Signed-off-by: Lou Logan <lou@lrcd.com>

Explain how to achieve infinite looping with the loop / aloop filters.

Signed-off-by: Werner Robitza <werner.robitza@gmail.com>

This was added in early 2013 and abandoned several months later; as far as
I can tell, there are no external users.  Future OpenCL use will be via
hwcontext, which requires neither special OpenCL-only API nor global state
in libavutil.

All internal users are also deleted - this is just the unsharp filter
(replaced by unsharp_opencl, which is more flexible) and the deshake filter
(no replacement).

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

The user-supplied value for timecode_rate in drawtext is rounded
to nearest integer. So, a supplied value of 0.49 or lower is rounded to 0.
This throws a misleading error message which says "Timecode frame rate must be
specified". Changed message to account for values under one.

Also noted supported framerates for drop TC.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

This patch enables paletteuse to identify the transparency in incoming
video and tag transparent pixels on outgoing video with the correct
index from the palette.

This requires tracking the transparency index in the palette,
establishing an alpha threshold below which a pixel is considered
transparent and above which the pixel is considered opaque, and
additional changes to track the alpha value throughout the conversion
process.

This change is a partial fix for https://trac.ffmpeg.org/ticket/4443
However, animated GIFs are still output incorrectly due to a bug
in gif optimization which does not correctly handle transparency.

Signed-off-by: Clément Bœsch <u@pkh.me>

Signed-off-by: Gyan Doshi <gyandoshi@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Correct typo in signalstats filter section and qualify description for variable
in select filter.

Signed-off-by: Gyan Doshi <gyandoshi@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Gyan Doshi <gyandoshi@gmail.com>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Allows to specify the action to be performed when reading the last frame
from the internal FIFO buffer. By default the last frame is written to
filter output depending on the timestamp rounding method. When using
"pass" action the last frame is passed through if input duration
has not been reached yet.

Examples using an input file with 25Hz, 1.4sec duration:
 - "fps=fps=1:round=near" generates an output file of 1sec
 - "fps=fps=1:round=near:eof_action=pass" generates an output file of
   2sec

Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>

Align order of "start_time" option within fps filter documentation to actual
implementation. Also fix some documentation cosmetics.

Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>

Signed-off-by: Ashish Singh <ashk43712@gmail.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

"apix_fmts" found by Marc Péchaud.
"speedloss" found by Mikhail V.

Signed-off-by: Lou Logan <lou@lrcd.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes #6605.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Such requirement is not necessary and code works without it just fine.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

Signed-off-by: Kyle Swanson <k@ylo.ph>

Explain that audio will be upsampled to 192 kHz. Addresses issues mentioned in
issue 6570.

Signed-off-by: Werner Robitza <werner.robitza@gmail.com>

Based off mpv automatic tonemapping capabilities.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Brice Waegeneire <brice.wge@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>