![intervideo ac3 codec intervideo ac3 codec](https://tijacrack.com/wp-content/uploads/2021/03/AnyDVD3.jpg)
it's not too difficult, is it? just tell the mpc to read the avi header and then use the codec as defined in the avi header, not some other codec mpc seems to select purely by accident or by sheer caprice which sux, because the intervideo decoder doesn't allow to set sound volume in its settings and thus I was stuck with low volume and couldn't hear a goddamn thing. Now I got myself another file, this time the audio stream is encoded in ac3, wmp9 started to use ac3 filter from, which is just what I wanted, but mpc once again stubbornly refused to follow my wishes and started using intervideo mpeg2 decoder (iviaudio.ax) from my windvr 3 installation.
![intervideo ac3 codec intervideo ac3 codec](https://img.informer.com/pc/MPCP-v4.5-advanced-codec-settings.png)
I don't think it has anything to do with codec priority, because it is set systemwide and thus it would affect wmp 9 either, but it didn't, the only player that was unwilling to read the avi header to determine the codec was mpc.
![intervideo ac3 codec intervideo ac3 codec](https://www.progdvb.com/assets/templates/progDVB/images/manual/img97.png)
finally I had to unregister it to force mpc to use normal codecs. I tried to force mpc to use xvid or divx codecs, changed the header of the avi file to other codecs, wmp 9 reacted promptly,using either xvid or divx respectively, but mpc was stubbornly trying to use realmagic decoder, no matter what I tried to do. recently I got a video file which was encoded in divx, I started playing it in media player classic and all of a sudden I noticed that mpc was using Realmagic mpeg4 decoder which couldn't cope with the encoded stream and so playback was bad. I would like to know how media player classic decides which codecs to use for decompression of video/audio.