audio stream delay

len0x · 12th October 2004, 13:26

How does it work I wonder: when you specify the delay does VDub(Mod) add/remove samples from audio stream, so that if you demux the audio from a synched source then you don't have to specify the delay if you neede to mux it again? Thanks.

fccHandler · 12th October 2004, 18:59

Well, I know that VirtualDub does apply the skew amount when you use its "Save WAV" function (i.e., the resulting WAV will have samples added or removed). I'm not sure about VirtualDubMod's "demux" function though.

len0x · 12th October 2004, 19:02

Actually now that I think of it: its must be added in the resulting AVI anyway otherwise AVI would have to contain delay in it. So demuxing will have those samples as well...

Matthew · 12th October 2004, 23:50

nandub/vdub/vdubmod adds junk data (0s) in 1152 bytes increments. These 0s are in the mp3 when using either "save wave" or "demux". The former just has the 58 wave header as well.

12th October 2004, 13:26	#1 \| Link
len0x I'm afraid we've to stop Join Date: Mar 2003 Location: Amongst mad people Posts: 5,398	audio stream delay How does it work I wonder: when you specify the delay does VDub(Mod) add/remove samples from audio stream, so that if you demux the audio from a synched source then you don't have to specify the delay if you neede to mux it again? Thanks. __________________ Gordian Knot Family: Gordian Knot: website, download Auto Gordian Knot: Website and download, tutorial, FAQ

12th October 2004, 18:59	#2 \| Link
fccHandler Registered Jedi Join Date: Jan 2003 Location: Georgia, U.S.A. Posts: 733	Well, I know that VirtualDub does apply the skew amount when you use its "Save WAV" function (i.e., the resulting WAV will have samples added or removed). I'm not sure about VirtualDubMod's "demux" function though. __________________ May the FOURCC be with you...

12th October 2004, 19:02	#3 \| Link
len0x I'm afraid we've to stop Join Date: Mar 2003 Location: Amongst mad people Posts: 5,398	Actually now that I think of it: its must be added in the resulting AVI anyway otherwise AVI would have to contain delay in it. So demuxing will have those samples as well... __________________ Gordian Knot Family: Gordian Knot: website, download Auto Gordian Knot: Website and download, tutorial, FAQ

12th October 2004, 23:50	#4 \| Link
Matthew jdgljlfljg Join Date: Jan 2002 Location: Tony Abbott's electorate Posts: 1,393	nandub/vdub/vdubmod adds junk data (0s) in 1152 bytes increments. These 0s are in the mp3 when using either "save wave" or "demux". The former just has the 58 wave header as well.