Day 29/75 Build Text-to-Video AI with LLM [Explained] OpenAI SORA Stable Diffusion VideoPoet Runway

FreeBirds Crew - Data Science and Generative AI
24 Feb 202411:29

Summary

TLDRこのビデオでは、OpenAIとGoogleが開発したテキストからビデオを生成するAI技術、特にOpenAIのSoraとGoogleのVideo Poetについて紹介しています。テキストからビデオへの変換の仕組み、それがテキストから画像への変換とどう異なるか、そしてその分野での研究論文についても触れています。また、AIがフレームごとの画像を生成し、それらを組み合わせてビデオを作成する過程や、この技術の背後にある計算上の課題とその解決策についても説明しています。さらに、安定拡散モデルを用いたビデオ生成のデモンストレーションを行い、視聴者が自身でテキストからビデオへのAIアプリケーションを構築する方法を案内しています。

Takeaways

  • 🚀 OpenAIが「Sora」というテキストからリアルなビデオを生成するAIをリリースした。
  • 🔍 テキストからビデオを生成するAIの仕組みは、テキストを分析し、画像のシーケンスを生成してビデオを作成する。
  • 📖 テキストから画像へのモデルとテキストからビデオへのモデルの違いについて学ぶことができる研究論文が存在する。
  • 🌐 Googleも「Video Poet」という自社のテキストからビデオを生成するAIを開発している。
  • 💡 テキストからビデオへの変換は、フレーム間の時間的および空間的な依存関係を管理することで計算上の課題がある。
  • 🤖 過去2年間で、VQ-GANやXMC-GANなど、多くのテキストから画像への言語モデルが登場している。
  • 🎨 新しいAIモデルでは、GPT-3のようなトランスフォーマーアーキテクチャを利用して高品質な画像やビデオを生成している。
  • 📚 「FAKIE」などのモデルは、プロンプトのシーケンスに基づいて任意の長さのビデオを生成できるが、公開されていない。
  • 🌟 テキストからビデオへのモデルは、現在、Diffusionモデルや「Runway」と「Text to Video Zero」によって支配されている。
  • 👩‍💻 Pythonコードを使って、Diffusionベースのモデルを使用し、プロンプトからビデオを生成する方法を示す。

Q & A

  • Sora AIとは何ですか?

    -Sora AIはOpenAIによって最近リリースされた、プロンプトからリアリズムのある画像やビデオを生成できるテキストからビデオへのAIです。

  • GoogleのテキストからビデオへのAIの名前は何ですか?

    -GoogleのテキストからビデオへのAIは「Video Poet」と呼ばれています。

  • テキストからビデオモデルはどのように機能しますか?

    -テキストからビデオモデルは、与えられたテキストを分析し、それに基づいて複数のフレームを生成してビデオを構築します。

  • テキストから画像モデルとテキストからビデオモデルの主な違いは何ですか?

    -テキストからビデオモデルは、テキストから画像モデルに比べて、時間的な依存関係を考慮して複数の連続するフレームを生成する必要があり、より高い計算コストがかかります。

  • テキストからビデオ生成における主な課題は何ですか?

    -主な課題には、高い計算コスト、高品質なデータセットの欠如、ビデオの説明の曖昧さが含まれます。

  • 「Faki」とは何ですか?

    -「Faki」は、プロンプトのシーケンスに基づいて任意の長さのビデオを生成できる高度なテキストからビデオへの生成モデルですが、公には利用できません。

  • 「Runway」と「Text to Video Zero」の重要性は何ですか?

    -これらは、テキストからビデオ生成業界をリードする、革新的なモデルであり、高品質で文脈豊かなビデオ生成に寄与しています。

  • テキストからビデオのAIモデルを使用する際の主な利点は何ですか?

    -主な利点には、ユーザーがプロンプトを通じてリアリスティックなビデオを簡単に生成できること、さまざまな用途に応じたカスタマイズ可能なビデオ生成が可能であることが含まれます。

  • テキストからビデオ生成における「Transformerアーキテクチャ」の役割は何ですか?

    -Transformerアーキテクチャは、テキストからビデオ生成の研究で採用され、より高品質な画像生成に貢献しています。

  • テキストからビデオ生成において、なぜ高品質なデータセットが重要なのですか?

