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View Full Version : Ac3 | ogg | ogg 5.1 questions and ideas


Apfelstruhdl
22nd March 2002, 13:20
wheni play a thx-trailer as vob file in powerdvd xp i get full real surround sound. But when i mux the same ac3 in an avi file and play this in a powerdvd i just get dolby surround output which is not nearly as good as real surround.
the same in all other directshow based players like bsplayer or mplayer2.
1. does powerdvd also use the directshowfilters for avi playback?
2. is there a directshowfilter which can give me real 4 or 6 channel output? (the normal intervideo and cyberlink filters doesn't seem to have this option. both just have the dolby surround option.


ogg 5.1:
is ther a way to play ogg 5.1 streams with winamp cause the nullsoft vorbis plugin can't handle them. i always get : "can't build secondary buffer".
and with my soundcard (terratec dmx xfire 4channel) i get some strange effects when playing an ogm with ogg 5.1. the front channels are on the front left- and the rear channels are on front right output channel.
will this be fixed in a future release of the oggds filters?

ogg:
is it possible to use the channel coupling feature of vorbis for different languages?
Because a stream in english and for example in german are in most parts the same except the parts with speech. so you would need 4 channels that are together encoded and then the possibility to play only two channels at once and the function to switch to the other two channels of the other languages. that would be for example two front left and two front right channels that are coupled but played seperatly.

This was all i think i'm wondering about at this moment. ;-P thanx for replies.:D

MaTTeR
22nd March 2002, 18:17
(the normal intervideo and cyberlink filters doesn't seem to have this option. both just have the dolby surround option.
Have you downloaded the audiofilters.zip from Doom9's audio section in the last 3-4 days? If not, please do so and install the InterVideo filter. The IV filter does indeed support 4ch or 6ch analog output but it might not support your card properly.

is ther a way to play ogg 5.1 streams with winamp
Peter(PP) is currently working on a multi-channel plug-in to address the channel mapping issue within WinAmp. Not sure how far his progress has come though. Have a look in the A/V formats forum on here and you will see how we are currently playing true 5.1 Ogg Vorbis files.


is it possible to use the channel coupling feature of vorbis for different languages?

This is currently being discussed in the Direct Show forum at PowerDivx. Feel free to jump in the conversation.
http://www.powerdivx.com/phpbb2/viewtopic.php?t=382

EDIT- Why do you want to use PowerDVD to playback your Divx/Xvid movies with AC3? Alot of other players like PowerDivx, Zoom Player and BSplayer offer AC3 support and are more flexible.

Apfelstruhdl
22nd March 2002, 18:32
thx for replies

p.s. i tried using powerdvd as this was only player i got 4channel output normally i use bsplayer and will use it if the intervideo filter works:rolleyes: