Psub.mp4

: MP4 files do not support bitmap-based subtitles like PGS (from Blu-ray) or VobSub (from DVD) as "soft" (toggleable) tracks.

If you are looking for a guide on how to submit files for 3D printing at PSU, the university's Maker Commons provides a specific workflow for their Prusa MK4S printers. Psub.mp4

: The build volume is limited to 9.8″ L x 8.2″ W x 8.6″ H (250mm x 210mm x 220mm). : MP4 files do not support bitmap-based subtitles

: For toggleable subtitles in MP4, you must use text-based formats like SRT or WebVTT . Subtitles - HandBrake Documentation : For toggleable subtitles in MP4, you must

If "Psub" refers to "Picture Subtitles" or "PGS Subtitles" in the context of an MP4 file, there are specific technical limitations for this container:

: While "Psub.mp4" might be a specific video tutorial you've encountered, the actual 3D objects must be uploaded in compatible formats (usually STL or 3MF) via the submission link. Technical Context: Subtitles in MP4