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, expressed as a number of time base units. The time base unit depends on the filter input pad, and is usually 1/sample_rate.

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 meaningless (for example in case of synthetic audio)

fmt

sample format name

chlayout

channel layout description

nb_samples

number of samples (per each channel) contained in the filtered frame

rate

sample rate for the audio frame

checksum

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

plane_checksum

Adler-32 checksum (printed in hexadecimal) for each input frame plane, expressed in the form "[c0c1c2c3c4c5c6c7]"