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DEV's Worldwide Show and Tell Challenge Presented by Mux: Pitch Your Projects! $3,000 in Prizes. 🎥

Jess Lee on December 03, 2025

We are so thrilled to introduce DEV's Worldwide Show and Tell Challenge presented by Mux! Running through January 4, this challenge invites you t...
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Peter Kim Frank The DEV Team

Can't wait to see everyone's projects ⭐️

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Noah Brinker The DEV Team

Excited to see what everyone creates!

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Dave Kiss

New year, new you - let this be the year you WILL tell people about the thing you're working on 😅

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sharon oliva

I think challenges like this are great for motivation. Even if you do not win sharing your project with the dev community is valuable. I might just give it a shot!

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Arsey Kun • Edited

Agreed

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Gift Trust

I have something ready for the real world developers and deployment.
It's called MODAC - Modern Day Agentic Commerce. It's a sovereign security framework designed to govern Agentic Commerce cloud atmosphere. I have the complete Algorithm backend

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Arsey Kun

Just submitted brillant Africa2G, what a good way to learn pitch, win or not, i've learned a thing or two

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Arsey Kun • Edited

Just submitted BrilliantAfrica2G. This is gonna be amazing win or not i have learned sth atleast

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Stephendache

LFG

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Bhrunten

Can't wait to see others projects

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Maame Afua A. P. Fordjour

Looking forward to see what people build! Good luck to everyone.

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Georgel

Where can I see other people's projects?

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Ekong Ikpe

Same question on my mind. Any luck yet seeing what others have done?

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Azeem Teli

Let this be the year you finally tell people about the thing you’ve been quietly building 😅

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Jess Lee The DEV Team

💯

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Ben Halpern The DEV Team

Good luck!

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Dylan Jhaveri

Looking forward to seeing what people are hacking on over the holidays!

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uratmangun

what is this Video Semantic Search - Supa Search ? is this using supabase?

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Jess Lee The DEV Team

@uratmangun here's more info:

Getting Started

Make sure you've added all .env vars required before proceeding

Requirements

  • Docker desktop
  • Deno curl -fsSL https://deno.land/install.sh | sh

Install dependencies

npm install

and

deno install

Serving the application

First, start the Supabase database.

npx supabase start
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If this is your first time running this command, your container layers will download. This takes a second, so go grab some water - you're dehydrated.

Next, open a new terminal tab and serve your Supabase functions locally:

npx supabase functions serve
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Next, open a third tab and start the Inngest queue server:

npx inngest-cli@latest dev
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Finally, run the Next.js development server:

npm run dev
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Open localhost:3000 with your browser to see the result.

Seeding the database

npm run mux-backfill
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Create the video embeddings

This will run the createEmbedding function for each asset in our database

npm run videos-backfill-existing # All assets
npm run videos-backfill-missing  # Only assets with missing embeddings
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Joshua Alphonse

Take a shot and show us what you got! We're eager to see how creative everyone is.

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Antoni Neutron

Love this idea

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Bharathkumar

I'm in.

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Neweraofcoding

Nice looking forward to it!

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Ibrahim Pima

nice to be apart of this contest

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Ekong Ikpe

With all pleasure Gnoke Station 🤞

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Amit Joiya

Excited ✌️✌️

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Viktar Davidovich

I'm in

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TattooedLowLife

So glad I found this!!

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Aloof

I won't miss this one.

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jackeliot

I look forward to seeing everyone's work; I'm sure it will be amazing!

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Destroyer

This should be fun! :)

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Adilson Rafael

Let's start it

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BIG One

One question: is this only for Apple Store platforms? Is it valid for Android?

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BIG One

?

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Fady Desoky Saeed Abdelaziz

So excited ✨️