On screen, Pastor Jim turns neon purple with a green halo. Missy howls with laughter. Mary grabs the laundry basket.

"The yadif filter deinterlaces the video. ‘Yet Another DeInterlacing Filter’—clearly named by someone who lacks imagination but possesses debugging skills. The libx264 codec will ensure efficient compression without sacramental loss."

"Sheldon, Pastor Jeff needs that church video edited by Sunday. Please tell me you haven't reformatted the VCR again."

"I've been experimenting with a command-line tool from the GNU project. It’s inelegantly named ffmpeg . But it’s pure power. Watch."