FFmpeg Global Setting

Global setting of FFmpeg is used to set the parameters of FFmpeg that are not associated with a single stream or file.30Dec2019

Switch: -hide_banner

To suppress printing banner of a copyright notice, build options and library versions which are normally show by all FFmpeg tools.

Syntax

-hide_banner

Code Example

Example to hide the banner

ffmpeg -hide_banner

Command result

Switch -loglevel or -v

To set the logging level and flags used by the library.

Syntax

-loglevel [flags+]loglevel
-v [flags+]loglevel

Arguments

flagoptional flags prefix: repeat: to indicate that repeated log output should not be compressed to the first time and the "Last message repeated n times" line will be omitted. levelto indicate that log output should add a [level] prefix to each message line. This can be used as alternative to log coloring, e.g. when dumping the log to file. Flags can also be used alone by adding a '+'/'-' prefix to set/reset a single flag without affecting other flags or changing loglevel. When setting both flags and loglevel, a '+' separator is expected between the last flags value and before loglevel. loglevela string or a number containing value of: quiet, -8to show nothing at all; be silent. panic, 0Only show fatal errors which could lead the process to crash, such as an assertion failure. This is not currently used for anything fatal, 8Only show fatal errors. These are errors after which the process absolutely cannot continue. error, 16Show all errors, including ones which can be recovered from. warning, 24Show all warnings and errors. Any message related to possibly incorrect or unexpected events will be shown. info, 32Show informative messages during processing. This is in addition to warnings and errors. This is the default value. verbose, 40Same as info, except more verbose. debug, 48Show everything, including debugging information. trace, 56To trace By default the program logs to stderr. If coloring is supported by the terminal, colors are used to mark errors and warnings. Log coloring can be disabled setting the environment variable AV_LOG_FORCE_NOCOLOR or NO_COLOR, or can be forced setting the environment variable AV_LOG_FORCE_COLOR. The use of the environment variable NO_COLOR is deprecated and will be dropped in a future FFmpeg version.

Code Example

Example to enable repeated log output, add the level prefix, and set loglevel to verbose:

ffmpeg -loglevel repeat+level+verbose -i input output

Example to enable repeated log output without affecting current state of level prefix flag or loglevel:

ffmpeg [...] -loglevel +repeat

Source and Reference

https://ffmpeg.org/ffmpeg.html