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Stefan Westerfeld
ffmpeg
Commits
99bbf4a5
Commit
99bbf4a5
authored
Jun 10, 2021
by
Gyan Doshi
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doc/ffmpeg: document reinit_filter
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591b88e6
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doc/ffmpeg.texi
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99bbf4a5
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@@ -759,6 +759,16 @@ This option is similar to @option{-filter}, the only difference is that its
argument is the name of the file from which a filtergraph description is to be
read.
@item -reinit
_
filter[:@var
{
stream
_
specifier
}
] @var
{
integer
}
(@emph
{
input,per-stream
}
)
This boolean option determines if the filtergraph(s) to which this stream is fed gets
reinitialized when input frame parameters change mid-stream. This option is enabled by
default as most video and all audio filters cannot handle deviation in input frame properties.
Upon reinitialization, existing filter state is lost, like e.g. the frame count @code
{
n
}
reference available in some filters. Any frames buffered at time of reinitialization are lost.
The properties where a change triggers reinitialization are,
for video, frame resolution or pixel format;
for audio, sample format, sample rate, channel count or channel layout.
@item -filter
_
threads @var
{
nb
_
threads
}
(@emph
{
global
}
)
Defines how many threads are used to process a filter pipeline. Each pipeline
will produce a thread pool with this many threads available for parallel processing.
...
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