Pure setpts slowdown holds each source frame for the same wall-clock
time, which at 25 fps source / 2x means ~12.5 effective fps — felt
juddery. Switch to setpts=1.5*PTS (7.4s output) and add
minterpolate=fps=50:mi_mode=blend so the encoder generates blended
intermediate frames. Result is buttery, slightly faster than the 2x
version.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Re-encode from source with setpts=2.0*PTS so the 5-second clip plays
back over 10 seconds. Boxes drift down more gently, matches the
cinematic slow-motion feel asked for in the original prompt.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace the portrait 9:16 source with a 16:9 landscape rendering of
the same scene — the wide aspect matches the desktop viewport so the
full Antananarivo skyline is visible without center-cropping. Crop
bottom 150px to remove the HeyGen watermark, strip audio, no logo
composite this round (per request).
Final: 1280x570, 5s, 1.6 MB.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Swap the rotating Earth backdrop for an AI-generated golden-hour shot
of Antananarivo's skyline with navy cardboard boxes parachuting in
from across the frame. The hero box at center gets the MVA Global Fret
shield overlaid for the last second of the loop, so each cycle ends
on a brand reveal.
Pipeline: source video cropped (bottom 150px) to remove the HeyGen
watermark, audio stripped, MVA logo composited on the foreground box
from t=4 to t=5 with a 0.3s alpha fade-in, re-encoded to H.264 at CRF
22 (1.1 MB total).
Tint overlay softened — the original navy gradient was tuned for the
dark space backdrop and was crushing the golden hour light.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace the Pexels stock clip with a higher-quality Earth-from-space loop
hosted in /videos (720p, 60s, slowed 2x, 12 MB). The static SVG arc is
gone — the route is now computed every frame from a 3D projection that
follows the globe's rotation:
- France (48.85N, 2.35E) and Antananarivo (-18.9N, 47.5E) are placed on
a unit sphere, then rotated around the Y axis to match the apparent
central longitude of the video at each frame (LON0=140 deg, omega
=-5.75 deg/s, calibrated empirically from sample frames).
- A great-circle arc is sampled with slerp and projected
orthographically; only the front-side portion (z > 0) is drawn.
- Pins fade out when their city rotates behind the globe; the whole
group fades out when both endpoints are on the back side.
Mouse parallax dropped — it would desync the SVG from the video and
break alignment.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
