With this, an encoding process can change certain values that until now were
settable during init only.
A graceful reconfiguration will be attempted first, which depends on the
capabilities of the underlying encoder. If that fails, a full encoder restart
is performed instead.
The reconfiguration parameters are passed as a list of target timestamp and
key=value pairs to be applied at that point during encoding. Future
improvements may also include targetting encoded frame number, and extending
the command feature to also support passing encoder runtime arguments and not
just filter runtime change arguments.
Example:
ffmpeg -i INPUT -reinit_opts:v:0 "pts=100000|crf=18,pts=200000|video_size=1280x720:crf=20" -crf 30 -c:v:0 libx264 OUTPUT
Signed-off-by: James Almer <jamrial@gmail.com>
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