15000 kbps too high???

[karelj]

I have my win tv pvr 150 set to capture at 15000 kbps in order to get the best picture possible.
When I use TMPEnc DVD Author to create a disc it tells me that the bit rate is too high and that the dvd will be out of specification. The finished result looks great and it plays but a couple of discs have audio issues when I fast forward or rewind. The audio starts to skip when normal playback resumes and is corrected by hitting pause then play.
Is this an issue with the high bitrate or did I just have a couple of screwy burns???

[musher70]

yeah, a little too high.....
dvd spec is like 8000
MAX>>>.............

[redwudz]

From 'What is' DVD to the upper left:

Total:
Total bitrate including video, audio and subs can be max 10.08 Mbps (10080 kbps)

Or just for the MPEG-2 video 9800kbps. With that said, I would keep it about 10000kbps or lower. 15000kbps may be a little too high. It would be easy enough to test. Encode one at 10000kbps and see it it has the same problems.

It may also depend on your player if it can handle very high bitrates. Making DVDs that only marginally play is definitely not productive.

[FulciLives]

You also have to remember that in VBR and even in CBR modes the bitrate will sometimes spike a bit ... sometimes by as much as 500kbps ... so let us say you use MP2 audio at the max bitrate (which is 384kbps) then I would set the video bitrate to no more than 9500kbps so even with a bitrate spike here or there you should still be under 10500kbps which is within spec. The idea is to maximise the bitrate ... yes ... but you never want to cut it "too close" to the MAX or you will have playback issues.

Having said that though ... I never go above 8000kbps myself. Call it an "old" habit. Call it making sure the DVD is compatable amoung as many different DVD players as possible since some DVD players do not like DVD discs (especially home burned media) that gets too close to the MAX bitrate of the format. Anyways ... for what it's worth ... it's my method (never going over 8000kbps) and many people do the same.

I should point out one last thing though ...

Some people do capture MPEG-2 at a CBR of 15000kbps because that is the limit of most hardware MPEG-2 cards and it gives a nice "clean" capture that can then be further manipulated (video noise filters for instance) and then re-encoded using a true multi-pass VBR MPEG-2 software encode to standard DVD MPEG-2 specs.

But if you have no intention of doing that then go by what I said at the start of this post.

- John "FulciLives" Coleman

[vhelp]

If I may add (from experience) ..

When you experience hickups during a stand-alone dvd player test, if
your audio is MP2, (like what the Hauppauge and ADS hardware devices
are usually defaulted to) and you author as-is, then the final captured
MPEG-2 video file may or may not play properly, hence your hickup.

It may not even be your *very* high bitrate. But, its probably both,
your audio's encoded MP2 and high bitrate *AND* your stand-alone dvd
player.

FWIW noting here.. not all dvd players like MP2 encoded MPEG-2 videos.
Mine does. An Apex AD-1500, but many other brands/makes don't.

If all else fails, and you must continue with 15000 bitrate, then at
least consider capturing with an ES type setup..

where:

ES - meaning capture as separate video / audio (and you can mux them back
later, during audio conversions projects or dvd authoring, etc)

The capture sofware will create *.m2v and *.ac3 audio files. And when
you finished capturing, you can then MUX them back together using your
favorite dvd authoring software.

And, if all else fails, even with the AC3 audio, then its safe to say
that your stand-alone dvd player can't handle the very high bitrate.

Another FWIW noting here.. I do know (again, from actual experience) that
ADS DVD Xpress (Rev 2) device does allow captures with setup for AC3 audio
in real-time. I have done this many of times.

-vhelp 3976

[karelj]

I will be a bit stretched for free time this coming week, but I will try to do another capture from my DVR of the same program at 10000 kbps to see if this resolves the issue. I may also reduce the audio rate from 384 to around 200.
The discs in question did play fine in my coby player, but my GF's player and the player at work had issues.

I assume it would be better to capture at 15000 kbps then re-encode to 9800 than to capture at 9800??

Thanks to all for your responses.

[killerhex]

what would be the best bitrate for an 24-30min episode

[SerbianBoss]

max 9000 bitrate

[BJ_M]

max 9000 bitrate INCLUDING audio and even then I would go even a bit lower (8500)


i would capture the audio at the higher bitrate you are doing , then convert it to ac3 2 channel