What does AC3Filter do which ffdshow does not?

[FredThompson]

Is there any reason to use AC3Filter if ffdshow is installed? Does it provided an additional functions?

I ask because ffdshow has active development, AC3Filter seems dead (following the OSS source arguments.)

[Doom9]

I've had problems with 5.1 AC3 in AVI with ffdshow until recently (on both NForce2 and Nforce3 rigs - using analogue 5.1 output on both). Now suddenly (perhaps it's the ffdshow version), 5.1 seems to be working (at least I get audio on the center channel, I haven't checked the rear channels yet).

But that mainly was my reason for using AC3filter instead of ffdshow to decode audio.

[Boulder]

AC3Filter is far from dead as you can also read from the AC3Filter thread here. People are testing an internal beta version at the moment.