showinfo

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

This filter supports the following options:

'checksum'

Calculate checksums of each plane. By default enabled.

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

The following values are shown in the output:

'n'

The (sequential) number of the input frame, starting from 0.

'pts'

The 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'

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

'pos'

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

'fmt'

The pixel format name.

'sar'

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

's'

The size of the input frame. For the syntax of this option, check the (ffmpeg-utils)"Video size" section in the ffmpeg-utils manual.

'i'

The type of interlaced mode ("P" for "progressive", "T" for top field first, "B" for bottom field first).

'iskey'

This is 1 if the frame is a key frame, 0 otherwise.

'type'

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

'checksum'

The Adler-32 checksum (printed in hexadecimal) of all the planes of the input frame.

'plane_checksum'

The Adler-32 checksum (printed in hexadecimal) of each plane of the input frame, expressed in the form "[c0 c1 c2 c3]".