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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>LanDiff</title>
<link href="./asserts/style.css" rel="stylesheet">
<!-- 添加 MathJax 支持 -->
<script type="text/javascript" id="MathJax-script" defer
src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js">
</script>
<script type="text/javascript">
window.MathJax = {
tex: {
inlineMath: [['$', '$'], ['\\(', '\\)']]
},
startup: {
pageReady: function () {
return MathJax.startup.defaultPageReady().then(function () {
console.log('MathJax 初始化完成');
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}
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};
// 确保在DOM完全加载后重新渲染数学公式
document.addEventListener('DOMContentLoaded', function () {
if (typeof MathJax !== 'undefined') {
MathJax.typeset();
}
});
</script>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
.caption {
margin-top: 5px;
font-size: 14px;
color: #555;
}
.container {
display: flex;
flex-wrap: wrap;
gap: 10px;
}
.row {
display: flex;
align-items: center;
justify-content: center;
}
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display: flex;
align-items: center;
justify-content: center;
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display: flex;
}
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.label {
writing-mode: vertical-rl;
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text-align: center;
font-size: 16px;
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.video-wrapper {
display: flex;
gap: 60px;
}
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display: flex;
gap: 100px;
}
.video-wrapper video,
.video-wrapper2 video {
width: 200px;
margin: 10px 0;
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display: flex;
justify-content: space-between;
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flex: 1;
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flex: 1;
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}
.text-column-ref2 {
flex: 1;
width: 50px;
padding-left: 10px;
box-sizing: border-box;
}
</style>
<style>
/* Grok style */
@font-face {
font-family: 'Roboto';
font-style: normal;
font-stretch: 100%;
font-display: block;
font-weight: 300 700;
src: url('./asserts/roboto.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
section.demos * {
box-sizing: border-box;
}
section.demos video {
aspect-ratio: 720 / 480;
}
section.demos {
font-family: "Roboto", sans-serif;
padding: 0;
margin: 0 auto;
max-width: 1920px;
}
section.demos .content {
padding: 0 10%;
}
section.demos .button {
background-color: #ccc;
color: #000;
padding: 10px 20px;
border-radius: 100px;
cursor: pointer;
transition: background-color 0.5s;
text-decoration: none;
margin: 0 8px 8px 0;
display: inline-block;
}
section.demos .button:hover {
background-color: #fff;
}
section.demos section {
margin-top: 100px;
}
section.demos section:first-of-type {
margin-top: 0;
}
.title {
top: 0;
padding: 20px 10%;
font-size: 24px;
font-weight: 600;
z-index: 1000;
min-height: 60px;
box-sizing: border-box;
text-align: center;
}
section.demos .description {
padding: 0 10% 20px;
line-height: 25px;
font-weight: 300;
}
section.demos .highlight {
color: #fff;
font-weight: 500;
}
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display: flex;
column-gap: 5px;
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justify-content: space-between;
padding: 0 5px 5px;
}
section.demos .flex-row>div {
flex-grow: 1;
flex-basis: 0;
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section.demos .flex>div {
width: calc(100% / 3 - 5px * 2 / 3);
margin: 2.5px 0;
position: relative;
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display: flex;
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}
section.demos video,
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}
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left: 0;
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font-size: 48px;
color: rgba(255, 255, 255, 0.6);
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.video-container {
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}
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position: absolute;
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writing-mode: vertical-rl;
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font-size: 18px;
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gap: 20px;
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.video-container video {
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aspect-ratio: 720/480;
/* background: #000; */
}
.video-container .text-column {
width: calc(33.33% - 14px);
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padding: 10px;
box-sizing: border-box;
font-size: 14px;
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text-align: center;
}
@media (max-width: 1200px) {
.video-container video,
.video-container .text-column {
width: calc(50% - 10px);
}
}
@media (max-width: 768px) {
.video-container video,
.video-container .text-column {
width: 100%;
}
.video-container .label {
