Show a line containing various information for each input audio frame. The input audio 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, in time base units; the time base depends on the filter input pad, and is usually 1/sample_rate.

pts_time

presentation timestamp of the input frame in seconds

pos

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

fmt

sample format

chlayout

channel layout

rate

sample rate for the audio frame

nb_samples

number of samples (per channel) in the frame

checksum

Adler-32 checksum (printed in hexadecimal) of the audio data. For planar audio the data is treated as if all the planes were concatenated.

plane_checksums

A list of Adler-32 checksums for each data plane.