Embed README example video

[Alek99]

Summary

• Replace the long README image generation example walkthrough with a centered video player.
• Add a short generic explanation of building an image generation app with Reflex.
• Use the uploaded GitHub attachment video URL so README preview renders the video.
• Add a static poster image fallback so PyPI-style renderers still show a visual preview when <video> is stripped.
• Remove the committed MP4 asset from the branch.

Validation

• Ran git diff --check.
• Verified GitHub Markdown rendering through gh api markdown; the attachment URL produces a native <video> element.
• Verified PyPI-style rendering with readme_renderer.markdown; the sanitized output preserves the linked poster <img> fallback.

[codspeed-hq]

Merging this PR will not alter performance

✅ 24 untouched benchmarks
⏩ 2 skipped benchmarks¹

---

_{Comparing codex/readme-video-example (f0cc48d) with main (c3c720f)²}

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on main (39c74cb) during the generation of this report, so c3c720f was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[greptile-apps]

Greptile Summary

This PR replaces the extended DALL-E walkthrough section in README.md — which included a GIF, full Python source code, and a section-by-section breakdown — with a single prose sentence and an HTML <video> embed pointing to a GitHub user-attachment URL.

• The <video> element uses the correct GitHub CDN format (github.com/user-attachments/assets/…) with controls and muted attributes, and provides a text-link fallback inside the tag for non-supporting environments.
• The prior <img> tag used raw.githubusercontent.com which renders universally; the replacement <video> tag is sanitized by PyPI's HTML allowlist, so visitors from PyPI will only see the fallback link text rather than any visual content.
• All detailed educational content (complete source code, UI/State/Event Handler/Routing explanations) is removed; this is an intentional scope change described in the PR.

Confidence Score: 4/5

Safe to merge on GitHub where the video renders natively; the only degradation is on PyPI where the <video> tag is stripped and only the fallback text link is shown.

The change is confined to README documentation with no code impact. The video embed works as intended on GitHub, and a text fallback exists. The main trade-off is that the PyPI project page — previously showing the animated GIF — will now show only a plain hyperlink.

README.md — specifically how the <video> block renders on PyPI and other non-GitHub Markdown hosts.

Important Files Changed

Filename	Overview
README.md	Replaces the detailed DALL-E code walkthrough (GIF + full Python source + section-by-section breakdown) with a one-liner and an HTML <video> embed; the <video> tag is stripped by non-GitHub Markdown renderers such as PyPI, leaving only the fallback text link.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[User views README] --> B{Renderer}
    B -->|GitHub.com| C[Native video player rendered with controls + muted]
    B -->|PyPI / other registries| D[video tag stripped by sanitizer]
    D --> E[Fallback anchor text shown: Watch the Reflex image generation example video.]
    B -->|Raw Markdown tools e.g. pandoc VS Code| F[HTML block passed through - behavior depends on tool]

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_{Reviews (1): Last reviewed commit: "Make README video description generic" | Re-trigger Greptile}

[greptile-apps]

<video> tag stripped on non-GitHub renderers

The original <img src="https://raw.githubusercontent.com/..."> renders everywhere (GitHub, PyPI, npm registry, offline Markdown tools). The new <video> tag is sanitized out by PyPI's HTML allowlist, so visitors arriving from the PyPI project page will only see the fallback anchor text Watch the Reflex image generation example video. — no visual. Consider keeping a static poster image (e.g. a thumbnail from the GIF) as a visible fallback, or verifying whether PyPI display matters for this repo.

[adhami3310]

vidoes don't seem to be supported on pypi, if you would like, you can do a GIF/APNG instead