Watermarking Video from The Linux Command Line

Watermarking video from the Linux command line

ffmpeg -y -i 'inputFile.mpg' -vhook '/usr/lib/vhook/watermark.so -f /home/user/logo.gif'

Make note of the "-vhook" parameter; watermark.so path may vary.

Command for putting watermark on video

If anyone has the issue in future with putting watermark on video here is how you can do it. This can be done using writingminds compiled FFmpeg library:
http://writingminds.github.io/ffmpeg-android-java/

Follow the instructions how to setup FFmpeg into your project. After that by running this command I was able to put watermark on video:

        String commands[]={"-y","-i",videoInputPath,"-i", imagePath,"-filter_complex","[1:v]scale=200:200 [ovrl], [0:v][ovrl]overlay=main_w-overlay_w-5:main_h-overlay_h-5:enable='between(t,"+0+","+timeInSec+")'","-codec:a","copy","-strict","-2","-c:v","libx264","-preset","ultrafast",videoOutPath};

videoInputPath - is path of video

imagePath - is path of an image from external storage. I tried by using image from Drawable but didn't find that working (not saying it's not possible)

timeInSec - is length of video which you can get from MediaMetadataRetriever:

    File videoFile = new File(path);
    MediaMetadataRetriever retriever = new MediaMetadataRetriever();
    retriever.setDataSource(this, Uri.fromFile(videoFile));
    String time = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
    long timeInMillisec = Long.parseLong(time );
    timeInSec = (int) (timeInMillisec /1000);

videoOutPath - path where video is going to be saved after putting watermark

Command above will also scale watermark on 200:200 you can adjust according to your needs and put it in bottom right side.

How to add transparent watermark in center of a video with ffmpeg?

Examples to add a watermark / logo image on video using the overlay filter.

Centered

ffmpeg -i input.mp4 -i logo.png -filter_complex "overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2" -codec:a copy output.mp4

or with the shortened overlay options:

overlay=(W-w)/2:(H-h)/2

Top left

This is the easy one because the default, if you provide no options to overlay, is to place the image in the top left.

This example adds 5 pixels of padding so the image is not touching the edges:

overlay=5:5

Top right

With 5 pixels of padding:

overlay=main_w-overlay_w-5:5

or with the shortened options:

overlay=W-w-5:5

Bottom right

With 5 pixels of padding:

overlay=main_w-overlay_w-5:main_h-overlay_h-5

or with the shortened options:

overlay=W-w-5:H-h-5

Bottom left

With 5 pixels of padding:

overlay=5:main_h-overlay_h

or with the shortened options:

overlay=5:H-h-5

Transparency / opacity / alpha

Example to make watermark 50% transparent using the format and colorchannelmixer filters:

ffmpeg -i input.mp4 -i watermark.jpg -filter_complex "[1]format=rgba,colorchannelmixer=aa=0.5[logo];[0][logo]overlay=(W-w)/2:(H-h)/2:format=auto,format=yuv420p" -c:a copy output.mp4

Improved quality

Using the format=auto option in the overlay filter can make PNG watermarks look better:

ffmpeg -i input.mp4 -i watermark.png -filter_complex "overlay=5:H-h-5:format=auto,format=yuv420p" -c:a copy output.mp4

Note the addition of the format filter (yes, same name as the option, but a standalone filter) to reset it to YUV 4:2:0 which is needed for MP4 output. Remove ,format=yuv420p if you are not outputting MP4.

Scale watermark in relation to main video

Use the scale2ref filter:

Example to make logo 10% (1/10) the size of the main video:

ffmpeg -i input.mp4 -i watermark.png -filter_complex "[1][0]scale2ref=w=oh*mdar:h=ih*0.1[logo][video];[video][logo]overlay=5:H-h-5" -c:a copy output.mp4

How to show a watermark for 3 second on a MP4 using FFmpeg

FFmpeg 1.2 does not have timeline editing support. Please refer to your local FFmpeg documentation when using old releases. The online FFmpeg documentation is synced daily with the source code, and because FFmpeg development is very active the online documentation may not be suitable for your old release.

Releases are intended for distributors. General users should use the most recent source code from git master.

Watermarking Flash Videos (server-side)

You can use FFMPEG, a command line video tool to do this. It is cross-platform and easy enough to be used.

Watermarking example is shown in this tutorial.

I hope this helps.

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