Error after Multiplexing AC3 into MPEG2 with TMPGEnc...

[HAGGARD]

Hello,

I want to multiplex an AC3 audiostream into MPEG2, but after (simple)multiplexing with TMPGEnc I get error "1s packets can cause buffer underruns, the file might not be played correctly". Did I do something wrong???

I captured the video from my DV-cam in Pinnacle Studio 8 via Firewire. Then after editing, exported it to DV-AVI on my harddisk...
With virtualdub extracted the audio to WAV and Encoded it to AC3 using BeSweet...
Encoded the video to DVD compliant MPEG2 format (720x576/9800Kbps!!!(Superbit, eh!!! )) using the Video Only (Elementary System) setting in TMPGEnc...
Then Multiplexing the AC3 into MPEG2 also with TMPGEnc...
Authorised the movie to DVD with DVD Movie Factory 2 (Starts bugging me that it doesn't support AC3 streams...)
Then played it... seems to be ok!!!

Is the error an informal message, or does TMPGEnc try to warn me that there is something seriously wrong???

'HAG

[BJ_M]

9800Kbps is very high for tmpgenc which is known to spike bitrate as it is .. of course it will play on a pc .. but you may have problems on a standalone ..

[HAGGARD]

9800Kbps is very high for tmpgenc which is known to spike bitrate as it is .. of course it will play on a pc .. but you may have problems on a standalone ..

My (H&B DVD-5415S) Standalone player doesn't have any problems with superbit style encodings!!!! (H&B RULEZZZ )

I'm just wondering what the error in TMPGEnc means!!!

'HAG

[bugster]

If the authored files play OK from your HD then I wouldn't worry about it. I have seen this error when using the 'VCD header trick' with SVCD's and 99 times out of 100 it has been fine.

As for your bitrate, IIRC, 9800kbps is the MAX bitrate for a DVD stream including audio and video. So if your video alone is at this bitrate, adding your audio will take it out of DVD spec. Commercial Superbit DVD's are still within this spec so are playable in any DVD player, yours may cause problems but you won't know till you try it.

[HAGGARD]

As for your bitrate, IIRC, 9800kbps is the MAX bitrate for a DVD stream including audio and video.

Strange....
If I play the directors cut of "Das Boot", PowerDVD reports that video bitrate = 9.8Mbps and audio bitrate = 384kbps and this one isn't even a Superbit DVD!!! So this means that this DVD isn't compliant???

for standard (film, eg. 25 frames/second) a bitrate of 6Mbps is fine, but for (PAL) video signals 9.8Mbps is still not enough specialy with a lot of camera motion. The MPEG codec cannot handle the interlaced signal (blocking in encoded material)!!!

I could de-interlace the original but then the video looks choppy!!!

What is in your opinion the best video bitrate setting for PAL video signals???

greets
'HAG

[bugster]

Strange....
If I play the directors cut of "Das Boot", PowerDVD reports that video bitrate = 9.8Mbps and audio bitrate = 384kbps and this one isn't even a Superbit DVD!!! So this means that this DVD isn't compliant???

for standard (film, eg. 25 frames/second) a bitrate of 6Mbps is fine, but for (PAL) video signals 9.8Mbps is still not enough specialy with a lot of camera motion. The MPEG codec cannot handle the interlaced signal (blocking in encoded material)!!!

I could de-interlace the original but then the video looks choppy!!!

What is in your opinion the best video bitrate setting for PAL video signals???

greets
'HAG

PAL is 25fps, NTSCfilm is 23.976 and NTSC is 29.976.

As for bitrate, use the highest you can for the length of the film without exceeding the 9.8Mbps maximum. If you do exceed this value, some dvd players may have problems playing it. Also, DVD-r is more difficult for standalone players to read, requiring more re-tries and so slowing down the overall data rate that can be handled. Personally I stick with a max of 8000 for DV material, some people recomend even lower settings for safety.

Don't deinterlace DV source, you will get better quality leaving it interlaced.

As for what PowerDVD tells you, I think the DVD format has a field somwhere in the vob header (or is it in the .ifo, not sure) that informs the player what (max) bitrate was used for the following movie. It is probably this that PowereDvd is reporting rather than it actually measuring the movies bitrate. If the Author puts the wrong value in there, it will be reported incorrectly. To get the actual bitrate, drag a .vob file into bitrate viewer (tools section).

P.S, take a look here for basic DVD specs

https://www.videohelp.com/dvd