Tip & How-To about Philips DivX DVD Player

Set VirtualDubMod to Align Audio Frames across Interleaves for better sync

The default for the this program is Enable audio/video Interleaving with a 500ms pre-load in VirtualDubMod,this is the recommended value, it is not an offset this is done in the Audio Skew Correction the same is true for its older cousin VirtualDub.



This will set the Audio Frames to "Split across interleaves" which can cause the audio to go out of sync with the video even if the MP3 is set to CBR a problem most known with VBR audio on standalone DVD players that that DivX capabilities. This is one reason why the preferences are set to warn you about VBR audio this is a screendump from VirtualDub



It is said that if the AVI has Audio frames that are "Aligned on interleaves" it will always remain in sync even with a VBR MP3 audio track.

If you experience VBR MP3 problems you can turn off the MP3 ACM and use VirtualDubMod MP3 encoder under here the default preload for AVI audio is set to 500ms as shown this is the same in VirtualDub.



If you are going to re-encode the MP3 audio to AC3 the audio gets split across interleaves with the default values MP3 seems to Align with Interleaves itself .

However if you Enable Frame Mode the resulting AC3 will get "Aligned Across Interleaves" (you can't do this tweak in VirtualDub by Avery Lee)

Options -> Preferences -> VDubMod -> AVI -> Enable Frame mode.




If you are OK with this then you can re-encode the VBR audio MP3 to CBR dolby digital AC3 audio "Aligned Across Interleaves" and know that your audio frames will be aligned with the Interleaves and AV sync problems on your DivX enabled DVD players.are over.






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Forgoten pin number


I read that there is a factory reset that you can do. This will return the unit to how it was when it came out of the box.

Firstly you have to enable the diagnostic functions by quickly pressing the following sequence on the remote:

Left
Right
Yellow
Blue
Menu

Then on the Technical Information pages there will be a reset option. This clears everything - channels, favourites, PIN etc.

There will be a default PIN that comes pre-programmed in and the instructions should mention this.

Oct 01, 2009 | Audio Players & Recorders

1 Answer

Successful VBR audio conversion for AVI's with Standalone DVD DivX Players


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Feb 26, 2010 | Philips DivX DVD Player

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Sound lags picture


This can some times be caused by VBR audio encoded files as opposed to CBR audio some standalone DVD players will exhibit sound lag in this case. It is a good idea to re-encode the VBR to CBR audio this usually solved the problem.

Although this is usually with DivX (AVI) files that have been re-authored to DVD-Video I suggest that you convert all audio to CBR to avoid any such errors.

this conversion process it a bit of a long way around I know, but it does work!

1) Open video in VirtualDubMod or VirtualDubMP3 (if there is an index error this can sometimes fix it for you.

2) Ignore the error warning that the video contains vbr audio.
3) Extract audio as mp3 ("demux" in VdubMod or "save as wav", then rename to mp3 in VdubMP3).

4) Convert audio to wav with CDex

5) Open original video in VirtualDub, choose "direct stream copy" for video and "Wav audio" with "Full audio processing" with cbr mp3 compression (and interleaving with appropriate delay if out of sync) for audio.


You could also use several other methods including AVIDemux which uses VDub Mod or scan in the DVD-Video using TMPEnc v4.0 Xpress and applying a time lead OR lag however this doex not solve a progressive lag but can be used to reauthor a fixed error.

Feb 12, 2007 | Philips DivX DVD Player

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