Tuna-viDS

An Xvid video player for the Nintendo DS

Tuna-viDS plays AVI files that contain Xvid encoded video and MP3 encoded audio.

Download

The latest version is tuna-viDS v1.3. Source is available under the combined GPL v2 and RPSL licences. Code under development is on GitHub.

Version 1.2 is available here.

Version 1.1 is available here.

The Christmas 2007 release is here.

Loader

Tuna-viDS will load files from the path supplied by a loader. One such loader is NDS Homebrew Menu.

Older releases, such as v1.1, used their own loader called tuna-open. It is included in the tuna-viDS 1.1 download. The loader source code is also available.

Controls

Either touch the controls on screen, or use the following buttons:

B - Play/Pause
X - Toggle bottom backlight
Left - increase video delay by one frame
Right - decrease video delay by one frame

Instructions

Copy tuna-viDS.nds to the root of your flash card or to /DS/tuna-viDS/tuna-viDS.nds or to /data/tuna-viDS/tuna-viDS.nds
DLDI patch tuna-open.nds and copy it to your flash card
Run tuna-open.nds
Select an AVI file to play

Thanks

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 me the idea to port Xvid to the DS
Brittlestar - music sampled from Did U Get What U Want
Ferrie - GUI's skin

Converting videos

Tuna-viDS plays videos with the following format:

Video: 256px wide, up to 192px tall, up to 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. It muxes 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.