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> Feature Suggestion, Built in fixing of audio/video sync to prevent lip sync problems
markg
post Jul 7 2008, 09:39 AM
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G'Day Null_Pointer!

I just had an idea for a feature that I think would be worth adding to Web Scheduler Pro. I currently use VideoReDo to automatically do a Quick Stream Fix on all of my recordings after they have been completed. This fixes any lip sync issues that happen due to poor reception problems - especially important if the files are later burnt to a DVD.

What I think would be nice is if Web Scheduler Pro could automatically fix the audio/video streams to keep them in sync as the file is being recorded - this would prevent the need to have VideoRedo churn away at the disk after each recording and would also mean that we could watch recordings without lip sync problems without having to wait for them to finish and be fixed by VideoReDo. Of course, such a feature would also be very useful to those that don't have VideoReDo at all...

So what do you think? I suspect that it wouldn't be an easy addition, but I really think it would be great to have, so I would like you to at least seriously consider it!
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null_pointer
post Jul 7 2008, 12:20 PM
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QUOTE
I suspect that it wouldn't be an easy addition

you are correct smile.gif

This is out of scope for what WS is and does, WS is designed to reliably record the data directly from the TS to your hard drive, it does not edit the data or modify the data in any way. The reason for this is so that the data you end up with can be run through whatever tool you want to fix/remux/burn.
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Calvi
post Jul 7 2008, 02:48 PM
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You can use project X as a post capture task to fix all recordings immediately if you want.

I don't bother as the only time I run into issues is when burning to DVD as you say. In those cases its easy to run through PX or Vredo.
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vur
post Feb 3 2013, 10:35 AM
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QUOTE (markg @ Jul 7 2008, 10:09 AM) *
G'Day Null_Pointer!

I just had an idea for a feature that I think would be worth adding to Web Scheduler Pro. I currently use VideoReDo to automatically do a Quick Stream Fix on all of my recordings after they have been completed. This fixes any lip sync issues that happen due to poor reception problems - especially important if the files are later burnt to a DVD.

What I think would be nice is if Web Scheduler Pro could automatically fix the audio/video streams to keep them in sync as the file is being recorded - this would prevent the need to have VideoRedo churn away at the disk after each recording and would also mean that we could watch recordings without lip sync problems without having to wait for them to finish and be fixed by VideoReDo. Of course, such a feature would also be very useful to those that don't have VideoReDo at all...

So what do you think? I suspect that it wouldn't be an easy addition, but I really think it would be great to have, so I would like you to at least seriously consider it!


Further to the lipsync issue, since purchasing a new TV we have experienced (as have millions of others, world wide) that the video processing of the display causes it to lag the audio. It varies with the properties of the video and how the TV handles it, but is always within a certain range. Individual tolerance to it varies. Some displays have a an option to adjust for this that can be a set and forget adjustment that is good enough.

For the benefit of people with displays lacking this audio delay adjustment feature, I would like video processing software to incorporate an audio delay option that is applied AFTER they have corrected for poor reception problems. Indeed some do (including VideoReDo actually but at 3/1/2013 it cannot be used with batch processing, and DiGiTV-HD has it too.)

Our present solution has been to delay the audio by having our speakers 47 metres away from the seating position biggrin.gif


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