Posts tagged "ffmpeg"

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.

FFmpeg audio out of sync is usually a variable-frame-rate source hitting a fixed -r. Detect VFR with ffprobe, then fix it with -fps_mode cfr and aresample.

Convert GIF to MP4 with FFmpeg in one command. The three flags that make it play everywhere, the autoplay markup that replaces the GIF, and how to batch it.

Firebase video processing breaks on Cloud Functions' 9-minute timeout and in-memory /tmp. Offload FFmpeg to a hosted API and write results back to Storage.

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.

What self-hosting the NCA Toolkit costs: Cloud Run's 5-minute wall, worker timeouts, bucket setup, and CVE patching, plus a side-by-side API comparison.

Clip, caption, and reformat video in one n8n workflow: three chained FFmpeg Micro API jobs, so n8n passes URLs, never video bytes, with no servers to run.

FFmpeg's "height not divisible by 2" error is a yuv420p chroma constraint, not a broken file. Three fixes (scale=-2, trunc, pad) with measured output sizes.

UGC video ad testing gets expensive in the variant matrix, not the shoot. Build hook, CTA, and aspect ratio variants from one base clip with FFmpeg or one call.

"moov atom not found" almost never means a corrupt video. It means a truncated upload or a Range request that missed the trailing moov box. Check and fix it.