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font-size: 16px;
}
}
.content p {
width: 80%;
margin: 10 auto;
line-height: 1.6;
}
.video-row {
display: flex;
/* justify-content: center; */
gap: 10px;
margin: 20px auto;
max-width: 100%;
}
.video-column {
flex: 1;
display: flex;
flex-direction: column;
align-items: center;
max-width: 25%;
}
.video-column:not(:last-child) video {
/* width: 100%; */
height: 260px;
aspect-ratio: 1/1;
object-fit: cover;
}
.video-column:last-child video {
/* width: 100%; */
height: 260px;
aspect-ratio: 720/480;
object-fit: cover;
}
.label_method {
margin-bottom: 10px;
font-size: 16px;
font-weight: bold;
}
@media (max-width: 768px) {
.video-row {
flex-wrap: wrap;
}
.video-column {
max-width: 100%;
}
}
a {
text-decoration: none;
}
a:hover {
text-decoration: none;
}
</style>
</head>
<body>
<div class="content">
<h1><strong>The Best of Both Worlds: Integrating Language Models and Diffusion Models for Video
Generation</strong></h1>
<p style="text-align: center; font-size: 1.3em">
<a href="https://arxiv.org/abs/2503.04606" target="_blank">[Paper]</a>
<a href="https://github.com/LanDiff/LanDiff" target="_blank">[Code]</a>
<a href="asserts/bibtex.txt" target="_blank">[BibTeX]</a>
</p>
<p id="authors" class="serif">
<span style="font-size: 0.9em">
<a href="https://i.yinaoxiong.cn" target="_blank">Aoxiong Yin<sup>1*</sup></a>
<a href="https://alanswift.github.io/" target="_blank">Kai Shen<sup>2*</sup></a>
<a href="https://scholar.google.com/citations?user=1jwteOQAAAAJ&hl=en" target="_blank">Yichong
Leng<sup>2</sup></a>
<a href="https://tan-xu.github.io/" target="_blank">Xu Tan<sup>2†</sup></a>
<a href="https://scholar.google.com.hk/citations?hl=en&user=Jv4LCj8AAAAJ" target="_blank">Xinyu
Zhou<sup>2</sup></a>
<a href="https://person.zju.edu.cn/juncheng" target="_blank">Juncheng Li<sup>1†</sup></a>
<a href="https://person.zju.edu.cn/en/siliang" target="_blank">Siliang Tang<sup>1</sup></a>
</span>
<br>
<span style="font-size: 1.0em; margin-top: 0.6em">
<a href="https://www.zju.edu.cn/" target="_blank" ><sup>1</sup>Zhejiang University</a>
<a href="https://www.moonshot.cn/" target="_blank"><sup>2</sup>Moonshot AI</a>
<br>
</span>
<span style="font-size: 12pt;"><b><sup>*</sup>Equal contribution</b></span>
<span style="font-size: 12pt;"><b><sup>†</sup>Corresponding author</b></span>
<br>
</p>
</div>
<div class="content">
<h2 style="text-align:center;">Abstract</h2>
<p>Recent advancements in text-to-video (T2V) generation have been driven by two competing paradigms:
autoregressive language models and diffusion models. However, each paradigm has intrinsic limitations:
language models struggle with visual quality and error accumulation, while diffusion models lack semantic
understanding and causal modeling. In this work, we propose LanDiff, a hybrid framework that synergizes the
strengths of both paradigms through coarse-to-fine generation. Our architecture introduces three key
innovations: (1) a semantic tokenizer that compresses 3D visual features into compact 1D discrete
representations through efficient semantic compression, achieving a $\sim$14,000$\times$ compression ratio;
(2) a language model that generates semantic tokens with high-level semantic relationships; (3) a streaming
diffusion model that refines coarse semantics into high-fidelity videos. Experiments show that LanDiff, a 5B
model, achieves a score of 85.43 on the VBench T2V benchmark, surpassing the state-of-the-art open-source
models Hunyuan Video (13B) and other commercial models such as Sora, Kling, and Hailuo. Furthermore, our
model also achieves state-of-the-art performance in long video generation, surpassing other open-source
models in this field.</p>
</div>
<div class="content">
<h2 style="text-align:center;">Overview</h2>
<img class="summary-img" src="./asserts/images/model.jpg" style="width:60%;">
<p>The architecture of LanDiff. Given text inputs, we first extract text embeddings and employ an LLM to
generate semantic tokens in the first stage. Subsequently, we utilize a diffusion model to synthesize
perceptual features conditioned on these semantic tokens, followed by a VAE decoder that transforms these
features into the final video frames.</p>
</div>
<div class="content">
<h2 style="text-align:center;">Video Generation Models Performance Comparison</h2>
<img class="summary-img" src="./asserts/images/radar_chart.svg" style="width:80%;">
<p><strong>Radar chart visualization of performance comparison across different dimensions on VBench.</strong>
The plot compares LanDiff against five competitive baselines: Sora, Hailuo, HunyuanVideo, Kling, and
CogVideoX-5B. For better readability, the values in the radar chart have been normalized to a scale ranging
from 0.3 to 0.8. The normalization was performed using the min-max scaling formula: $normalized = 0.3 + 0.5
\times \frac{value - min\_value}{max\_value - min\_value}$</p>
</div>
<section id="video" class="demos">
<div class="title">
Text-to-Video Generation Demos
</div>
<div class="flex flex-dynamic">
