Workflows/Generate a local video with LTX 2.5 Fast

Video / WORKFLOW

Generate a local video with LTX 2.5 Fast

Install LTX Desktop, load gated LTX 2.5 Fast weights, choose local text encoding, render a short clip, and check the saved video on a supported PC or Mac.

Verified sourceSource checked 9/29/2026

LOCALRENTED GPU

Freshness 64 out of 100. Repository age: 114 days old, Jul 23, 2026. Measures age, not quality.

Popularity 90 out of 100. 2,778,909 downloads in 30 days; 11,693 lifetime likes. Checked Nov 13, 2026. Measures adoption, not quality.

What do these scores mean?

Two ways to compare models. Neither score measures answer quality, benchmark performance, or whether a model fits your machine.

Freshness · release age

A new release starts at 100. The score halves every 180 days: 100 × 2^(−age in days / 180). When the release date is unavailable, a repository date is a fallback—not proof of when the model was released. Missing dates stay unscored.

Check the date source

Popularity · adoption

Downloads over the past 30 days carry 80% of the score; lifetime likes carry 20%. Both use a logarithmic scale, capped at 10 million downloads and 100,000 likes. If likes are unavailable, downloads carry all the weight. Missing download statistics stay unscored.

round(80 × min(1, log10(1 + downloads) / 7) + 20 × min(1, log10(1 + likes) / 5))

Check the statistics source

Scores as of Nov 14, 2026. Statistics checked Nov 13, 2026. Statistics are marked for refresh after 72 hours.Full scoring method

Before you begin

Hardware

Use local Fast only when your machine meets the app’s documented memory requirement. Render time changes with clip length and settings; no time estimate is available for your exact machine.

Machine	LTX 2.5 Fast · local
NVIDIA GPU · under 16 GB	Local mode will not start; use a larger GPU
NVIDIA GPU · 16 GB	Should run; start with a short, small clip
NVIDIA GPU · 24 GB	Should run with more headroom
NVIDIA GPU · 32 GB	Should run comfortably; speed not measured here
Apple Silicon · 16 GB total	Unlikely to have the required 15 GB free
Apple Silicon · 24 GB total	May run if at least 15 GB is free at launch
Apple Silicon · 32 GB or more	Should run if at least 15 GB is free
AMD Radeon GPU	No documented local LTX Desktop GPU path; this guide uses NVIDIA or Apple Silicon
Intel Arc GPU	No documented local LTX Desktop GPU path; this guide uses NVIDIA or Apple Silicon
CPU only · 32 GB system RAM	No supported local LTX Desktop CPU route; use a 16 GB NVIDIA GPU or Apple Silicon with 15 GB free memory, or rent a GPU.

Lightricks requires at least 16 GB NVIDIA VRAM or 15 GB free Apple Silicon memory at launch. No per-second generation claim is made without a matching published test.

VIDEO / LOCAL GENERATIONSOURCE-LINKED SETUP

Make your first video on your own machine.

This publisher-supported desktop route uses LTX 2.5 Fast locally. Follow the tab for your operating system, start with a short clip, and confirm the exported file plays.

Choose a package Run its commands Check the result

BEFORE YOU BEGIN

The documented package

This setup uses the package documented for this task. Review its source and supported platforms before starting.

Save your machine in My Hardware to get an automatic starting choice. You can always choose any package yourself.

CURRENT SETUP

LTX 2.5 Fast · local · official

Lightricks documents 16 GB NVIDIA VRAM or 15 GB free Apple Silicon memory at launch. The 24/32 GB recommendation is a YouRunAI headroom estimate, not a publisher benchmark.

Freshness 64 out of 100. Repository age: 114 days old, Jul 23, 2026. Measures age, not quality.

Popularity 90 out of 100. 2,778,909 downloads in 30 days; 11,693 lifetime likes. Checked Nov 13, 2026. Measures adoption, not quality.

What do these scores mean?

Two ways to compare models. Neither score measures answer quality, benchmark performance, or whether a model fits your machine.

Freshness · release age

Check the date source

Popularity · adoption

round(80 × min(1, log10(1 + downloads) / 7) + 20 × min(1, log10(1 + likes) / 5))

Check the statistics source

Scores as of Nov 14, 2026. Statistics checked Nov 13, 2026. Statistics are marked for refresh after 72 hours.Full scoring method

View weight source

THE WORKFLOW

Set up LTX 2.5 Fast · local on your machine

Choose your computer first, then its GPU path. The instructions below update to match your selection.

CHOOSE YOUR SETUPWindows

Windows 10/11, CUDA GPU with at least 16 GB VRAM, 16 GB RAM (32 GB recommended), and about 160 GB free disk space per Lightricks.

Check GPU and free disk space

In PowerShell, confirm your NVIDIA driver sees the GPU. Check that the installation drive has roughly 160 GB free for the app, environment, weights, and outputs.

nvidia-smi

Install LTX Desktop for Windows

Download the current Windows installer from the project’s Releases page, install it, and launch the app.

Official Windows installer

Sign in to access local weights

In the app’s first-run setup, sign in to Hugging Face and review the LTX 2.5 license if prompted. The local Fast weights are gated; this step requires internet before offline use.

LTX 2.5 weights and license

Choose local LTX 2.5 Fast

Open Settings → Models and select LTX 2.5 Fast as the active local checkpoint. Check that the app says Local generation. Pro is an API-only option and is not the model used in this guide.

Choose local text encoding

In Settings, select the Local Text Encoder if you want prompts to stay on your machine. It downloads additional weights and uses more memory. The optional API encoder is a separate cloud step.

Generate a short test clip

Open Text to Video, confirm LTX 2.5 Fast is selected for local generation, enter “A red kite over a quiet beach at sunrise,” then select 5 seconds and 540p for the first render. Leave other controls at their defaults. Click Generate, wait for the local progress indicator, and raise resolution or duration only after that clip succeeds.

Check and save the result

Play the completed clip, confirm it shows the requested subject and motion, and export it to a local file. This first run verifies the complete model, text encoder, decoder, and output path.

SUCCESS CHECK · LTX 2.5 Fast · local

A playable local video

The app shows Local generation, completes a short text-to-video render, and exports a file that plays through on your machine. Check the content against your prompt.

This guide covers the local Fast checkpoint only. LTX 2.5 Pro and the optional API text encoder use cloud services.

Back to setup steps

When it doesn’t go to plan

The app switches to API mode on my 5090

Confirm the NVIDIA driver is working, the GPU shows at least 16 GB VRAM in nvidia-smi, and restart LTX Desktop. The hardware mode is selected at launch.

My Mac has enough total RAM but shows API mode

LTX checks free memory at launch. Close large apps, fully quit LTX Desktop, and reopen it. It needs 15 GB free, not merely installed.

Weights cannot download

REFERENCE LIBRARY

Sources and files

Original instructions, model files, and compatibility notes behind this setup.

3 SOURCES

01Official LTX Desktop requirements and setupgithub.com 02Official LTX Desktop installersgithub.com 03LTX 2.5 weights and access termshuggingface.co

The model behind this workflow

LTX 2.5

Keep exploring

Text

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LOCALRENTED GPU

Verified source