Display Filter Reference: JPEG File Interchange Format

Protocol field name: image-jfif

Versions: 1.0.0 to 3.2.7

Back to Display Filter Reference

Field name Description Type Versions
image-jfif.app0-identifier-not-jfif Initial App0 segment with "JFIF" Identifier not found Label 2.0.0 to 3.2.7
image-jfif.comment Comment Character string 2.0.0 to 3.2.7
image-jfif.endianness Endianness Unsigned integer, 2 bytes 2.0.0 to 3.2.7
image-jfif.entropy_coded_segment Entropy-coded segment (dissection is not yet implemented) Sequence of bytes 2.0.0 to 3.2.7
image-jfif.exif_flashpix_marker Exif FlashPix APP2 application marker Label 2.0.0 to 3.2.7
image-jfif.extension.code Extension code Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.fill_bytes Fill bytes Sequence of bytes 2.0.0 to 3.2.7
image-jfif.header.comment Comment header Label 2.0.0 to 3.2.7
image-jfif.header.sos Start of Segment header Label 1.0.0 to 3.2.7
image-jfif.identifier Identifier Character string 1.0.0 to 3.2.7
image-jfif.ifd.count Count Unsigned integer, 4 bytes 2.0.0 to 3.2.7
image-jfif.ifd.num_fields Number of fields in this IFD Unsigned integer, 2 bytes 2.0.0 to 3.2.7
image-jfif.ifd.offset Value offset from start of TIFF header Unsigned integer, 4 bytes 2.0.0 to 3.2.7
image-jfif.ifd.tag Exif Tag Unsigned integer, 2 bytes 2.0.0 to 3.2.7
image-jfif.ifd.type Type Unsigned integer, 2 bytes 2.0.0 to 3.2.7
image-jfif.length Length Unsigned integer, 2 bytes 1.0.0 to 3.2.7
image-jfif.marker Marker Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.marker_segment Marker segment Label 1.8.0 to 3.2.7
image-jfif.next_ifd_offset Offset to next IFD from start of TIFF header Unsigned integer, 4 bytes 2.0.0 to 3.2.7
image-jfif.next_ifd_offset.invalid Invalid value Label 2.0.0 to 3.2.7
image-jfif.remain_seg_data Remaining segment data Sequence of bytes 2.0.0 to 3.2.7
image-jfif.RGB RGB values of thumbnail pixels Sequence of bytes 1.0.0 to 3.2.7
image-jfif.skipped_tiff_data Skipped data between end of TIFF header and start of IFD Sequence of bytes 2.0.0 to 3.2.7
image-jfif.sof Start of Frame header Label 1.0.0 to 3.2.7
image-jfif.sof.c_i Component identifier Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sof.h_i Horizontal sampling factor Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sof.lines Lines Unsigned integer, 2 bytes 1.0.0 to 3.2.7
image-jfif.sof.nf Number of image components in frame Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sof.precision Sample Precision (bits) Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sof.samples_per_line Samples per line Unsigned integer, 2 bytes 1.0.0 to 3.2.7
image-jfif.sof.tq_i Quantization table destination selector Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sof.v_i Vertical sampling factor Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sos.ac_entropy_selector AC entropy coding table destination selector Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sos.ah Successive approximation bit position high Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sos.al Successive approximation bit position low or point transform Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sos.component_selector Scan component selector Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sos.dc_entropy_selector DC entropy coding table destination selector Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sos.ns Number of image components in scan Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sos.se End of spectral selection Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.sos.ss Start of spectral or predictor selection Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.start_ifd_offset Start offset of IFD starting from the TIFF header start Unsigned integer, 4 bytes 2.0.0 to 3.2.7
image-jfif.start_ifd_offset.invalid Invalid value Label 2.0.0 to 3.2.7
image-jfif.units Units Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.version Version Label 1.0.0 to 3.2.7
image-jfif.version.major Major Version Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.version.minor Minor Version Unsigned integer, 1 byte 1.0.0 to 3.2.7
image-jfif.Xdensity Xdensity Unsigned integer, 2 bytes 1.0.0 to 3.2.7
image-jfif.Xthumbnail Xthumbnail Unsigned integer, 2 bytes 1.0.0 to 3.2.7
image-jfif.Ydensity Ydensity Unsigned integer, 2 bytes 1.0.0 to 3.2.7
image-jfif.Ythumbnail Ythumbnail Unsigned integer, 2 bytes 1.0.0 to 3.2.7
image-jfifmarker_segment Marker segment Label 1.0.0 to 1.6.16
Go Beyond with Riverbed Technology

Riverbed is Wireshark's primary sponsor and provides our funding. They also make great products that fully integrate with Wireshark.

I have a lot of traffic...

ANSWER: SteelCentral™ AppResponse 11
  • • Full stack analysis – from packets to pages
  • • Rich performance metrics & pre-defined insights for fast problem identification/resolution
  • • Modular, flexible solution for deeply-analyzing network & application performance
Learn More