The elecard decoder is software based. You can achieve better PQ from a hardware based decoder but I've never compared the two side by side.
eswrite,
To my knowledge you are correct. Dscaler is something we decided to integrate we when were developing the software and determining the use of MPEG-2 decoders/filters for playback.
It has to do with the media types supported on the output of the MPEG2 Video Decoder filter. Elecard is the only one that supports a format that is compatible with the DScaler Deinterlacing DirectShow Filter's input.
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