Show a line containing various information for each input video frame. The input video is not modified.

The shown line contains a sequence of key/value pairs of the form key:value.

A description of each shown parameter follows:

n

sequential number of the input frame, starting from 0

pts

Presentation TimeStamp of the input frame, expressed as a number of time base units. The time base unit depends on the filter input pad.

pts_time

Presentation TimeStamp of the input frame, expressed as a number of seconds

pos

position of the frame in the input stream, -1 if this information in unavailable and/or meanigless (for example in case of synthetic video)

fmt

pixel format name

sar

sample aspect ratio of the input frame, expressed in the form num/den

s

size of the input frame, expressed in the form widthxheight

i

interlaced mode ("P" for "progressive", "T" for top field first, "B" for bottom field first)

iskey

1 if the frame is a key frame, 0 otherwise

type

picture type of the input frame ("I" for an I-frame, "P" for a P-frame, "B" for a B-frame, "?" for unknown type). Check also the documentation of the AVPictureType enum and of the av_get_picture_type_char function defined in libavutil/avutil.h.

checksum

Adler-32 checksum of all the planes of the input frame

plane_checksum

Adler-32 checksum of each plane of the input frame, expressed in the form "[c0c1c2c3]"