Just tried out Xvid and Ogg direct show filter

[ReferenceDivx]

From what I've seen I'm really impressed with the quality of this new standard in video and audio quality. I muxed a video clip at 23.976 with an ogg audio file encode at 96. The audio and video seemed to stay the same througout the video. I was even able to seek in the video.

My only question is how to add a 27ms delay to the audio? I believe I would have to add it to the wav file before i make an ogg file. But besides that one thing, I was very impressed.

My system:
Windows XP
Ogg DirectShow Filter Version 0.9.8.2(last updated 31.01.2002)
Windows Media Player 8
Latest Xvid build

[MaTTeR]

52 people have viewed this thread. Nobody can answer the question about the delay?

[ChristianHJW]

BeSweet can take the delay into account on transcoding to MP3, but i dont think HeadAC3he can do right now when transcoding AC3 to Vorbis.
But it should be possible to use BeSweet to create a WAV with delay already respected and encode to Vorbis using OggDrop or similar ....

[MaTTeR]

D A,

Would it be possible to build the delay into the Ogg file somehow from HeadAc3he? Perhaps just a text field like Vdub provides would work great.

Many Thx,
MaTTeR

[Synth]

In virtualdub you can delay (decrease) or speedup (increase) the audio sync timing...

Audio -> Interleave -> Audio skew correction

As for Besweet, I think it may be "better" to add the delay when actually muxing the video + audio streams in virtualdub/nandub than doing it before hand in Besweet or other program.

I use the exact delay specified by dvd2avi outputted raw ac3 track in the above virtualdub function, and get perfect syncying after performing ivtc (29.97 -> 23.976) internally in avisynth.

Since there is no lame directshow decoder currently (and I dont like the idea of using Radium Mp3 codec) I gonna try ogg as soon as my first xvid rip is completed.

[MaTTeR]

Originally posted by Synth
In virtualdub you can delay (decrease) or speedup (increase) the audio sync timing...

__I'm aware of this but it isn't what I was looking for.

As for Besweet, I think it may be "better" to add the delay when actually muxing the video + audio streams in virtualdub/nandub than doing it before hand in Besweet or other program.

__I'm tired ATM and am not thinking clearly..so could you explain why?

I use the exact delay specified by dvd2avi outputted raw ac3 track in the above virtualdub function, and get perfect syncying...

__Yes we all get perfect sync using this method. This does not work for Ogg files however.

Since there is no lame directshow decoder currently (and I dont like the idea of using Radium Mp3 codec) I gonna try ogg..

__Why not use the best MP3 encoder out..LAME 3.91. You'll find it's far superior to Radium. Ogg is the future:)

Thanks to everwicked for pointing me to the AC3 Delay cutting utility. This utility will make the delay of an AC3 file to 0(no delay). After that you just transcode the file as normal and dont worry about the delay at all:D

[Synth]

In virtualdub you can delay (decrease) or speedup (increase) the audio sync timing...

__I'm aware of this but it isn't what I was looking for.

Isn't this the same as adding the delay using say besweet?

As for Besweet, I think it may be "better" to add the delay when actually muxing the video + audio streams in virtualdub/nandub than doing it before hand in Besweet or other program.

__I'm tired ATM and am not thinking clearly..so could you explain why?

Well it isn't a fact as such but my thinkin is that it *might* be less prone or eliminate syncying errors (assuming you choose the correct delay in the first place) since the delay is being added with respect to the videostream and not independently like the other solution.

I use the exact delay specified by dvd2avi outputted raw ac3 track in the above virtualdub function, and get perfect syncying...

__Yes we all get perfect sync using this method. This does not work for Ogg files however.

Hmm...how do you get perfect sync then with ogg? By trial and error?

Since there is no lame directshow decoder currently (and I dont like the idea of using Radium Mp3 codec) I gonna try ogg..

__Why not use the best MP3 encoder out..LAME 3.91. You'll find it's far superior to Radium. Ogg is the future

Well I have been using LAME 3.91 for encoding all this time...just when it comes to playback you have to use either the windows media mp3 codec which is limited to 56k bitrate I belive, or the Radium codec.

[Synth]

Originally posted by MaTTeR


Thanks to everwicked for pointing me to the AC3 Delay cutting utility. This utility will make the delay of an AC3 file to 0(no delay). After that you just transcode the file as normal and dont worry about the delay at all:D

Mind sharing this program with the rest of us? :)

[MaTTeR]

Here's the link to everwicked's great HOW TO

http://www.everwicked.com/modules.php?op=modload&name=Ogg_Content_Creation&file=index

You'll find the software and instructions in the guide :)