New ideaOpen-source consumer media discovery

CommunityTube (new HBV repo, working name)

An open-source generator that turns any community's comment history (a subreddit, TabNews, a Discord export, a forum) into a HackerTube-style site of the videos that community keeps recommending, with a hosted version and sponsor slots as derivatives.

1 week ago · Scored 4 Nov 2026 · ID HBV-261104-H01

Working title: CommunityTube (new HBV repo, working name): make a HackerTube for any community in one command

Summary

BriefingVerifiedHypothesis

POP 5.6 slot: a NEW repo HBV would launch on GitHub (cesarx2) to go viral and earn from derivatives. Template proof: Karpathy's HackerTube (a YouTube-style site of 6,454 videos recommended in 39,834 Hacker News comments) reached 2,863 points and 634 comments on Hacker News (Verified, HN page) within days of 2026-10-31, and its data export invited copies.…

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Copies so far all target Hacker News itself (books, Chinese, personal versions); a single command that does the same for ANY community was not found in two searches (limited verification, Hypothesis). Hook: 'r/yourcommunity, as a YouTube'. Every community that gets its own Tube is a share. Derivatives: hosted 'make your Tube' (subscription), sponsor slots on each Tube priced up with traffic, PT-BR/ES communities (TabNews, Brazilian and Mexican subreddits). Risk: the trend is days old and clone-heavy, so a launch must happen within about a week.

Description

Repo concept (GitHub cesarx2/community-tube): a pipeline (comment dump in, labelled recommendations out, static site built with Next.js on Vercel) with adapters for Reddit data exports, Hacker News, TabNews, Discord/Telegram exports and any CSV of comments. Steps: collect comments, keep those that recommend a YouTube v…

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ideo using an LLM stance label (recommend, cite, joke, criticise) as Karpathy describes, require several distinct recommenders over several months to drop one-off drive-bys (the HackerTube method as described by third parties), write a short card per video, group by topic, and render a no-login YouTube-style site where the thumbnail is a middle frame and the state lives in the browser. Playback uses the privacy-enhanced YouTube embed; no video files are hosted. Global Application: any community with a link-sharing culture can have its own Tube. LatAm Version: TabNews, r/brasil, r/mexico, Brazilian football and gaming subreddits first, PT-BR/ES interface.

Target customer

Community admins, creators and developers in Brazil, Mexico and English-speaking communities who share videos in comments

Pain

Great recommendations are buried in old comment threads; algorithmic feeds are full of slop

Why this score

Why it scored lower: Trend fades and platform terms

MoatHypothesis

First generator + local communities + sponsor slots. Early open-source position, PT-BR/ES community packs and a gallery of Tubes people share. Code is trivially forkable; the moat is speed, the gallery of Tubes and contributor adapters. Hypothesis.

Demand signals

X posts (7 days)

n/a

Signal trend

n/a

Web demandVerified

HackerTube 2,863 HN points and 634 comments (Verified); multiple copies within four days (Verified existence).

Market and competitors

TAMHypothesisEstimate

$1B+ (Hypothesis) — Creator and community discovery products where taste is curated by a trusted group. Method: Order-of-magnitude hypothesis, not a sourced report. Sources: Hark estimate (Hypothesis).

SAMHypothesisEstimate

$20M (Hypothesis) — Communities and creators willing to pay for a branded Tube or sponsors on it. Method: ~50K active communities x ~2% paying x ~$20/month x 12 ≈ $240K near term; $20M ceiling with sponsors. Sources: Hark estimate (Hypothesis).

SOMHypothesisEstimate

$24K ARR (Hypothesis) — 12 months after traction. Method: ~100 hosted Tubes x ~$20/month x 12 ≈ $24K; depends entirely on repo traction. Sources: Hark estimate (Hypothesis).

Competitors

hackertube.org itself, HackerBooks, HN Tube, hackertube-personal, YouTube playlists and community wikis

Business model

Monetization

Open-core: MIT repo; hosted generator, sponsor slots priced up with traffic, paid community packs

Revenue hypothesis (monthly)Hypothesis

Base ~$2K/month, conservative ~$0/month at 12 months (Hypothesis).

Jobs to be done

When my community keeps recommending videos in comments I will never re-read, I want a clean Tube of what they actually recommend, so I can watch trusted picks instead of the algorithm.

HXC

Lucas · 29 · Recife: Active in two Brazilian developer and gaming communities, tired of algorithmic feeds, saves links recommended by people he trusts. Frustration & buying signal: Wants the community's best videos in one place; would star a repo and might pay for a hosted version.

Build and go-to-market

Tech stack

Cursor + Vercel + GitHub cesarx2 (one repo); Supabase; Stripe

GTM channels

HN, Reddit and dev.to launch with faceless assets, a gallery of community Tubes, PT-BR/ES SEO pages; no founder on camera, no paid ads

Risks

Main risk

Trend fades and platform terms

All risks

Value Risk: Attention — Interest in HackerTube may fade within weeks. Next: Launch inside seven days. | Usability Risk: Attention — Non-technical community admins cannot run a generator. Next: Hosted 'paste your community link' version. | Feasibility Risk: Supported — Small codebase; embeds rely on YouTube's player.…

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Next: Prototype on TabNews data. | Viability Risk: Elevated — Platform terms for community data and sponsor revenue are unproven. Next: Legal read on Reddit and Discord data; sponsor outreach only with Cesar's approval.

