jpegInterchangeFormatLength property
The number of bytes of JPEG compressed thumbnail data. This is not used for primary image JPEG data. JPEG thumbnails are not divided but are recorded as a continuous JPEG bitstream from SOI to EOI. APPn and COM markers should not be recorded. Compressed thumbnails shall be recorded in no more than 64 KBytes, including all other data to be recorded in APP1.
Implementation
final double? jpegInterchangeFormatLength;