81 articles about api.
expo-camera records ~95 MB per minute at 720p with no bitrate or fps control. Expo video compression options compared, plus the pipeline that fixes it.
TikTok video specs in one place: 1080x1920, H.264, 10 minutes, 500 MB mobile vs 4 GB web, plus the real FFmpeg preset and the Content Posting API rules.
FFmpeg audio ducking with sidechaincompress: the working filtergraph, the input order and format rules that break it, and the same mix as one API call.
Trim video by timestamp with FFmpeg, or send the cut list to a trim video by timestamp API: real commands, the keyframe trap, and no encoder box to run.
Whisper FFmpeg burn in captions API: transcribe to SRT and burn subtitles into video with two HTTP calls. No GPU, no local FFmpeg build, no 25 MB cap.
Convert MOV to MP4 automatically with one API call. iPhone HEVC footage breaks web pipelines. Catch uploads in n8n, Make, or Zapier and ship MP4.
FFmpeg concat different resolutions fails with -c copy. Two fixes that work: normalize then demux, or a one-pass filter_complex concat, plus how to pick.
n8n large video files crash the instance because binary data sits in memory. Learn the real cause, the env vars that buy headroom, and the URL-passing fix.
The ffmpeg side by side recipe that actually works: hstack needs matching heights, vstack matching widths, and shortest=1 stops the short clip freezing.
Crossfade clips with ffmpeg xfade: transition types, the offset math people get wrong, carrying audio with acrossfade, and chaining more than two clips.