ffmpeg_utils

Module to change the configuration of FFmpeg libraries (such as libavformat).

It affects functionalities in torchaudio.io (and indirectly torchaudio.load()).

get_log_level

torchaudio.utils.ffmpeg_utils.get_log_level() → int

Get the log level of FFmpeg.

See set_log_level() for the detailo.

get_versions

torchaudio.utils.ffmpeg_utils.get_versions() → Dict[str, Tuple[int]]

Get the versions of FFmpeg libraries

Returns:

mapping from library names to version string,

i.e. “libavutil”: (56, 22, 100).

Return type:

dict

Tutorials using get_versions:

StreamWriter Basic Usage

StreamWriter Basic Usage

set_log_level

torchaudio.utils.ffmpeg_utils.set_log_level(level: int)

Set the log level of FFmpeg (libavformat etc)

Parameters:

level (int) –

Log level. The larger, the more verbose.

The following values are common values, the corresponding ffmpeg’s -loglevel option value and desription.

• -8 (quiet): Print no output.

• 0 (panic): Something went really wrong and we will crash now.

• 8 (fatal): Something went wrong and recovery is not possible. For example, no header was found for a format which depends on headers or an illegal combination of parameters is used.

• 16 (error): Something went wrong and cannot losslessly be recovered. However, not all future data is affected.

• 24 (warning): Something somehow does not look correct. This may or may not lead to problems.

• 32 (info): Standard information.

• 40 (verbose): Detailed information.

• 48 (debug): Stuff which is only useful for libav* developers.

• 56 (trace): Extremely verbose debugging, useful for libav* development.