    -高品質なデータセットは、AIがより正確でリアリスティックなビデオを生成するための学習素材を提供するため、重要です。

Outlines

00:00

🚀 テキストからビデオへのAI変換技術の紹介

このパラグラフでは、Soraという名前のAIによって生成されたリアルな映像の紹介から始まり、テキストからビデオへのAIアプリケーションの構築方法、テキストからビデオへのモデルの仕組み、および関連する研究論文について説明します。オープンAIとGoogleが提供するテキストからビデオへの技術の進歩に触れ、これらの技術がどのようにしてリアルなビデオを生成するか、またテキストからイメージへの変換との違いについても論じています。テキストからビデオへのモデルは、言語モデルを利用してテキストを分析し、連続する画像を生成することでビデオを作成します。このセクションでは、テキストからビデオへの変換の複雑さと、テキストからイメージへの変換との比較、およびこの分野で使用されるGANアーキテクチャやトランスフォーマーモデルの進歩についても触れられています。

05:02

🔍 テキストからビデオへの変換技術の詳細

このパラグラフでは、テキストからビデオへのAIモデルの能力と限界について詳しく説明しています。特に、これらのモデルが生成するビデオの解像度の低さや短い範囲、限定的な動きに焦点を当てています。新しいAIモデルの登場により、トランスフォーマーアーキテクチャを採用したビデオ生成技術が向上し、高品質な画像生成が可能になりました。また、Fakiというモデルが長時間のビデオ生成において特に注目されていますが、その利用にはライセンスが必要であること、そしてテキストからビデオへの変換技術の第三波としての拡散モデルの成功について説明しています。さらに、このパラグラフでは、Pythonコードを使用して、テキストからビデオを生成するプロセスの実践的なデモンストレーションを提供しています。

10:05

🎨 テキストからビデオ生成への応用と展望

最終段落では、テキストからビデオへの変換技術の具体的な使用例を紹介しています。具体的には、スパイダーマンがサーフィンをしているビデオを生成するために、テキストプロンプトを使用したデモンストレーションのプロセスを説明しています。このデモンストレーションでは、25フレームのビデオを生成するためのPythonコードと、その実行方法について詳しく説明しています。また、テキストからイメージ生成技術の背後にあるアーキテクチャについての今後のビデオでの議論の予告も含まれており、視聴者がプロンプトエンジニアリング、機械学習、データサイエンスについてさらに学ぶためのリソースも紹介しています。

Mindmap

Keywords

💡diffusion models

Diffusion models are a type of generative model used in text-to-video generation research. They involve 'diffusing' or randomly modifying an initial image, then reversing the process to generate new images. Diffusion models like DALL-E 2 and Stable Diffusion have shown impressive results in creating realistic images from text descriptions. The video discusses using them to also create high quality video frames from text that can then be stitched into video.

💡video frames

Video frames refer to the individual still images that comprise a video when played in sequence. The text-to-video models work by generating multiple video frames from a text prompt, then combining those frames into a short video that matches the description. Things like motion and temporal consistency need to be accounted for when generating multiple frames as opposed to a single image.

Highlights

OpenAI released a powerful text-to-video AI called Sora that generates realistic images from prompts

This video explains how text-to-video AI models work by analyzing text prompts and generating sequences of images that are combined into video

Key challenges for text-to-video generation include computational complexity, lack of quality training data, and difficulty describing complete videos with text

Transformer architectures like VideoGPT have enabled more advanced text-to-video generation with higher quality and longer videos

Diffusion models like Stable Diffusion are now being adapted for text-to-video tasks with remarkable success

