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• Overlay a video and an image over a background video and shift that background video's position to the right

  4 août 2023, par sybr

  I'm currently working on a way to improve my production process for the videos that I'm making. I usually edit videos using two folders full of clips. Being able to automate putting these together in Premiere would save me a lot of time.

  


  I'm using the FFMpegCORE C# library, as well as Xabe.FFMpeg to achieve what I'm trying to do, and I've currently reached the point of creating two separate videos using the clips I mentioned earlier.

  


  The final step that I need to solve is to overlay the overlay video (overlay.mp4) over the background video (background.mp4), add an overlay image to add a clean divider (overlay.png) between the edges of the videos, and to somehow shift the position of the background video 33% to the right (background.mp4).

  


  This is the script I've come up with so far :

  


  ffmpeg -i overlay.mp4 -i background.mp4 -i overlay.png -filter_complex \ 
"[1:v]scale=608:1080[a]; [0:v]pad=1920:1080[b]; [b][a]overlay[out]; \
[out][2:v]overlay[out]; [0][1]amix[a];" \
-map [out] -map [a] -c:v libx264 -crf 30 -pix_fmt yuv420p -y output.mp4


  


  Is there a way to shift the background video to the right ? Or should I manually edit the video files ?

  


  Would love some help here, also eager to learn more about FFmpeg, so some explanation would be highly appreciated !

  


  Edit :

  


  Just found the solution, padding the background video for 33% and then cropping the final out back to 1920x1080 seemed to do the trick !

  


  ffmpeg -i overlay.mp4 -i background.mp4 -i overlay.png -filter_complex "[1:v]scale=608:1080[a]; [0:v]pad=2560:0:x=1920:y=1080[b]; [b][a]overlay[out]; [out][2:v]overlay[out]; [out]crop=1920:1080:0:0[out]; [0][1]amix[a];" -map [out] -map [a] -c:v libx264 -crf 30 -pix_fmt yuv420p -y output.mp4


  


• merge multiple ffmpeg commands into one line to make the whole process faster

  8 septembre 2020, par user1hjgjhgjhggjhg

  I want to merge multiple commands into one so that whole processing time would be fastest. What I am doing so far is

  


  


  1. A video file is uploaded from a webform and and server upload into a temp directory.

     


      if (move_uploaded_file($_FILES[$param]['tmp_name'], $filePath)) {


       return $filePath;
     }


     


  


  2. add black borders around the video(through ffmpeg command) - video uploads again to a directory

     


     $command_new = "ffmpeg -i $filePath -vf 'scale=720:1280:force_original_aspect_ratio=decrease,pad=720:1280:(ow-iw)/2:(oh-ih)/2,setsar=1' $video_file";
    exec($command_new);


     


  


  3. optimizing the video(ffmpeg command) - video uploads again to a directory

     


       $cmd_new = "ffmpeg -i $video_file -c:v libx264 -crf 28 $optimizeResultFile";


     


  


  4. merging the uploaded file with the existing video file present in the database into one and uploading that file into directory(through ffmpeg command)

     


            $command_new = "ffmpeg -i $optimizeResultFile   -i $second_video_path   -filter_complex '[0:v]pad=iw*2:ih[int];[int][1:v]overlay=W/2:0[vid]'   -map [vid]   -c:v libx264   -crf 23   -preset veryfast $videomerge";


     


  


  5. //add custom sound in that final merged video

     


            $cmd_new = "ffmpeg -i $videomerge -i $audio -c:v copy -c:a aac -shortest -map 0:v:0 -map 1:a:0 $with_new_audio";


     


  


  


  Is it possible to do all at one command and not in multiple commands. This process takes 1 min to upload a final file. want to make it faster

  


• Révision 19837 : Correction et amélioration dans l’importation d’une sauvegarde :

  24 août 2012, par esj@rezo.net

  le test final de nécessité de reconnexion était faux, le résultat de auth_retrouve_login n’étant pas un tableau ; corrigé, ce test apparaît peu utile car l’étape finale étant provoquée par une redirection, il y a eu à l’entrée une vérification du cookie qui a provoqué un renouvellement de session qui a (...)