Batch watermark course videos

Batch watermarking course videos can be done efficiently using tools like FFmpeg, which is a powerful open-source command-line tool for processing video and audio files. Here’s how you can batch watermark multiple videos in a folder.

Requirements

• FFmpeg installed on your computer
  Download FFmpeg

• A PNG image watermark (with transparency) or text watermark

• A folder containing all course videos

Method 1: Batch Watermark with Image Using FFmpeg (Windows/Mac/Linux)

1. Prepare your files:

   • Create a folder with all your course videos (e.g., .mp4 files).

   • Place your watermark image (e.g., watermark.png) in the same or known directory.

2. Create a Batch Script (Windows)

batch
CopyEdit
@echo off
setlocal
set watermark=watermark.png
set inputFolder=videos
set outputFolder=watermarked

if not exist %outputFolder% mkdir %outputFolder%

for %%f in (%inputFolder%*.mp4) do (
    ffmpeg -i "%%f" -i %watermark% -filter_complex "overlay=W-w-10:H-h-10" -codec:a copy "%outputFolder%%%~nf_watermarked.mp4"
)

3. Create a Shell Script (Mac/Linux)

bash
CopyEdit
#!/bin/bash
watermark="watermark.png"
inputFolder="videos"
outputFolder="watermarked"

mkdir -p "$outputFolder"

for file in "$inputFolder"/*.mp4; do
  filename=$(basename "$file")
  ffmpeg -i "$file" -i "$watermark" -filter_complex "overlay=W-w-10:H-h-10" -codec:a copy "$outputFolder/${filename%.*}_watermarked.mp4"
done

• W-w-10:H-h-10 positions the watermark 10 pixels from the bottom right. Change as needed.

Method 2: Add Text Watermark Instead of Image

FFmpeg Command Example

bash
CopyEdit
ffmpeg -i input.mp4 -vf "drawtext=text='YourCourseName.com':fontcolor=white:fontsize=24:x=W-tw-10:y=H-th-10" -codec:a copy output.mp4

To batch this, replace the watermark filter in the script above with the drawtext line.

Notes

• Font Configuration for drawtext:
  You may need to specify a font file path using fontfile=/path/to/font.ttf if FFmpeg can’t find default system fonts.

• Performance:
  Batch watermarking can take time depending on video length and resolution. Use multi-core CPUs for faster processing.

• Automation Tips:

  • Run scripts with scheduled tasks or crons.

  • Use cloud processing tools (like AWS Lambda with FFmpeg or cloud encoding services) for large-scale operations.

Alternative Tools (GUI-based)

If you prefer GUI tools over command line:

• HandBrake (requires scripting for batch)

• Adobe Premiere Pro (via Presets & Automation)

• DaVinci Resolve (Free, with scripting via Fusion)

• Wondershare Filmora or Movavi Video Editor (simplified batch export, watermarking)

This approach ensures consistency across all course materials and protects your intellectual property with minimal manual intervention.