Transcripts

play00:00

hello guys and welcome to Free biru and

play00:01

welcome to 75 day hard Genera learning

play00:04

Challenge and this j29 and open I just

play00:07

released this text to video AI that is

play00:10

named as Sora it generate the realistic

play00:12

images out of your Proms and you can see

play00:15

this the car racing video that it is so

play00:18

realistic that it is very hard to

play00:21

differentiate it from the real video

play00:23

okay so in this video I will tell you

play00:25

about how you can build your own text to

play00:28

video artificial Det apps and how this

play00:31

text to video models actually work and

play00:34

we will uh learn about many kind of

play00:37

research papers that that you can read

play00:39

on text to video models as well and text

play00:43

to images are how different from this

play00:46

text to video models okay so let's get

play00:48

started so very first thing is we going

play00:51

see this the open AI just puted a post

play00:54

on the X that can shows that how you can

play00:57

with the help of a small prompt you

play00:59

create a complete realistic video and on

play01:01

the open eyes website you can also see

play01:04

this that it just creates a realistic

play01:07

videos out out of your prompts and with

play01:10

the help of that you can like build a

play01:12

whole picture or build a whole series or

play01:14

videos out of it and it it is just

play01:17

really amazing but the Google is also

play01:20

not left behind the Google also have its

play01:24

own uh text to video AI that is called

play01:27

video poet with the help of video poet

play01:29

you can generate the zero short video

play01:32

generation so zero short I already

play01:34

explained in my past videos it means

play01:36

without any examples you can generate

play01:39

these kind of realistic or futuristic uh

play01:42

videos out out of your text or you can

play01:45

also generate the audio from the video

play01:48

as well use it and let me know how you

play01:51

can build your different different kind

play01:53

of things out of video Point okay so now

play01:58

now how actual this text Tex to video AI

play02:00

work so when you give him a prompt okay

play02:04

or a text it just analyze that text with

play02:07

the help of this lar language models

play02:09

that are working behind uh this whole

play02:11

text to video Ai and then it generates

play02:14

the sequence of images the sequence of

play02:17

images means it can generate the images

play02:20

frame by frame and with the help of

play02:22

those multiple frames it combine them

play02:25

and build a whole video so that's the

play02:27

whole like a behind working of this text

play02:31

to video artificial intelligence models

play02:34

okay now let's first talk about what is

play02:36

the difference between this text to

play02:38

video and text to image artificial

play02:41

intelligence models so in the last 2

play02:44

years we see many text to image Li

play02:47

language models like VQ gan xmc gan Goan

play02:51

and many kind of Gan architectures are

play02:53

there okay so these were quickly

play02:56

followed by the open AI massively

play02:59

powerful Transformer based model that is

play03:01

called D and with the help of d e a new

play03:05

wave of diffusion models occur with the

play03:08

help of stable diffusion okay and the

play03:11

huge success of stable diffusion led to

play03:14

many productionize diffusion models

play03:16

called like uh runaway ML and also the

play03:19

mid Journey that you already know that

play03:22

you can use this mid journey to create

play03:24

realistic images as well okay now so

play03:28

despite the impressive capabilities of

play03:30

the diffusion models in the text to

play03:33

image generation text to video

play03:35

generation is quite hard because it

play03:37

faces many challenges as well the first

play03:40

challenge is computational challenges

play03:42

ensuring the special and the temporal

play03:45

dependencies across the frames of the

play03:47

images it can have a high computational

play03:50

cost okay so you can't even like train

play03:53

those models on a large am of video data

play03:56

sets and there are like lack of high

play03:58

quality data sets as as well okay and

play04:01

the vagueness around the video

play04:03

captioning because describing videos in

play04:06

a way that makes the model it is easier

play04:09

to like build a video out of it it is

play04:11

very hard as well so more than a single

play04:14

shot text prompt is required to provide

play04:17

a complete video description so in that

play04:19

way your tokal length is also getting

play04:22

increased okay but but these kind of all

play04:26

the challenges are now solved okay now

play04:29

these ches can be easily solved with the

play04:32

help of diffusion models or like many

play04:34

other kind of uh Gan or VA based models

play04:38

as well okay so those models will work

play04:41

in the same way it can take out your

play04:44

prompt or the caption as well you can

play04:46

Port it in the Gan or the v's

play04:48

architectur then it generate the

play04:50

different different frames of your

play04:53

caption and then combine it to form a

play04:55

video okay so if I just give you this

play04:59

example that that these generated videos

play05:02

or images are not like completely uh

play05:05

high quality because those are like low

play05:08

resolution videos those are short range

play05:10

videos and those are isolated or

play05:12

singular motion videos only so uh let me

play05:15

just show you an example that how the

play05:17

past videos are getting created so if I

play05:20

just give him a prom that D6 is moving

play05:23

up and down from the mnist data set here

play05:27

then it just generate the multiple

play05:28

frames of of the digit six moving in a

play05:32

particular direction and similarly if I

play05:34

talk give him another prompt that is

play05:36

digit 7 is left and right and the digit

play05:40

five is up and down so in that way it

play05:43

have to make multiple prompts out of it

