A capacitor across the battery leads is one of the cheapest, highest-impact additions to any FPV build. It suppresses voltage spikes, cleans video feed noise, and protects ESC MOSFETs from back-EMF transients. Why Voltage Spikes Happen When a motor changes speed rapidly, it generates back-EMF — a voltage spike that …

Choosing a video system determines image quality, latency, range, and cost. There is no universal best — each system has a place. Analog How it works: Camera outputs composite video; VTX (video transmitter) broadcasts it on 5.8 GHz. Receiver decodes the analog RF directly. Pros: Lowest latency (sub-ms RF link; ~3–7 ms …

Extract individual streams (audio, video, subtitles) from media files and merge them back together. List Streams in File Show All Streams 1# Detailed stream information 2ffmpeg -i input.mp4 3 4# More detailed (includes codec details) 5ffprobe -i input.mp4 6 7# JSON format (parseable) 8ffprobe -v quiet -print_format …

Basic Conversion Convert to MP4 (H.264) 1# High quality 2ffmpeg -i input.avi -c:v libx264 -preset slow -crf 18 -c:a aac -b:a 192k output.mp4 3 4# Medium quality (default) 5ffmpeg -i input.avi -c:v libx264 -crf 23 output.mp4 6 7# Fast encoding 8ffmpeg -i input.avi -c:v libx264 -preset ultrafast -crf 23 output.mp4 …

Cutting & Trimming Cut by Time 1# Cut from 00:01:00 to 00:02:00 (1 minute duration) 2ffmpeg -i input.mp4 -ss 00:01:00 -to 00:02:00 -c copy output.mp4 3 4# Cut from 00:01:00 for 30 seconds 5ffmpeg -i input.mp4 -ss 00:01:00 -t 00:00:30 -c copy output.mp4 6 7# Fast seek (less accurate but faster) 8ffmpeg -ss 00:01:00 -i …