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/868304716147610931500990.mp4"></video>
<div class="prompt">A snail with a brown and tan shell is seen crawling on a bed of green moss. The
snail's body is grayish-brown, and it has two prominent tentacles extended forward. The environment
suggests a natural, outdoor setting with a focus on the snail's movement across the mossy surface.
</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/1025212555484361222543592_103_1516525842.mp4"></video>
<div class="prompt">A vintage 1980s kitchen, with checkered floor tiles and pastel-colored appliances,
is the setting for a surreal scene. In the center, an ostrich stands tall, its feathers a stark
contrast against the dated decor. The camera slowly pushes in, capturing the ostrich's curious gaze
as it peers around the room, its long neck gracefully arching. The lighting is soft and warm,
casting a nostalgic glow over the scene. The camera continues to move closer, the focus shifting
from the room to the ostrich, until its large, expressive eyes fill the frame, a symbol of the
strange and unexpected in the mundane.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/626743004596151660631257_358_697095427.mp4"></video>
<div class="prompt">A close-up shot reveals a clear glass container filled with water, with a dropper
poised above it. The dropper releases a golden stream of olive oil, which descends into the water,
forming a mesmerizing, slow-motion dance. The oil gradually separates into distinct droplets, each
suspended in the water, creating a captivating interplay of light and shadow. Next, a second dropper
introduces a dark stream of balsamic vinegar, which cascades into the container, mingling with the
oil droplets and forming intricate patterns. The camera captures the fascinating interaction between
the two fluids, as they swirl and separate, highlighting the unique properties of oil and vinegar.
</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/559916943675374676580046_807_4094793464.mp4"></video>
<div class="prompt">A camera slowly tilts upward from the base of a towering, intricately-carved marble
statue, revealing its grandeur and craftsmanship. The statue, dressed in ancient robes, stands in a
sunlit square, its majestic head adorned with a laurel wreath. As the camera moves, the statue's
detailed features, including its strong jawline and piercing eyes, become more prominent. The
sunlight casts dramatic shadows on the statue's face, highlighting the artist's skill. The final
shot captures the statue's serene expression, as if it's surveying its domain with wisdom and
authority.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/304586930582473081225226_19_3072196679.mp4"></video>
<div class="prompt">A close-up shot of a Victoria crowned pigeon reveals its striking blue plumage and
red chest, with a delicate, lacy crest and striking red eyes. The bird tilts its head slightly,
exuding regality and majesty. The background is blurred, drawing attention to the bird's striking
appearance. The pigeon's feathers shimmer under the soft lighting, highlighting its majestic
stature. The camera slowly zooms in, capturing the intricate details of the bird's plumage and the
subtle movements of its head. The pigeon's eye, a deep, captivating red, seems to hold a story of
its own. The video ends with a slow, graceful movement of the bird's head, leaving a lasting
impression of its regal presence.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/206531926790111493017625_3_2316226627.mp4"></video>
<div class="prompt">A drone captures the breathtaking view of waves crashing against the rugged cliffs
along Big Sur's Garrapata State Park beach. The blue waters create white-tipped waves, while the
golden light of the setting sun illuminates the rocky shore. A small island with a lighthouse sits
in the distance, and green shrubbery covers the cliff's edge. The steep drop from the road down to
the beach is a dramatic feat, with the cliff's edges jutting out over the sea. This is a view that
captures the raw beauty of the coast and the rugged landscape of the Pacific Coast Highway.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/85258677229836188764330_9_1195100381.mp4"></video>
<div class="prompt">A group of playful golden retriever puppies, with their fluffy fur and sparkling
eyes, frolic in a pristine snow-covered field. Their heads pop out of the snow, covered in white
powder, as they joyfully wrestle and tumble, their tails wagging with excitement. The puppies, with
their warm golden coats, are a stark contrast against the snowy landscape, creating a heartwarming
scene. As they play, their faces are covered in snow, making them look like little snowballs, adding
to the charm of the moment.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/1108107354646468857646893.mp4"></video>
<div class="prompt">A series of images depict the Earth from space, focusing on the continent of
Australia. The images showcase the continent's vast deserts, green vegetation, and coastal regions.
