@item multi
Enable multichannels evaluation on gain. Default is disabled.
+
+@item zero_phase
+Enable zero phase mode by substracting timestamp to compensate delay.
+Default is disabled.
@end table
@subsection Examples
firequalizer=gain_entry='entry(100,0); entry(400, -4); entry(1000, -6); entry(2000, 0)'
@end example
@item
-higher delay:
+higher delay with zero phase to compensate delay:
@example
-firequalizer=delay=0.1:fixed=on
+firequalizer=delay=0.1:fixed=on:zero_phase=on
@end example
@item
lowpass on left channel, highpass on right channel:
If the specified value is not valid, it is ignored and prior one is kept.
@end table
+@section loudnorm
+
+EBU R128 loudness normalization. Includes both dynamic and linear normalization modes.
+Support for both single pass (livestreams, files) and double pass (files) modes.
+This algorithm can target IL, LRA, and maximum true peak.
+
+To enable compilation of this filter you need to configure FFmpeg with
+@code{--enable-libebur128}.
+
+The filter accepts the following options:
+
+@table @option
+@item I, i
+Set integrated loudness target.
+Range is -70.0 - -5.0. Default value is -24.0.
+
+@item LRA, lra
+Set loudness range target.
+Range is 1.0 - 20.0. Default value is 7.0.
+
+@item TP, tp
+Set maximum true peak.
+Range is -9.0 - +0.0. Default value is -2.0.
+
+@item measured_I, measured_i
+Measured IL of input file.
+Range is -99.0 - +0.0.
+
+@item measured_LRA, measured_lra
+Measured LRA of input file.
+Range is 0.0 - 99.0.
+
+@item measured_TP, measured_tp
+Measured true peak of input file.
+Range is -99.0 - +99.0.
+
+@item measured_thresh
+Measured threshold of input file.
+Range is -99.0 - +0.0.
+
+@item offset
+Set offset gain. Gain is applied before the true-peak limiter.
+Range is -99.0 - +99.0. Default is +0.0.
+
+@item linear
+Normalize linearly if possible.
+measured_I, measured_LRA, measured_TP, and measured_thresh must also
+to be specified in order to use this mode.
+Options are true or false. Default is true.
+
+@item dual_mono
+Treat mono input files as "dual-mono". If a mono file is intended for playback
+on a stereo system, its EBU R128 measurement will be perceptually incorrect.
+If set to @code{true}, this option will compensate for this effect.
+Multi-channel input files are not affected by this option.
+Options are true or false. Default is false.
+
+@item print_format
+Set print format for stats. Options are summary, json, or none.
+Default value is none.
+@end table
+
@section lowpass
Apply a low-pass filter with 3dB point frequency.
@end table
@item qp
-Display quantization parameters using the chroma planes
+Display quantization parameters using the chroma planes.
+
+@item mv_type, mvt
+Set motion vectors type to visualize. Includes MVs from all frames unless specified by @var{frame_type} option.
+
+Available flags for @var{mv_type} are:
+
+@table @samp
+@item fp
+forward predicted MVs
+@item bp
+backward predicted MVs
+@end table
+
+@item frame_type, ft
+Set frame type to visualize motion vectors of.
+
+Available flags for @var{frame_type} are:
+
+@table @samp
+@item if
+intra-coded frames (I-frames)
+@item pf
+predicted frames (P-frames)
+@item bf
+bi-directionally predicted frames (B-frames)
+@end table
@end table
@subsection Examples
@itemize
@item
-Visualizes multi-directionals MVs from P and B-Frames using @command{ffplay}:
+Visualize forward predicted MVs of all frames using @command{ffplay}:
@example
-ffplay -flags2 +export_mvs input.mpg -vf codecview=mv=pf+bf+bb
+ffplay -flags2 +export_mvs input.mp4 -vf codecview=mv_type=fp
+@end example
+
+@item
+Visualize multi-directionals MVs of P and B-Frames using @command{ffplay}:
+@example
+ffplay -flags2 +export_mvs input.mp4 -vf codecview=mv=pf+bf+bb
@end example
@end itemize
@item fcc
FCC
+
+@item bt2020
+BT.2020
@end table
@end table
Do a fast conversion, which skips gamma/primary correction. This will take
significantly less CPU, but will be mathematically incorrect. To get output
compatible with that produced by the colormatrix filter, use fast=1.
+
+@item dither
+Specify dithering mode.
+
+The accepted values are:
+@table @samp
+@item none
+No dithering
+
+@item fsb
+Floyd-Steinberg dithering
+@end table
+
+@item wpadapt
+Whitepoint adaptation mode.
+
+The accepted values are:
+@table @samp
+@item bradford
+Bradford whitepoint adaptation
+
+@item vonkries
+von Kries whitepoint adaptation
+
+@item identity
+identity whitepoint adaptation (i.e. no whitepoint adaptation)
+@end table
+
@end table
The filter converts the transfer characteristics, color space and color
@example
setdar=dar=1.77777
setdar=dar=16/9
-setdar=dar=1.77777
@end example
@item
22222 44444
@end example
-@item drop_odd, 1
-Only output even frames, odd frames are dropped, generating a frame with
+@item drop_even, 1
+Only output odd frames, even frames are dropped, generating a frame with
unchanged height at half frame rate.
@example
11111 22222 33333 44444
Output:
- 22222 44444
- 22222 44444
- 22222 44444
- 22222 44444
+11111 33333
+11111 33333
+11111 33333
+11111 33333
@end example
-@item drop_even, 2
-Only output odd frames, even frames are dropped, generating a frame with
+@item drop_odd, 2
+Only output even frames, odd frames are dropped, generating a frame with
unchanged height at half frame rate.
@example
11111 22222 33333 44444
Output:
-11111 33333
-11111 33333
-11111 33333
-11111 33333
+ 22222 44444
+ 22222 44444
+ 22222 44444
+ 22222 44444
@end example
@item pad, 3
11111 11111 22222 22222 33333 33333 44444
@end example
+
@item mergex2, 7
Move odd frames into the upper field, even into the lower field,
generating a double height frame at same frame rate.
+
@example
------> time
Input:
@example
ffmpeg -i audio.flac -lavfi showwavespic=split_channels=1:s=1024x800 waveform.png
@end example
-
-@item
-Colorize the waveform with colorchannelmixer. This example will make
-the waveform a green color approximately RGB(66,217,150). Additional
-channels will be shades of this color.
-@example
-ffmpeg -i audio.mp3 -filter_complex "showwavespic,colorchannelmixer=rr=66/255:gg=217/255:bb=150/255" waveform.png
-@end example
@end itemize
@section spectrumsynth
@end example
@end itemize
+@subsection Commands
+
+Both movie and amovie support the following commands:
+@table @option
+@item seek
+Perform seek using "av_seek_frame".
+The syntax is: seek @var{stream_index}|@var{timestamp}|@var{flags}
+@itemize
+@item
+@var{stream_index}: If stream_index is -1, a default
+stream is selected, and @var{timestamp} is automatically converted
+from AV_TIME_BASE units to the stream specific time_base.
+@item
+@var{timestamp}: Timestamp in AVStream.time_base units
+or, if no stream is specified, in AV_TIME_BASE units.
+@item
+@var{flags}: Flags which select direction and seeking mode.
+@end itemize
+
+@item get_duration
+Get movie duration in AV_TIME_BASE units.
+
+@end table
+
@c man end MULTIMEDIA SOURCES
projects / ffmpeg / blobdiff