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Tuna-viDS

From GameBrew - a wiki dedicated to Video Game Homebrew.

Tunavids
Tunavids.png
General
Author(s)Chishm
TypeMedia player
Version1.1
LicenceMixed
Links
Download
Website
Source
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A Xvid video player for the Nintendo DS. Tuna-viDS plays AVI files that contain Xvid encoded video and MP3 encoded audio.

Installation

Download and extract file.

DLDI patch .nds file and copy it to the root directory of the card.

Run tuna-open.nds and select an AVI file to play.

User guide

Tuna-viDS plays videos with the following format:

Video - Up to 256px wide, 192px tall and 12fps. Xvid encoded, non-interlaced.

Audio - Stereo or mono MP3.

Container - AVI with chunk index, video must be the first stream (fourcc 00dc).

You can use ffmpeg to convert videos with this command (all one line):

ffmpeg -i <infile> -f avi -r 10 -s 256x192 -b 192k -bt 64k -vcodec libxvid -deinterlace -acodec libmp3lame -ar 32000 -ab 96k -ac 2 tuna-vids.avi


This encodes the video as Xvid at 256×192px, 10fps, 192±64kbps. You can try up to 12fps, but anything higher will slow down the decoder too much. It encodes the audio as stereo MP3 at 32kHz/96kbps, and makes it into an AVI container with the filename tuna-vids.avi.

Feel free to experiment with bit rates, sample rates, and frame rates. Just keep the video exactly 256px wide and no more than 192px tall.

Controls

B - Play, Pause

X - Toggle bottom backlight

Left - Increase video delay by one frame

Right - Decrease video delay by one frame

Compatibility

Tested on M3DS Real (firmware 3.4).

Credits

  • Xvid team - Writing the Xvid codec.
  • Christoph Lampert - Video playback example.
  • Robin Watts, Sophie Wilson & Paul Gardiner - YUV to RGB colour space converter.
  • HelixCommunity - MP3 decoder.
  • ThomasS, LiraNuna, strager & DarkEz - Helix MP3 decoder port.
  • Costas - Changes necessary for stereo MP3 support.
  • Thoduv & ecurtz - Stereo audio deinterleaver.
  • Noda - Some MP3 player ideas.
  • abraxas - Giving the idea to port Xvid to the DS.
  • Brittlestar - Music sampled from Did U Get What U Want.
  • Ferrie - GUI's skin.