Steam Clip Conversion Script

convert.sh

#!/bin/bash

# Configuration
mkdir -p processed
mkdir -p to_delete
PROCESSED_ROOT=$(realpath processed)
TO_DELETE_ROOT=$(realpath to_delete)

# Iterate through each clip folder
for clip_dir in clips/*/; do
    [ -e "$clip_dir" ] || continue
    
    dir_name=$(basename "$clip_dir")
    
    # Locate the folder containing the actual .m4s segments
    # Steam puts these in a nested 'video/bg_...' subfolder
    segment_dir=$(find "$clip_dir" -name "init-stream0.m4s" -exec dirname {} \;)

    if [[ -z "$segment_dir" ]]; then
        echo "No segments found in $dir_name, skipping."
        continue
    fi

    output_file="$PROCESSED_ROOT/${dir_name}.mp4"
    echo "Processing: $dir_name"

    pushd "$segment_dir" > /dev/null
    
    # 1. Stitch Video Chunks (init + all chunks)
    cat init-stream0.m4s chunk-stream0-*.m4s > temp_v.mp4
    
    # 2. Stitch Audio Chunks (if they exist)
    if [ -f "init-stream1.m4s" ]; then
        cat init-stream1.m4s chunk-stream1-*.m4s > temp_a.m4a
        # 3. Combine with +genpts to fix timestamp errors
        ffmpeg -y -loglevel error -fflags +genpts -i temp_v.mp4 -i temp_a.m4a -c copy "$output_file"
        rm temp_a.m4a
    else
        # Video only if no audio stream found
        ffmpeg -y -loglevel error -fflags +genpts -i temp_v.mp4 -c copy "$output_file"
    fi

    status=$?
    rm temp_v.mp4
    popd > /dev/null

    # Move source to 'to_delete' if successful
    if [[ $status -eq 0 ]]; then
        echo "Success. Moving to 'to_delete'."
        mv "$(realpath "$clip_dir")" "$TO_DELETE_ROOT/"
    else
        echo "Error: FFmpeg failed for $dir_name."
    fi
done

echo "Batch processing complete."