harbcharbel/ltx-superman-flight

superman-flight — 10s hero-flight video

A 10.04-second text-to-video clip: a caped man flying through a blue sky, cinematic tracking shot. Generated with Lightricks/LTX-Video-0.9.8-13B-distilled via diffusers 0.40.0 (LTXPipeline).

Duration	10.04 s (241 frames @ 24 fps)
Resolution	768×512
Steps / guidance	8 steps, guidance_scale 1.0 (distilled checkpoint), seed 42
Hardware	NVIDIA A100 80GB (a100-large HF job), whole bf16 pipeline on GPU
Wall clock	~93 s total incl. 47.6 GB model download; ~20 s for encode + 8 denoise steps
Output size	703 kB (superman_flight.mp4)

Files

• superman_flight.mp4 — the clip
• generate_flight.py — the exact script that produced it, including the tokenizer workaround required with transformers>=5 (5.17.0 misroutes all SentencePiece T5 tokenizers through its tiktoken conversion path and crashes on spiece.model; the script substitutes a validated sentencepiece shim).

Prompt

A man in a flowing red cape flies powerfully through a bright blue sky with scattered white clouds, one fist stretched forward, body horizontal, cinematic aerial tracking shot following him, golden-hour sunlight glinting on the cape, clouds streaking past with motion blur, high-budget blockbuster cinematography, sharp focus, vibrant color grading