USM Video

Back to index | Edit this page

USM

• Format Type : Video
  
• Endian Order : Big Endian
  
• Signature : CRID
  

Format Specifications

// USM video file format

// big endian


4 bytes (char) - chunk signature  // "CRID" or "@SFV" or "@SFA"
4 bytes (uint32) - chunk size

crid_chunk_data
{
   1 byte - unknown  // always 0x00?
   1 byte (uint8) - payload offset
   2 bytes (uint16) - padding size
   1 byte (uint8) - channel number
   2 bytes - unknown
   1 byte (uint8) - payload type  // 0 - stream (audio/video binary data)
                                  // 1 - header (media metadata about a video or audio track)
                                  // 2 - section end (info about end of the chunk data)
                                  // 3 - seek (data about the seek positions of a video track)
  4 bytes (uint32) - frame time // used for "stream" chunks, 0 for other chunks
  4 bytes (uint32) - frame rate // for audio chunk always 2997
                                // for stream chunk 100*stream_rate
                                // for other chunks always 30
  8 bytes - unknown
  x bytes - payload
  x bytes - padding
} 

MultiEx BMS Script

Not written yet.

Notes and Comments

• Some *.USM files are encrypted using a 64 byte key (like HCA)

Games

List of games using this file format:

• Genshin Impact (*.USM) (encrypted?)
• NEO: The World Ends with You (*.USM) (encrypted?)
• Persona 5 Royal (*.USM) (encrypted, more info here)
• The Witcher 2 (PC) (*.USM)
• The Witcher 3: Wild Hunt (PC) (*.USM)

Compatible Programs

• Scaleform_VideoEncoder.zip / mirror1
• VGMToolbox
• FFmpeg
• CRID Demux Tool (CRID USM extractor) (+ source code) / mirror1
• UsmToolkit
• UsmDemuxer
• utf_tab (+ source code)

See Also

• USM description
• USM modding
• USM file format