Split -Samsung 3 seconds motion jpg- into still photo and video (2025-02)
version: 1.0.30 date: 2025-02-09 author: bestia.dev repository: GitHub

Hashtags: #rustlang #tutorial #cli
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My Samsung S23 phone can take motion photos. It is a combination of a jpg photo with attached a short 3 seconds video mp4. Most computers cannot play this strange format yet.

I want to split these files into a normal jpg and a normal mp4 file.

The original script is in python from https://github.com/chlete/samsung-motion-photo-splitter.

Samsung's S7 Motion Photo splitter.
S7 generates a container which encapsulates picture and video. The first part
is a JPEG with its usual footer plus Samsung's own (MotionPhoto_Data). Second
part is the video.

Algorithm:
Count the bytes for each offset and write the files.
JPEG: byte zero to samsung footer end
MP4: JPEG's footer + 1 to end of file (size of the file)

I just translated it to Rust. I even used an AI translator to help with the initial translation. But it didn't work on first try. I needed to correct it a bit.

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