[noggin]

If you do this in DVDVideoCodecFFmpeg.cpp you either use whatever version I had for Gotham or it does not show any effect when being used with vaapi. Current version runs filter on its own thread which could improve things. Not tried myself yet.

Got a bit further and it seems to be working - but dropping/skipping a lot of frames (possibly more with "complex" rather than "simple" coefficients in W3FDIF though I may be wrong) Suspect I may not have the CPU power for entirely software everything.

Currently using (and I know it may not be right for half rate de-interlacing in AUTO as I'll be passing "interlace" rather than "1" to YADIF) :

Code:

if(flags & FILTER_DEINTERLACE_HALFED)
      m_filters_next = "yadif=0:-1";
    else
      m_filters_next = "w3fdif=complex";

    if(flags & FILTER_DEINTERLACE_FLAGGED)
      m_filters_next += ":interlaced";

Am using standard XBMC github source - with software decoding (to force software de-interlacing)

If I want to use VAAPI decoding and Software deinterlacing should I use this github source : https://github.com/FernetMenta/xbmc ?