{"name":"FFmpeg Processing API","version":"1.0.0","endpoints":{"POST /process":"Upload files and process with FFmpeg","GET /health":"Health check"},"usage":{"command_format":"Use {input} for inputs, {output} for output, {font} for bundled font","placeholders":{"{input}":"Single input file (or {input1}, {input2} for multiple)","{output}":"Output file path (auto-generated)","{font}":"Path to bundled OpenSans font"},"examples":[{"description":"Add watermark text","command":"-i {input} -vf drawtext=fontfile={font}:text='WaterMark':fontcolor=white:fontsize=48:x=(w-text_w)/2:y=(h-text_h)/2 -c:v libx264 {output}"},{"description":"Darken + watermark","command":"-i {input} -vf eq=brightness=-0.3,drawtext=fontfile={font}:text='WaterMark':fontcolor=white:fontsize=48:x=(w-text_w)/2:y=(h-text_h)/2 -an -c:v libx264 {output}"},{"description":"Convert to MP4","command":"-i {input} -c:v libx264 -preset fast {output}"},{"description":"Extract audio as MP3","command":"-i {input} -vn -acodec mp3 -ab 192k {output}"}]}}