DSi Camera Record homebrew app?

cozmicdudes · Apr 25, 2023

Is there a homebrew app to record from the DSi camera?

Pk11 · Apr 26, 2023

dsi-camera. For video I have a branch called dsi-camcorder, quoting from Discord: (paraphrased)

DS⁽ⁱ⁾ Mode Hacking said:
Download:

dsi-camcorder.nds

dsi-camcorder.cia

Conversion:

Download convert.py and run the bin file from the app through it

Run ffmpeg -y -r 5 -i out/%04d.png out.mp4 on the outputted PNG sequence, note that 5 FPS is not perfectly accurate, that's just an estimate

Repo: <https://github.com/Epicpkmn11/dsi-camera/tree/camcorder>
Video: https://cdn.discordapp.com/attachments/547986366357700620/1026349047168106536/out.mp4

cozmicmarios · Mar 16, 2024

Hello, I am cozmicdudes. I lost access to that GBA Temp acc last year but all the links don't work for the camera recorder.
can you resend it?

Pk11 · Mar 18, 2024

cozmicmarios said:
Hello, I am cozmicdudes. I lost access to that GBA Temp acc last year but all the links don't work for the camera recorder.
can you resend it?

Discord said:
__**dsi-camcorder**__
**Download**:
- https://cdn.discordapp.com/attachments/1004905476527489064/1059341719352651787/dsi-camcorder.nds
- https://cdn.discordapp.com/attachments/1004905476527489064/1059341719021309992/dsi-camcorder.cia
**Conversion**:
- https://cdn.discordapp.com/attachments/547986366357700620/1026348530803146783/convert.py
- `ffmpeg -y -r 5 -i out/%04d.png out.mp4`
**Repo**: <https://github.com/Epicpkmn11/dsi-camera/tree/camcorder>
**Video**: https://cdn.discordapp.com/attachments/547986366357700620/1026349047168106536/out.mp4

hmm, same issue even though it works on discord. attached files instead.

rvtr · Mar 18, 2024

@Pk11 you can't link to discord attachments anymore. The finally made links expire after a time.

anotherthing · Mar 18, 2024

Pk11 said:
attached files instead.

Thank you! Can you briefly explain what the convert.py does? And what the output file is? I can tell that it converts the .bin to a series of PNG files, but I can't manage to run the python script using Python 3.8.

Pk11 · Mar 18, 2024

anotherthing said:
Thank you! Can you briefly explain what the convert.py does? And what the output file is? I can tell that it converts the .bin to a series of PNG files, but I can't manage to run the python script using Python 3.8.

The bin simply contains raw 256x192 15bpp BGR bitmap frames concatenated together, with u32 delays in between (in CPU cycles iirc, I meant to make that actually useful with milliseconds or so but haven't gotten around to it)

You probably just need to install Pillow (pip3 install Pillow) to run it.

anotherthing · Mar 20, 2024

Wow, Nintendo's had a thing for 15bit color since the GameBoy Advance. I'm curious, does f.read do 8bits at a time? If so, isn't there a bit missing each time or does the camera just leave an extra bit on the end of each pixel palette? Sorry, I don't know much about how the DSi Camera works. Or Python. Especially Python.

cozmicmarios · Mar 23, 2024

Thanks! finally after a year I have it!

Pk11 · Mar 25, 2024

anotherthing said:
Wow, Nintendo's had a thing for 15bit color since the GameBoy Advance. I'm curious, does f.read do 8bits at a time? If so, isn't there a bit missing each time or does the camera just leave an extra bit on the end of each pixel palette? Sorry, I don't know much about how the DSi Camera works. Or Python. Especially Python.

The highest bit of each 16-bits is always zero. It has a few uses on the DS depending on video mode (transparency bit, LSB of green), but with the camera it's just unused.

Edit: Actually it's probably always one, not zero, I don't remember for sure.

DSi Camera Record homebrew app?

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