The curvature of the Earth is visible, with the blue of the oceans contrasting against the brown and
green hues of the land. Cloud formations can be seen over parts of the continent, and the darkness
of space is visible in the background.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/686184777047530087769539_8_1964631533.mp4"></video>
<div class="prompt">A young man in his 20s, wearing a casual white t-shirt and blue jeans, sits on a
fluffy white cloud in a clear blue sky, engrossed in a hardcover book. His brown hair is tousled,
and he sports a pair of black-rimmed glasses. The sun casts a warm glow on his face, highlighting
his focused expression. As he reads, a gentle breeze rustles the pages of the book, and the cloud
slowly drifts across the sky, creating a serene and whimsical scene.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/843335664382246757978983_69_1238487953.mp4"></video>
<div class="prompt">A close-up shot reveals a vibrant blue parrot, its feathers shimmering with an
iridescent glow as they catch the sunlight, showcasing the bird's unique plumage and dazzling
colors. The parrot's feathers are a rich, deep blue, with hints of green and purple, creating a
mesmerizing visual effect. The bird's eyes are a striking contrast, a piercing orange that seems to
hold a depth of wisdom. The camera slowly pans over the parrot's body, capturing the intricate
patterns and the way the feathers seem to dance with each movement. The video ends with a close-up
of the parrot's beak, a vibrant red that complements the blue feathers, as it opens its mouth to
reveal a bright yellow tongue, completing the stunning display of this magnificent creature's
vibrant colors.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/991878424292337451451906_1_3977168428.mp4"></video>
<div class="prompt">A group of majestic woolly mammoths, their fur a stark contrast against the snow,
tread through a pristine meadow, their long, woolly coats gently swaying in the breeze. In the
distance, snow-dusted trees and dramatic, snow-capped mountains create a breathtaking backdrop. The
mid-afternoon light filters through wispy clouds, casting a warm glow over the scene. The camera,
positioned low, captures the grandeur of these colossal creatures with stunning clarity, the depth
of field accentuating their size and the vastness of the landscape.</div>
</div>
<div class="prompt-wrap full-screen-wrap" style="position: relative;">
<div class="loading-placeholder">
<div class="loading-text">Loading...</div>
<div class="loading-icon">☕</div>
</div>
<video autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling.style.display='none';"
src="./asserts/LanDiff_videos/775375223852762864777883.mp4"></video>
<div class="prompt">A woman with long, wavy red hair and a black sleeveless top is holding and looking
at a smartphone with a smile. She is standing on a city street with buildings and a storefront in
the background. Her expression changes from neutral to smiling as she interacts with the device. The
lighting suggests it is daytime, and the focus is on the woman with a shallow depth of field
blurring the background.</div>
</div>
</div>
</section>
<div class="content video-container">
<div class="title">
Text-to-Video Model Comparison
</div>
<div class="row">
<div class="label">CogVideoX-5B</div>
<div class="video-wrapper">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/CogVideoX_videos/322677362417449528122764_46_3157974454.mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/CogVideoX_videos/382106989029666394911021_264_1408414039.mp4"
type="video/mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/CogVideoX_videos/31211933221209806999685_644_3761508527.mp4"
type="video/mp4">
</video>
</div>
</div>
<div class="row">
<div class="label">LanDiff</div>
<div class="video-wrapper">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/322677362417449528122764_46_3157974454.mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/382106989029666394911021_264_1408414039.mp4" type="video/mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/31211933221209806999685_644_3761508527.mp4" type="video/mp4">
</video>
</div>
</div>
<div class="row">
<div class="video-wrapper">
<div class="text-column">
"A colossal, human-shaped cloud towers over the earth, its massive form casting a shadow across the
landscape. The cloud man's features are distinct, with a stern expression and outstretched arms.