play05:45

as well to build a complete video but

play05:48

these prompts give the uh very low

play05:51

resolution or very uh short range videos

play05:54

only okay but but with the help of new

play05:59

AI models like gpt3 the next surge of

play06:02

text2 video generation research adopted

play06:05

Transformer architectures so with with

play06:07

the help of Transformer architecture a

play06:10

new kind of uh Transformer based models

play06:13

like video GPT which is inspired from

play06:16

the gpt3 uh architecture it generates

play06:20

the realistic images with the help of

play06:22

your prompts as well okay and those

play06:25

images are completely high quality

play06:28

images as well okay and the next is our

play06:31

uh faki the faki is like a very amazing

play06:34

text to image generation model that it

play06:37

can generate the images which are like

play06:40

so good faki is particularly interesting

play06:43

as it enables generating the arbitrary

play06:46

long videos conditioned on a sequence of

play06:48

prompt in a way it is a storyline so

play06:52

with the help of faki you you can create

play06:54

long length videos out of it but the

play06:57

main drawback is faki is not

play07:00

publicly available so if you want to use

play07:02

faki you have to get the license to use

play07:05

it okay but the story is not ending here

play07:09

as well we have the third wave the third

play07:12

wave is the text to video based models

play07:14

are the diffusion based models so the

play07:17

remarkable success of diffusion models

play07:19

is diverse hyperrealistic and contextual

play07:23

Rich image generation that led to the uh

play07:26

text to video generation models as well

play07:30

the very first kind of these models are

play07:32

like runaway and text to video Zero

play07:36

these two models are like ruling the

play07:38

text to video industry right now okay

play07:41

but with the uh rise of the Sora AI from

play07:45

the open AI uh their future might be in

play07:49

danger as well because Sora AI is just

play07:51

amazing okay you can like read out those

play07:54

research papers as well which I am

play07:56

showing in this video in my video link

play07:59

description as well guys so these

play08:02

researches are like very very important

play08:04

because it h it shows you that how these

play08:07

text to video L language models are

play08:10

created uh diffusion based models as

play08:12

well okay so now now the very best thing

play08:16

is like I have to show you that how you

play08:18

can like use this diffusion based Li

play08:22

language model to generate your own

play08:25

video with the help of your prompt okay

play08:27

so let's get started with the python

play08:29

code in which I show you how you can use

play08:32

the diffusion based models as well guys

play08:35

all guys so here is the stable diffusion

play08:37

code is here I install the stable

play08:39

diffusion library with the help of

play08:40

Transformers accelerate and torch I

play08:43

already explained what these libraries

play08:46

will do in my past videos you can check

play08:47

out I will put the link in the

play08:49

description as well and then I load the

play08:52

torch library for the pytorch and from

play08:54

the diffusers I import the diffuser

play08:56

Pipeline with the help of multi-step

play08:58

scheduler to generate the multiple

play09:01

frames of the images and then at the end

play09:04

export those frames into the image okay

play09:07

so this is how it completely works it

play09:10

takes the text and then it just first do

play09:14

the clip objective then it do do the

play09:16

prior thing as well so with the help of

play09:19

that we have this prompt a corgi playing

play09:22

a flame throwing trumpet with the help

play09:24

of that he has already seen a image on

play09:28

that it just generate the image on the

play09:30

base of our prompt here in that way it

play09:33

completely like uh do the uh text to

play09:37

video generation so this kind of a flame

play09:40

is actually going away this kind of a

play09:42

trumpet is also playing as well in the

play09:45

video as well okay okay so very first

play09:48

thing I just get the text to video Live

play09:50

Language model here on the float 16

play09:53

variant and then I just set up my schuer

play09:58

here and then on the CPU offload because

play10:01

I want to uh do this task only on my CPU

play10:04

I can also do it on the GPU if I just

play10:07

accelerate it from here okay then I give

play10:11

it a prompt that Spider-Man is surfing

play10:14

okay and then I pass this prompt into my

play10:17

pipeline here and I give them the

play10:20

inference steps that how many frames

play10:22

that it can generate can generate 25

play10:25

frames and with the help of this video

play10:27

frames I can port to video and the video

play10:30

is getting generated here okay so let me

play10:33

just run this hole and to show you that

play10:35

how it actually works here it is so

play10:37

that's how it completely shows that your

play10:40

text to video generation Spider-Man is

play10:43

suffering is completely shown in this

play10:45

video so these are our 25 frames only

play10:49

okay okay so I hope you guys completely

play10:52

understand that how this text2 video

play10:55

library will work and in our next video

play10:58

I will talk about about the text to

play11:00

image generation that how you can

play11:03

understand that the behind architecture

play11:05

of the text to image generation and with

play11:07

the help of diffusion based models we'll

play11:09

learn about the multiple diffusion based

play11:12

models on multiple kind of image

play11:13

generation task as well okay so just be

play11:16

with it if you want to know about the

play11:18

prompt engineering machine learning data

play11:20

science you can watch my YouTube videos

play11:22

and also read my blogs on medium we'll

play11:24

meet in our next video thank guys thank

play11:26

you so

play11:27

much

Rate This

5.0 / 5 (0 votes)

Do you need a summary in English?