Each section is printed on a single line. If no option is specified, the output has the form:

section|key1=val1| ... |keyN=valN
Each section is printed on a single line. If no option is specified, the output has the form:

section|key1=val1| ... |keyN=valN
Print each section in the form:

[SECTION]
key1=val1
...
keyN=valN
[/SECTION]
Allows setting and clearing cpu flags. This option is intended for testing. Do not use it unless you know what you’re doing.

ffmpeg -cpuflags -sse+mmx ...
ffmpeg -cpuflags mmx ...
ffmpeg -cpuflags 0 ...
Override detection of CPU count. This option is intended for testing. Do not use it unless you know what you’re doing.

ffmpeg -cpucount 2
For example to enable repeated log output, add the level prefix, and set loglevel to verbose:

ffmpeg -loglevel repeat+level+verbose -i input output
Another example that enables repeated log output without affecting current state of level prefix flag or loglevel:

ffmpeg [...] -loglevel +repeat
For example, to output a report to a file named ffreport.log using a log level of 32 (alias for log level info):

FFREPORT=file=ffreport.log:level=32 ffmpeg -i input output
The accepted syntax is:

[(YYYY-MM-DD|YYYYMMDD)[T|t| ]]((HH:MM:SS[.m...]]])|(HHMMSS[.m...]]]))[Z]
now
Fill data in a background thread, to decouple I/O operation from demux thread.

async:URL
async:http://host/resource
async:cache:http://host/resource
Read angle 2 of playlist 4 from BluRay mounted to /mnt/bluray, start from chapter 2:

-playlist 4 -angle 2 -chapter 2 bluray:/mnt/bluray

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