FFmpeg Preferences
Current FFmpeg Command Preview
ffmpeg -i input.mp4 -c:v libx264 -crf 28 -preset medium -c:a aac -b:a 128k output.mp4
Video
Video Codec
Select the video encoding format. H.264 offers universal browser & device compatibility.
Constant Rate Factor (CRF)
CRF 28Lower values preserve higher visual quality but result in larger files. Higher values compress more aggressively.
18 (High Quality)Balanced40 (Max Compression)
Max Resolution Scaling
Optionally downscale input videos to a maximum vertical height while maintaining aspect ratio.
Audio
Audio Codec
Choose the audio encoding format. AAC is widely supported.
Audio Bitrate
Configure audio track quality or remove the audio stream entirely to reduce size.
Performance
CPU Preset (Encoding Speed vs Compression Efficiency)
A slower preset provides better compression efficiency (smaller file size for given quality), but requires more processing time.
Concurrent Jobs
2 JobsNumber of videos to compress simultaneously. Higher values use more CPU/RAM resources.
18 (Max)