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v1.2.0: video recording with sound

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@PR0-CAVIAR PR0-CAVIAR released this 25 Oct 19:27
v1.2.0
e32ec37

This release adds video recording with sound to Epicpkmn11's dsi-camera.

Copy dsi-camera.nds to your SD card and launch it in DSi mode (for example from TWiLight Menu++). The cameras only work on a DSi, or a 3DS in DSi mode.

Controls

Button Action
SELECT Start / stop recording
L / R Take a 640x480 photo
A Swap inner/outer camera
START Exit (saves a recording first)

What you get

  • Video with sound: recordings go to sd:/DCIM/VIDEO/REC_####.AVI: 256x192 uncompressed video plus 16-bit mono audio from the mic.
  • Plays as-is in VLC. To make an MP4 for your phone, use convert.py (needs Python 3 and ffmpeg): 
    python convert.py REC_0000.AVI --scale 4
    That gives a 1024x768 MP4 with crisp, nearest-neighbor pixels.
  • Frame rate: about 13-15 fps in daylight and 9-11 fps indoors. The camera sensor is the limit, not the SD card.
  • Audio stays in sync: every frame is timestamped, so sound lines up even when the frame rate changes.
  • Live status screen: fps, audio level, SD speed, buffer and free space.
  • Safe stops: if the battery dies, you only lose the last few seconds. Recording stops cleanly when the SD card is full.
  • About 5 GB per hour. Long recordings are split into ~12-minute files, and convert.py can join them back together.

Photos still save to sd:/DCIM/100DSI00/ as before.

Assets 4
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