Calorie Restriction Guide: Science-Backed Benefits, Risks, and How to Do It Right

https://reddthat.com/post/60328324

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🎥 Video
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Executive summary: A technical demonstration walks through converting arbitrary files into video containers for storage on YouTube. The project documents practical constraints (YouTube file/length limits, metadata stripping, and aggressive transcoding) and presents a workflow combining chunking, integrity checks, and forward error correction to enable file reconstruction after upload.

Technical details:
• Encapsulation: The workflow targets standard video containers and uses video and audio tracks as the durable carriers because YouTube strips most metadata and can reject subtitle payloads.
• Integrity checks: Uses multiple CRC flavors to detect corrupted chunks prior to reconstruction.
• Forward error correction: Implements Wirehair (an O(N) fountain code) to create redundant symbols so that the original file can be recovered despite dropped or heavily altered chunks during YouTube transcoding.
• Encoding channel: Embeds payload bits into transform-domain coefficients — specifically leveraging the Discrete Cosine Transform (DCT) used by common codecs — to hide data within compressed frames while balancing capacity and survivability.

Implementation concepts:
• Chunking strategy: Files are split into chunks sized to fit per-video capacity limits (YouTube supports up to 256 GB or 12 hours), then encoded into frames or audio payloads with added FEC symbols.
• Hybrid error-proof algorithm: Combines CRC validation for corruption detection with fountain-code-based redundancy for recovery of missing symbols.
• Codec selection: Emphasizes that codec choice and compression aggressiveness materially affect recoverability; lower-loss codecs and control of quantization on DCT coefficients increase success rates.

Use cases and limitations:
• Practical use cases include long-term archival of very large files and covert transport where traditional storage is unavailable. The approach is constrained by platform policy, upload limits, potential content removal, and the non-deterministic nature of platform transcoding pipelines.

Detection and considerations:
• Detection vectors are platform-specific; artifacts include atypical frame-level entropy patterns and persistent non-media payloads in transform coefficients. The talk notes that subtitles/metadata are unreliable for storage because of sanitization.

References and tooling:
• The presentation references the Wirehair fountain codec and recommends studying CRC variants and video compression internals. Visualizations were created with Manim and DaVinci Resolve.

🔹 wirehair #fountaincode #crc #dct #tool

🔗 Source: https://www.youtube.com/watch?v=l03Os5uwWmk

2026-02-11

James Van Der Beek died today at age 48, from Stage 3 #colorectalcancer.

In 2019, I was diagnosed with Stage 3B #colorectalcancer, at age 48. Thanks to good medical care, I survived.

This hits VERY close to home for me… if you’re 45 or older, you can get screened for this crappy disease - and maybe you won’t have to go through all the stuff I did:

- 8 rounds of 3 chemo drugs, 2 weeks each
- 32 consecutive days of chemoradiation treatments (pills AND lasers)
- 4 surgeries
- 2 months with a colostomy bag
- 15 CT scans
- 6 MRIs
- 1 month in the hospital
- 2 years of pelvic floor therapy
- 1 medical implant (sacral nerve stimulator)
- Permanent Chemotherapy-induced Peripheral Neuropathy (CIPN)
- Low Anterior Resection Syndrome (LARS)

Did you know that #colorectalcancer is the fourth most commonly diagnosed #cancer in the U.S., and the second leading cause of cancer #death?!

(Edit: typos)

#screening #healthcare #cancer #crc

https://colorectalcancer.org/screening-prevention/get-screened-45

Le Comité des droits de l'enfant #CRC a publié ses conclusions sur la Colombie, l'Éthiopie, le Ghana, la Malaisie, les Maldives, le Pakistan et l'Espagne.

https://buff.ly/MFkLTnC

ファイルの右クリックメニューやプロパティ画面内で、ハッシュチェックを行えるようにするソフト「OpenHashTab」
https://www.gigafree.net/utility/hash/OpenHashTab.html

#gigafree #OpenHashTab #ハッシュ値 #MD5 #SHA #CRC