ffmpeg를 실행하고 ?를 누르고 엔터치면 아래처럼 무언가 도움말이 나온다.
key function ? show this help + increase verbosity - decrease verbosity c Send command to first matching filter supporting it C Send/Queue command to all matching filters D cycle through available debug modes h dump packets/hex press to cycle through the 3 states q quit s Show QP histogram |
c 누르고 하면 먼가 이상한게 뜨는데.. 찾아도 잘 안나온다.
Enter command: <target>|all <time>|-1 <command>[ <argument>] |
찾아보니.. 필터별로 명령어를 보내는 거라고..
libavcodec 쪽으로도 명령어 보내서 네비게이션 가능하려나?
[링크 : https://stackoverflow.com/questions/48635380/ffmpeg-interactive-mode-help-options]
[링크 : https://ffmpeg.org/ffmpeg-filters.html#sendcmd_002c-asendcmd]
[링크 : https://ffmpeg.org/ffmpeg-filters.html]
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요건 ffplay
while playing q, ESC Quit.
f Toggle full screen.
p, SPC Pause.
m Toggle mute.
9, 0 Decrease and increase volume respectively.
/, * Decrease and increase volume respectively.
a Cycle audio channel in the current program.
v Cycle video channel.
t Cycle subtitle channel in the current program.
c Cycle program.
w Cycle video filters or show modes.
s Step to the next frame.
Pause if the stream is not already paused, step to the next video frame, and pause.
left/right Seek backward/forward 10 seconds.
down/up Seek backward/forward 1 minute.
page down/page up Seek to the previous/next chapter. or if there are no chapters Seek backward/forward 10 minutes.
right mouse click Seek to percentage in file corresponding to fraction of width.
left mouse double-click Toggle full screen. |
[링크 : http://manpages.ubuntu.com/manpages/cosmic/man1/ffplay.1.html]
[링크 : http://www.herongyang.com/Flash/Video-Stream-FFmpeg-ffplay-Interactive-Command.html]