",
                        gifVideoFile3,
                        "-i",
                        gifVideoFile4,

                        "-filter_complex",

                        "[1]setpts=PTS+3/TB[1d];" +
                        "[2]setpts=PTS+7/TB[2d];" +
                        "[3]setpts=PTS+10/TB[3d];" +

                        "[0][1]overlay=100:100:enable='between(t,0,2)'[v1];" +
                        "[v1][1d]overlay=130:130:enable='between(t,3,6)'[v2];" +
                        "[v2][2d]overlay=130:130:enable='between(t,7,9)'[v3];" +
                        "[v3][3d]overlay=150:150:enable='between(t,10,13)'[v4];" +

                        "[1]asetpts=PTS+3/TB[1ad];" +
                        "[2]asetpts=PTS+7/TB[2ad];" +
                        "[3]asetpts=PTS+10/TB[3ad];" +
                        "[0:a][1ad][2ad][3ad]amix=4[a]",

                        "-map", "[v4]", "-map", "[a]", "-ac", "5",

                        "-preset",
                        "ultrafast",

                        filePath};


  



  Above command is perfectly works fine but audio from the overlapped video is gone,can you please help me to solve this issue.

  



  main Video time Duration is about 00:15 second and all overlay videos are about 3 second.

  



  it would be great to helping out to solve this issue,Thanks in advance.