Add 480p 3x10s MiniMax compact prepend variant

optimized/image-to-video/README.md

@@ -6,3 +6,4 @@ Home for maintained category masters focused on image-to-video generation.
 
 - `ltx23-3070-simple-master`
 - `minimax-h3-contex-loop-3070-compact-30s`
+- `minimax-h3-contex-loop-3070-compact-prepend-480p-3x10s`

optimized/image-to-video/minimax-h3-contex-loop-3070-compact-prepend-480p-3x10s/README.md

@@ -0,0 +1,45 @@
+# MiniMax H3 Contex Loop 3070 Compact Prepend 480p 3x10s
+
+## Summary
+
+Safer `MiniMax H3` imported-video extension master for the compact model stack
+when `480p` and `10s` per generated clip are the practical VRAM ceiling.
+
+This variant keeps the `Contex Loop` existing-video flow, preserves the
+original source at the front, and generates the extension as three `10` second
+scenes instead of two `15` second scenes.
+
+## Status
+
+- `best-current-compact-existing-video-safe-vram`
+
+## Workflow asset
+
+- `workflow.json`
+
+## Built from
+
+- `optimized/image-to-video/minimax-h3-contex-loop-3070-compact-30s/`
+
+## Key model stack
+
+- `minimax_h3_ref2va_pruned_w4a8_mixed.safetensors`
+- `qwen3vl_32b_heretic_minimax_h3_nvfp4.safetensors`
+- `minimax_h3_video_vae_int8_convrot.safetensors`
+- `minimax_h3_audio_vae_fp32.safetensors`
+- `minimax\\minimax_h3_fl2v_lightx2v_turbo_4step_v0.1_comfy.safetensors`
+
+## Main changes
+
+- set working canvas to `864x480`
+- switched to `prepend_original=true`
+- split the generated extension into `3 x 10s` scenes
+- kept `5` step defaults for the compact stack
+- kept `context_length=22`, `encode_mode=video`, `anchor_mode=head`
+- kept source video as `1.mp4`
+
+## Why this exists
+
+- the smaller stack appears able to hold `480p`
+- `15s` clips are more likely to OOM
+- `10s` clips are a more honest ceiling for repeatable runs