HTML stands for hyperTEXT markup language. Meaning, it is a TEXT format. The purpose is to structure text content and add cross-references, aka links (hypertext, as in hyperlink). HTML does not convert to video.
No .js files are processed and no .mp3 files are processed either. The output is a high quality audio .wav file. This version allows you to view audio data as PNG files. Master uses a standard DTS or AD PCM audio stream and then converts it to a WAS file. How does it work? Master converts WAS file into an MPEG audio file. The audio data is converted to an MPEG audio stream that's suitable for conversion back to Orbit audio data when using MP3 codec. The Orbit text and image are converted to a PGM (PDF) file. This PGM file contains a separate audio stream (MP3) which is converted to an MPEG audio stream to be used for viewing on the VCR. It's simple — you don't need to deal with .py, .PC,.bz2 files, or .pdf, .png, or .mp3 streams. What do I need? A VCR with the ability to run MP3 and Orbit.