Changes between Version 6 and Version 7 of HWAccelIntro


Ignore:
Timestamp:
Oct 12, 2015, 12:01:09 PM (4 years ago)
Author:
saste
Comment:

extend introductory notice

Legend:

Unmodified
Added
Removed
Modified
  • HWAccelIntro

    v6 v7  
    11FFmpeg provides a subsystem for hardware acceleration.
    22
    3 Hardware acceleration allows to use specific devices (usually graphical card or other specific devices) to perform multimedia processing. This allows to use dedicated hardware to perform demanding computation while freeing the CPU from such computations.
     3Hardware acceleration allows to use specific devices (usually graphical card or other specific devices) to perform multimedia processing. This allows to use dedicated hardware to perform demanding computation while freeing the CPU from such computations. Typically hardware acceleration enables specific hardware devices (usually the GPU) to perform operations related to decoding and encoding video streams, or filtering video.t
     4
     5When using FFmpeg the tool, HW-assisted decoding is enabled using through the {{{-hwaccel}}} option, which enables the specific decoder. Each decoder may have specific limitations (for example it may only support baseline profile). HW-assisted encoding is enabled through the use of a specific encoder (for example {{{nvenc_h264}}}). Filtering hw-assisted processing is only supported in a few filters, and in that case you enable the OpenCL code through a filter option.
    46
    57There are several hardware acceleration standards API, some of which are supported to some extent by FFmpeg.