LAV and Haali splitter preference?

I'm trying to have LAV Filters installed at the same time as Haali Media Splitter (needed for eac3to/dss2), and use LAV whenever possible (as it supports some things HMS does not). While they are both technically "installed", and I paid careful attention not to check any of the boxes when installing HMS, it's still being used as the preferred splitter. So, how do I set things up so that LAV is used by default over HMS where possible? I thought that Win7DSFilterTweaker would fix the issue, and set "LAV Video/Audio" wherever applicable, but this appears to only affect the preferred codec and not which splitter to use. I also looked at LAV and HMS settings for any "merit" or preference settings, but I can't seem to find any such settings in either. Any ideas?

You probably want , where you can reduce the merit for Haali. (By default, LAV is slightly higher than Haali.) Win7DSFilterTweaker only sets preferred decoders, and doesn't touch splitters.

If you are using MPC with LAV filters, I think you can add the LAV filters as "Prefer" and the Haali Splitter as "Block" to MPC in the external filters section, so it won't use Haali as the splitter when playing videos through MPC, but will leave it unaffected for eac3to. Ideally you would use MPC as the front end only with all its splitters and decoders disabled, so it uses LAV instead.

Yes, you would need run the LAV Filters installer after HMS, and have it set itself as the source filter for formats you want it used instead of Haali. Haali always sets itself as the default source filter for all supported formats whenever it is installed.

It always sets itself as preferred for Matroska, not for the other formats (if unchecked). You can easily change preferred splitters with .

Ran into another problem now. If I try to play any avs script with both audio and video streams in a DirectShow player (e.g. MPC-HC; GraphStudioNext), the audio will play and the video will not render. The problem is, I think, that LAV is still inserted in the render path, trying to take this raw YV12 video and 'decode' it (or ideally pass-through assuming YV12 output is checked), which it can't seem to handle, and rendering fails. A quick look at LAV's video options doesn't reveal anything for raw YV12. Strangely, this doesn't happen when there is either no audio or no video, which leads me to believe it's an issue with the interleaved A/V requiring a splitter (where it chooses LAV), which then forces video decoding. For example: Code:

You require a VFW YV12 decoder like FFDShow, Divx, Xvid, Helix, etc to output Avisynth YV12 as-is to most renders. madVR is an exception, since it has built-in support for raw YUV VFW input from Avisynth.

You could also use LAV Splitter as a source filter for the AviSynth scripts, it would then load LAV Video to properly deal with the YV12 video, and ensure compatibility with all renderers.

^ Either AviSource, OR DSS2Mod.