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Diffstat (limited to 'doc/ffmpeg.texi')
| -rw-r--r-- | doc/ffmpeg.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index db7f05a3e0..4616a4239e 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -765,6 +765,17 @@ deriving it from the existing device with the name @var{source}. @item -init_hw_device list List all hardware device types supported in this build of ffmpeg. +@item -filter_hw_device @var{name} +Pass the hardware device called @var{name} to all filters in any filter graph. +This can be used to set the device to upload to with the @code{hwupload} filter, +or the device to map to with the @code{hwmap} filter. Other filters may also +make use of this parameter when they require a hardware device. Note that this +is typically only required when the input is not already in hardware frames - +when it is, filters will derive the device they require from the context of the +frames they receive as input. + +This is a global setting, so all filters will receive the same device. + @item -hwaccel[:@var{stream_specifier}] @var{hwaccel} (@emph{input,per-stream}) Use hardware acceleration to decode the matching stream(s). The allowed values of @var{hwaccel} are: |