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• how do I apply watermark on multiple videos in the current directory with ffmpeg

  22 octobre 2017, par Ariane Martins Gomes Do Rego

  Linux + ffmpeg

  I have a folder with 300 videos. I need to apply the same watermark on all these videos, so in the folder I have 300 video files + 1 png file which is my watermark, how do I do this without the system asking to overwrite the files ? how to generate a different name for each output file ? that is at least video1.mp4 video2.mp4 etc...

   ffmpeg -i video.mp4 -i watermark.png -filter_complex 'overlay=10:10' output.mp4

  I found something like that.

  It works without errors, but asks if I want to replace the previous video with the next video to be tagged :

  #!/bin/bash
  
  for f in *.mp4; do ffmpeg -i "$f" -i watermark.png -filter_complex 'overlay=10:10' -strict -2 "$~nf-360p.mp4"; done

  How do I generate a command that has the flag that in each mp4 file processed to apply the watermark of the current directory, gets a different name so that the output files were not overwritten ?

  Thanks.

• Creating an FFMPEG command for setting all videos to the same size and adding an watermark ?

  23 avril 2024, par DigiDuncan

  I'm writing a Java app that uses at some point an ffMPEG command in the console. This command needs to do the following :

  


  

  • Take the input file from DDTV/episodes-unconverted/example.[mpg/avi]

  


  • Make it 1280x780. (If it's 4:3, add pillar boxes, if it's 16:9... just you know do nothing I guess)

  


  • Add the watermark DDTV/DDTVwatermark.png at 10px from the bottom, and 10px from the right, at 33% transparency to the video.

  


  • Output it to DDTV/episodes-converted/example.mpg

  


  


• Raspivid & Avconv add watermark and save .mp4 from Youtube output stream

  25 octobre 2017, par walolinux

  I have this ffmpeg command working with a USB webcam in my raspberry pi :

  ffmpeg -thread_queue_size 512 -f v4l2 -video_size 1280x720 -i /dev/video0 -f lavfi -i anullsrc=cl=stereo:r=44100 -map 0:v -map 1:a -r 30 -aspect 16:9 -c:v h264 -preset veryfast -crf 25 -pix_fmt yuv420p -g 60 -maxrate:v 820k -bufsize:v 820k -profile:v baseline -c:a aac -b:a 128k -strict experimental -flags +global_header -vf "movie=logo.png [watermark]; [in][watermark] overlay=main_w-overlay_w-5:main_h-overlay_h-5 [out]" -f tee "[f=flv]rtmp://a.rtmp.youtube.com/live2/XXX|video.flv"

  This command adds a watermark (logo), saves mp4 to disk and broadcast to youtube the stream. It is working, but my raspberry pi hangs because it gets out of memory (CPU and RAM).

  This is why i have changed my USB webcam to raspicam 2.1.

  Now i am trying to do the same but using raspivid and avconv. But this is the only command i have already managed to use :

  raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | avconv -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/XXX

  I am looking to replicate functionality but with raspicam 2.1.

  Thanks.