Suddenly, the cloud man releases a barrage of lightning bolts, illuminating the sky as they streak
towards the earth. The scene is set against a backdrop of a stormy sky, with dark clouds and distant
thunder adding to the dramatic atmosphere."
</div>
<div class="text-column">
"A life-sized ice sculpture of a playful dog, with intricate details and a joyful expression, stands
in the middle of a sunlit, grassy field on a sweltering summer day. The ice dog, initially solid and
vibrant, begins to melt under the relentless heat, with droplets of water forming on its surface. As
the day progresses, the ice dog's form gradually diminishes, with its once sharp features becoming
blurred and distorted. The melting process accelerates, and the ice dog's body starts to collapse,
pooling into a puddle of water on the ground. By the end of the day, all that remains is a shallow
puddle, reflecting the cloudless sky, with the memory of the once majestic ice dog now just a
memory."
</div>
<div class="text-column">
"Two vibrant hot air balloons, one red and the other blue, are seen soaring through a clear blue
sky, their baskets gently bumping against each other mid-air. The red balloon features intricate
gold patterns on its surface, while the blue balloon boasts a white and silver design. As they
collide, the passengers in the baskets, dressed in casual attire, react with surprise and
excitement. The scene is set against a backdrop of a picturesque landscape, with lush green hills
and a sparkling river below. The balloons' vibrant colors contrast beautifully with the azure sky,
creating a visually stunning and dynamic scene."
</div>
</div>
</div>
<!-- next row -->
<div class="row">
<div class="label">CogVideoX-5B</div>
<div class="video-wrapper">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/CogVideoX_videos/634070603180283412052244_34_3185801568.mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/CogVideoX_videos/242734998979735251488973_715_628265207.mp4"
type="video/mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source
src="./asserts/CogVideoX_videos/ec8f3cf104eede03a9bb07f7aa7b1ac66088a94a4c6e0aadcb6f0686.mp4"
type="video/mp4">
</video>
</div>
</div>
<div class="row">
<div class="label">LanDiff</div>
<div class="video-wrapper">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/634070603180283412052244_34_3185801568.mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/242734998979735251488973_715_628265207.mp4" type="video/mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/ec8f3cf104eede03a9bb07f7aa7b1ac66088a94a4c6e0aadcb6f0686.mp4"
type="video/mp4">
</video>
</div>
</div>
<div class="row">
<div class="video-wrapper">
<div class="text-column">
"Wind turbines stand in a vast, open field, their blades spinning gracefully in the breeze. The
elegant motion of the turbine blades is captured against a clear blue sky. The wind turbines appear
serene in the landscape, highlighting the vastness of the open field as they become smaller in the
distance."
</div>
<div class="text-column">
"A breathtaking view of a majestic snowy mountain peak is reflected in a pristine alpine lake,
creating a flawless mirror image. The sun's rays cast a subtle shimmering effect on the water's
surface, enhancing the serene ambiance. The camera captures the scene from a distance, highlighting
the symmetry and beauty of nature's perfect reflection. The mountain's snow-capped peak, the lake's
clear waters, and the shimmering effect all contribute to a mesmerizing and tranquil atmosphere."
</div>
<div class="text-column">
"A close-up view of a Christmas tree reveals a variety of decorations including a purple ornament
with a gold pattern, a gold textured ornament, a small white house-shaped ornament with red roof and
gold details, and a brown pine cone. The tree branches are dense and green, providing a natural
backdrop for the ornaments. The camera pans slightly across the scene, maintaining focus on the
ornaments while subtly shifting the perspective."
