The video format and the video player essentially stream data bytes to the video processor (and wait for a vsync at specified points). How difficult would it be to make the animation tool to use the full capacity of the V9938 VDP? If you want to play general video with sampled sound, you should look at amazing TI VidConvert. The video player is optimized to efficiently update the differences between subsequent frames, so it works best on stylized animations such as Bad Apple. Its build file provides an elaborate example applying the tools, but you can also simply create a cartridge to play a silent animation, or just a chiptune, or just some speech. The project sprouted from creating my Bad Apple demo, also a project on Github. The player is written in TMS9900 assembly.

You can find the tools and documentation as an open source project on Github. Video player: Assemble the player as an application on a cartridge with bank-switched ROM (up to 32 MB).Resulting video: Merge any number of the above media at freely chosen time frames in a single optimized video.Tweak the files in a more convenient text format. Speech: Import binary LPC files, from the speech dictionary, BlueWizard, python_wizard, and Praat.Music: Extract the sound commands from VGM files.Animation: Import still frames or zip files with sequences of frames in common image formats (GIF, PNG, PBM, BMP), at a full 256x192 pixels in all 15 colors, at 25 or 30 fps.I've released a set of tools to create and play optimized videos:Ĭommand-line tools to prepare and merge animations, music, and speech in a video.Ī video player to play the result on the TI-99/4A.

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