FFMPEG ffprobe Documentation 7 Expression Evaluation
For example the construct:
if (A AND B) then C
FFMPEG ffprobe Documentation 7 Expression Evaluation
is equivalent to:
if(A*B, C)
FFMPEG ffprobe Documentation 7 Expression Evaluation
For example the construct:
if (A AND B) then C
FFMPEG ffprobe Documentation 7 Expression Evaluation
is equivalent to:
if(A*B, C)
FFMPEG FFmpeg Utilities Documentation 3 Expression Evaluation
For example the construct:
if (A AND B) then C
FFMPEG FFmpeg Utilities Documentation 3 Expression Evaluation
is equivalent to:
if(A*B, C)
FFMPEG ffplay Documentation 5 Expression Evaluation
For example the construct:
if (A AND B) then C
FFMPEG ffplay Documentation 5 Expression Evaluation
is equivalent to:
if(A*B, C)
FFMPEG ffprobe Documentation 32 Video Filters 32.171 palettegen 32.171.1 Examples
The filter also exports the frame metadata lavfi.color_quant_ratio (nb_color_in / nb_color_out) which you can use to evaluate the degree of color quantization of the palette. This information is also visible at info logging level.
ffmpeg -i input.mkv -vf palettegen palette.png
FFMPEG ffprobe Documentation 20 Input Devices 20.7 fbdev
To record from the framebuffer device /dev/fb0 with ffmpeg:
ffmpeg -f fbdev -framerate 10 -i /dev/fb0 out.avi
FFMPEG ffprobe Documentation 37 Multimedia Filters 37.5 aphasemeter 37.5.2 Examples
Set mono or out of phase duration until notification, expressed in seconds. Default is 2.
ffmpeg -i stereo.wav -af aphasemeter=video=0:phasing=1:duration=1:tolerance=0.001 -f null -
FFMPEG ffprobe Documentation 33 OpenCL Video Filters 33.2 boxblur_opencl 33.2.1 Examples
For the alpha plane, a 3x3 box radius will be run 7 times.
-i INPUT -vf "hwupload, boxblur_opencl=2:1:4:5:3:7, hwdownload" OUTPUT

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FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.43 zmq

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.42 unix

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.41 udp 3.41.1 Examples

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.41 udp

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.40 tls

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.39 tcp

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.38 tee

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.37 subfile

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.35 srt

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.34 sctp

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FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.33 sap 3.33.1 Muxer

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.32 rtsp 3.32.1 Examples

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.32 rtsp

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.30 librtmp rtmp, rtmpe, rtmps, rtmpt, rtmpte

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.29 libssh

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.22 rtmp

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.20 prompeg

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.19 pipe

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.18 md5

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.17 mmsh

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.15 Icecast

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.14 http 3.14.1 HTTP Cookies

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.14 http

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.13 hls

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.10 ftp

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.9 file

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.8 data

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.7 crypto

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.6 concatf

FFMPEG FFmpeg Protocols Documentation 3 Protocols 3.5 concat