The following list gives an overview of parts in ffdshow that are multithreaded and thus show an improvement when run on a multi-core CPU:
libavcodec's
MPEG-1,
MPEG-2, and H.264 decoders are multithreaded. The number of cores is automatically detected during ffdshow setup but can be configured under “Decoder options” → “Number of decoding threads”. This setting has no effect on Pentium 4 HT CPUs.
Yadif deinterlacer is multithreaded. No configuration is needed.
The resize filter is fully multithreaded. No configuration is needed.
High quality RGB conversion is multithreaded. No configuration is needed.
With “Queue & misc” → “Queue output samples” activated, acceleration using multithreading is enabled. You may even see some benefit on a single-core CPU.
Rendering of subtitles' glyph is processed by a background thread.
