9je 4dZddlZdZdZdZdZdZdZd ZdS) zLTX-2.5 VFX recipes, using the shared LTX pipeline and RGBA exporter. Recipes: https://huggingface.co/Lightricks/LTX-2.5-22b-IC-LoRA-Alpha-Gen and https://huggingface.co/Lightricks/LTX-2.5-22b-IC-LoRA-Layout-To-Render. Nu### Alpha Gen Generate a soft grayscale matte from a source video: white is opaque, black is transparent. Upload the RGB clip as **Source Video**. Its original dimensions are preserved; dimensions are padded internally to multiples of 32, then cropped back. Keep clips at **145 frames or fewer** (121 is a good starting point), up to 1920×1088, with a frame count of 8n+1. The selected clip is trimmed to a supported frame count. Resize larger footage before loading it. **Whole Frame** needs no mask. **Masked Area** optionally restricts the result to your uploaded or Magic Mask selection; **Non Masked Area** uses the inverse. The selection multiplies the final matte, preserving soft edges. It does not change which foreground the model detects. The gallery video is the grayscale matte. The original RGB clip with that alpha is saved beside it as RGBA PNG frames in a ZIP or ProRes 4444 MOV, chosen in **Configuration → Outputs → RGBA Video Output**. Alpha Gen uses one phase, eight steps and no text conditioning. a Alpha Gen does not use a text prompt. Keep the default **Generate Alpha Matte** operation label; it is ignored during inference. Use the optional selection mask to restrict the finished matte. Text cannot select a subject or create a foreground missed by the model.u### Layout to Render Turn a clay viewport animation or a simple blockout/playblast into a finished shot. Upload the animation as **Layout Video** and a finished version of its first frame as the **Appearance Reference**. The clip supplies camera motion, composition and object placement; the appearance image supplies lighting, palette, materials and detail. Do not use the clay frame itself as the appearance image. An optional End Image can help maintain the look. Start with two phases, eight first-pass steps, LoRA strength 1 in both phases and 24 fps. 1920×1088 output uses a 960×544 first pass and three full-resolution refinement steps. Dimensions must be multiples of 64; clip lengths use 8n+1 frames. **Two Phases with Tiling** evaluates overlapping spatial crops during each second-pass step and blends their predictions before advancing the whole video. It reduces the spatial extent of each transformer call and can change fine details. VAE tiling remains a separate setting. uDescribe the finished shot in one or two sentences, matching the appearance reference: materials, lighting, atmosphere and subject details. Avoid describing it as clay, 3D or Unreal footage. Example: “A weathered stone well surrounded by summer grass and small white flowers. Warm midday sunlight, realistic stone and wood, matching the reference image.” The layout clip already supplies camera movement and object placement.c R|dd}|dd}|s|siSidddddgdgd dd dd |rd nd ddddddd|rdnddfgddddddd|rgdndg|ddd dd!dd"d#di}|rn|id$td%td&d'd(td)d*gd+d,d-gd.dd/dd0dd1dd2dd3dd4dd5dd"ddd6d7gdd8d9d:d;dddd?dd@n5|tt dAt dBgdCdCdDddEdddddF |S)GNltx2_alpha_genFltx2_layout_to_render acceleratednativesliding_windowvideo_guide_outpaintingcustom_settingsv2i_switch_supportedmultiple_images_as_text_promptsimage_prompt_types_allowedTTEcustom_frames_injectioncontrol_video_trimTextra_control_framesrguide_custom_choicesz Source Videoz Layout VideoVGz OPDEMVG&KFz Video Input)choicesletters_filterdefaultlabelguide_custom_choices_imagemask_preprocessing)ANArzAlpha Selection) selectionvisibler self_refinerNAGcapability_overrides text_to_videoinfos prompt_infos deepy_infosuAlpha Gen: source RGB video → grayscale matte plus RGBA ZIP/ProRes companion. Native source dimensions, ≤1920×1088, ≤145 frames, 8n+1. One phase, 8 steps. Optional mask restricts the final alpha; source RGB stays unchanged.deepy_prompt_infos specialitiesz alpha output)RGBAz alpha mattez video mattingztransparent videozExtract a grayscale matte from source video and export original RGB with alpha as PNG ZIP or ProRes 4444. An optional selection mask restricts the final matte.)namealiases description returns_audiomultimedia_generationauto_null_audioany_audio_promptaudio_prompt_choicesaudio_prompt_type_sourcesoutput_audio_is_input_audioend_frames_always_enabled)r# inpaintingprompt_enhancer_def)rrguidance_max_phaseslock_guidance_phases z$Preparing Alpha Source and Selection)phase_2_spatial_tilingvae_block_sizeframes_minimumframes_selection_maximumcustom_preprocessorcustom_preprocessor_raw_inputszLayout to Render: provide a layout/playblast video plus one finished appearance image based on its first frame. Optional End Image. Two phases (8+3 steps), LoRA 1; optional phase-2 spatial tiling. 24 fps, 8n+1 frames, dimensions divisible by 64.)Appearance ReferenceIrDrC)rrrr show_label) r$r%r&r'image_ref_choicesone_image_ref_neededone_image_ref_onlyno_background_removalr=)getupdate ALPHA_INFOSALPHA_PROMPT_INFOS LAYOUT_INFOSLAYOUT_PROMPT_INFOS) model_defalphalayoutresults 7C:\Users\johnn\OneDrive\Documents\AI\models\ltx2\vfx.py vfx_model_defrU1s MM*E 2 2E ]]2E : :F V  x % !:B @QSU   (I%  %U&[_-`,avBOS^k!l!l  %d  u,NOOOO2$[`k|}}    %e  % 8 F    [ "02D D  !"4  nA~A~A~Pqrrs  U  %t   ( 0Me  (  #e5$Q$Q  "#C#C  "1 '=d _d ASV#Imq        !3FS"5.K-L`cpsUei"j"j$(_c&*       Mc|dddddd}d}||jdd|jddkrt d|jdd|jdfvrt d |d ddfd dd }|jddkr#|d |jdd d }d|vrd|z }|d|dfS)zNRaw THWC bytes from the shared reader; do not erase RGB outside the selection.rr8_@?NzGAlpha selection mask must have the same dimensions as the source video.zGAlpha selection mask must be one frame or match the source clip length..dimo@N) permutefloatdiv_sub_shape ValueErrormean unsqueezeexpand)videomaskvideo_prompt_typesourcers rTpreprocess_alpha_sourcern^sE ]]1aA & & , , . . 3 3E : : ? ? 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