</div>
</div>
</div>
<!-- next row -->
<div class="row">
<div class="label">CogVideoX-5B</div>
<div class="video-wrapper">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/CogVideoX_videos/219117758025776587287798_57_1806118233.mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/CogVideoX_videos/101925253267432621642627_48_67802077.mp4" type="video/mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source
src="./asserts/CogVideoX_videos/a06f6077d45f097b46f833f14d799bae0eefadccc363e5697dedcace.mp4"
type="video/mp4">
</video>
</div>
</div>
<div class="row">
<div class="label">LanDiff</div>
<div class="video-wrapper">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/219117758025776587287798_57_1806118233.mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/101925253267432621642627_48_67802077.mp4" type="video/mp4">
</video>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';">
<source src="./asserts/LanDiff_videos/a06f6077d45f097b46f833f14d799bae0eefadccc363e5697dedcace.mp4"
type="video/mp4">
</video>
</div>
</div>
<div class="row">
<div class="video-wrapper">
<div class="text-column">
"A sleek, modern train glides effortlessly over a towering steel bridge. The polished exterior of
the train reflects the golden hues of the setting sun. The bridge, an architectural marvel, spans a
deep, verdant valley, with lush forests and a winding river far below. As the train moves, its
rhythmic clatter harmonizes with the distant calls of birds and the gentle rustling of leaves. The
majestic bridge stands silhouetted against a vibrant, twilight sky, as the train continues its
journey into the horizon."
</div>
<div class="text-column">
"A sleek white sailboat glides gracefully across a calm, azure sea, its sails billowing gently in
the breeze. Above, a silver airplane soars through a clear blue sky. The boat's hull reflects the
sunlight, creating a shimmering effect on the water's surface. The airplane, seen in a high-altitude
flyover, casts a shadow that momentarily aligns with the boat's path, creating a fleeting connection
between sea and sky. The scene is captured in a wide shot, ensuring both the boat and airplane are
prominently centered, emphasizing their contrasting yet harmonious presence in the vast expanse."
</div>
<div class="text-column">
"A group of silver-colored fish with darker fins swim among green aquatic plants in an aquarium
setting. The fish move gracefully through the water, navigating around the plants, which are of
various sizes and shades of green. The aquarium environment is designed to mimic a natural habitat,
with rocks and shadows in the background contributing to the underwater scene."
</div>
</div>
</div>
</div>
<div class="content long_video">
<div class="title">Long Video Generation Comparison</div>
<div class="video-row">
<div class="video-column">
<div class="label_method">StreamingT2V</div>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';"
src="./asserts/streamt2v_long/a dog drinking water.mp4"></video>
</div>
<div class="video-column">
<div class="label_method">FreeNoise</div>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';"
src="./asserts/freenoise_long/a dog drinking water.mp4"></video>
</div>
<div class="video-column">
<div class="label_method">OpenSora</div>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';"
src="./asserts/opensora_long/a dog drinking water.mp4"></video>
</div>
<div class="video-column">
<div class="label_method">LanDiff</div>
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';"
src="./asserts/LanDiff_long/a dog drinking water.mp4"></video>
</div>
</div>
<div class="text-column_line">
"a dog drinking water."
</div>
<div class="video-row">
<div class="video-column">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';"
src="./asserts/streamt2v_long/a boat accelerating to gain speed.mp4"></video>
</div>
<div class="video-column">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';"
src="./asserts/freenoise_long/a boat accelerating to gain speed.mp4"></video>
</div>
<div class="video-column">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';"
src="./asserts/opensora_long/a boat accelerating to gain speed.mp4"></video>
</div>
<div class="video-column">
<video controls autoplay playsinline muted loop
onloadeddata="this.style.display='block'; this.previousElementSibling?.style.display='none';"
src="./asserts/LanDiff_long/a boat accelerating to gain speed.mp4"></video>
</div>
</div>
<div class="text-column_line">
"a boat accelerating to gain speed."
</div>
<div class="video-row">
<div class="video-column">
<video controls autoplay playsinline muted loop