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ffmpeg Media Compression

Features

⁠

ffmpeg⁠

is a handy tool to batch compress medias, specifically videos and images to be used in Paid Posts. With a shell script we can automate their compression.

How to

With ffmpeg installed on your system, follow and personalize these steps.

1) Save the assets

Add all original assets to a folder.

2) Add a shell script

In the same folder, add one of those script, saving them as shell script, for example “yourscript.sh”.

You can modify the parameters to adjust the workflow, specifically FFMPEG_PARAMS, to modify the compression parameters and OUTPUT_DIR, to change the name of the output folder.

Optimise MP4s for Web

# Compress MP4 files for web

FFMPEG_PARAMS="-vcodec libx264 -crf 23 -preset slow -an -map_metadata -1"

# Compress MP4 files for web, resizing them to 1920 if needed

# FFMPEG_PARAMS="-vcodec libx264 -crf 23 -preset slow -an -map_metadata -1 -vf scale='min(1920\\,iw)':-1"

# Output directory for the converted files

OUTPUT_DIR="compressed-mp4"

# ANSI color codes

RED="\033[0;31m"

GREEN="\033[0;32m"

NC="\033[0m" # No Color

# Check if the output directory exists; create it if not

if [ ! -d "$OUTPUT_DIR" ]; then

mkdir -p "$OUTPUT_DIR"

echo -e "${GREEN}Created output directory: ${OUTPUT_DIR}${NC}"

else

echo -e "${GREEN}Using existing output directory: ${OUTPUT_DIR}${NC}"

# Convert each MP4 file in the current directory

for i in *.mp4;

name=$(echo "$i" | cut -d'.' -f1)

echo -e "${GREEN}Converting $i...${NC}"

ffmpeg -i "$i" $FFMPEG_PARAMS "${OUTPUT_DIR}/${name}.mp4"

done

echo -e "${GREEN}Conversion completed. Files saved in ${OUTPUT_DIR}${NC}"

Compress JPEGs for Web

#!/bin/sh

# Compress JPG files for web

FFMPEG_PARAMS="-compression_level 10"

# Compress JPG files for web, resizing them to 1920 if needed

# FFMPEG_PARAMS="-vf scale=1920:-1 -compression_level 10"

# Output directory for the converted files

OUTPUT_DIR="compressed-jpegs"