Next validation step

Prototype on TabNews data; read Reddit/Discord data terms; star-check comparable repos

Sources

news.ycombinator.com https://karpathy.bearblog.dev/hacker-tube/ https://hn.shiftedbits.org/story/50326821 https://hntube.app/guides/what-is-hackertube/ https://blog.getrealpha.com/en/blog/hackertube-zh-curated-youtube-2026-11/ https://github.com/flychicken067/hackertube-personal https://stacker.news/items/1606220 https://bytesprint.io/blog/hacker-news-video-recommendations

github-new, below-bar, open-source, media-discovery, community, idea, new

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# Briefing: CommunityTube (new HBV repo, working name): make a HackerTube for any community in one command

Source: Startup Ideas HQ (HB Ventures), found 2026-11-04. ProductBots Opportunity Score: 64/100, evidence confidence 35%.
Evidence labels (Verified, Self-reported, Hypothesis) are kept as written by the researcher.

## Goal for ProductBots.ai
Turn this idea into a validated MVP plan and a first build. Start from the next validation step; do not assume unlabelled numbers are verified.

## What it is
An open-source generator that turns any community's comment history (a subreddit, TabNews, a Discord export, a forum) into a HackerTube-style site of the videos that community keeps recommending, with a hosted version and sponsor slots as derivatives.

POP 5.6 slot: a NEW repo HBV would launch on GitHub (cesarx2) to go viral and earn from derivatives. Template proof: Karpathy's HackerTube (a YouTube-style site of 6,454 videos recommended in 39,834 Hacker News comments) reached 2,863 points and 634 comments on Hacker News (Verified, HN page) within days of 2026-10-31, and its data export invited copies. Copies so far all target Hacker News itself (books, Chinese, personal versions); a single command that does the same for ANY community was not found in two searches (limited verification, Hypothesis). Hook: 'r/yourcommunity, as a YouTube'. Every community that gets its own Tube is a share. Derivatives: hosted 'make your Tube' (subscription), sponsor slots on each Tube priced up with traffic, PT-BR/ES communities (TabNews, Brazilian and Mexican subreddits). Risk: the trend is days old and clone-heavy, so a launch must happen within about a week.

## Customer and pain
Target customer: Community admins, creators and developers in Brazil, Mexico and English-speaking communities who share videos in comments
Pain: Great recommendations are buried in old comment threads; algorithmic feeds are full of slop

## Market and competitors
TAM: $1B+ (Hypothesis) — Creator and community discovery products where taste is curated by a trusted group. Method: Order-of-magnitude hypothesis, not a sourced report. Sources: Hark estimate (Hypothesis).
SAM: $20M (Hypothesis) — Communities and creators willing to pay for a branded Tube or sponsors on it. Method: ~50K active communities x ~2% paying x ~$20/month x 12 ≈ $240K near term; $20M ceiling with sponsors. Sources: Hark estimate (Hypothesis).
SOM: $24K ARR (Hypothesis) — 12 months after traction. Method: ~100 hosted Tubes x ~$20/month x 12 ≈ $24K; depends entirely on repo traction. Sources: Hark estimate (Hypothesis).
Competitors: hackertube.org itself, HackerBooks, HN Tube, hackertube-personal, YouTube playlists and community wikis
Geography: Global except China; Brazil and Mexico communities first

## Business model
Monetization: Open-core: MIT repo; hosted generator, sponsor slots priced up with traffic, paid community packs
Revenue hypothesis (monthly): Base ~$2K/month, conservative ~$0/month at 12 months (Hypothesis).

## Build and go-to-market
Build effort (agent-weeks): 2
Time to first revenue: 6-8 weeks (derivative revenue)
Tech stack: Cursor + Vercel + GitHub cesarx2 (one repo); Supabase; Stripe
GTM channels: HN, Reddit and dev.to launch with faceless assets, a gallery of community Tubes, PT-BR/ES SEO pages; no founder on camera, no paid ads

## Risks and next step
Main risk: Trend fades and platform terms
Next validation action: Prototype on TabNews data; read Reddit/Discord data terms; star-check comparable repos

## Sources
https://news.ycombinator.com/item?id=50319510 https://karpathy.bearblog.dev/hacker-tube/ https://hn.shiftedbits.org/story/50326821 https://hntube.app/guides/what-is-hackertube/ https://blog.getrealpha.com/en/blog/hackertube-zh-curated-youtube-2026-11/ https://github.com/flychicken067/hackertube-personal https://stacker.news/items/1606220 https://bytesprint.io/blog/hacker-news-video-recommendations

Research, not investment advice. Numbers keep the label they were published with.

Summary

Briefing✓Verified○Hypothesis

Description

Target customer

Pain

Why this score

Moat○Hypothesis

Demand signals

X posts (7 days)

Signal trend

Web demand✓Verified

Market and competitors

TAM○Hypothesis≈Estimate

SAM○Hypothesis≈Estimate

SOM○Hypothesis≈Estimate

Competitors

Business model

Monetization

Revenue hypothesis (monthly)○Hypothesis

Jobs to be done

HXC

Build and go-to-market

Tech stack

GTM channels

Risks

All risks

Next validation step

Sources

BriefingVerifiedHypothesis

MoatHypothesis

Web demandVerified

TAMHypothesisEstimate

SAMHypothesisEstimate

SOMHypothesisEstimate

Revenue hypothesis (monthly)Hypothesis