View Full Version : Why does DVD Architect want to recompress everything?


Chris Gotzinger
October 20th, 2009, 10:46 AM
I'm trying to put together a Blu-ray with DVD Architect 5.
I rendered out a short test video and audio file (both have identical file names).

The video was rendered with Main Concept AVC, Max Bitrate 38 MBit, Avg Bitrate 32 MBit.
If I go to Optimize Disc, it says in order to avoid recompression I need to "use a compliant MPEG-2 video file". I've set the project to AVC, and the recompression settings also say AVC, so what's that all about?

I rendered the audio file from Vegas as an AC3 Studio file .ac3.
Same thing, DVD Architect wants to recompress the audio, and to avoid recompression I need to "use a compliant PCM wave or an AC-3 audio file". Well I've got an AC-3 audio file, so what the hell?

Tripp Woelfel
October 20th, 2009, 08:01 PM
I don't know anything about DVD Architect, but one thing jumps out at me. It is asking you for a compliant MPEG2 file and you keep giving it AVC. AVC isn't MPEG2, it's MPEG4, also known as h.264. Both the format and codec are different.

Perrone Ford
October 20th, 2009, 08:25 PM
I'm trying to put together a Blu-ray with DVD Architect 5.
I rendered out a short test video and audio file (both have identical file names).

The video was rendered with Main Concept AVC, Max Bitrate 38 MBit, Avg Bitrate 32 MBit.
If I go to Optimize Disc, it says in order to avoid recompression I need to "use a compliant MPEG-2 video file". I've set the project to AVC, and the recompression settings also say AVC, so what's that all about?

I rendered the audio file from Vegas as an AC3 Studio file .ac3.
Same thing, DVD Architect wants to recompress the audio, and to avoid recompression I need to "use a compliant PCM wave or an AC-3 audio file". Well I've got an AC-3 audio file, so what the hell?

You have a couple of choices.

You cannot just use any old AVCHD file to burn to BluRay. It has to be in a specific format, just like Mpeg2 files being prepped for DVD burning. So, instead of using Mainconcept's encoder, choose the Sony AVC encoder, and choose one of the bre-built templates.

Or, you can use the Mainconcept Mpeg2 encoder and choose one of the BluRay templates. Either will work just fine in DVD Architect, and you won't have to recompress. But you cannot burn a high bitrate AVCHD BluRay from Vegas or from any other home burning application that I know of.

The audio does want to recompress for some reason. Not sure why.

Chris Gotzinger
October 21st, 2009, 04:09 AM
So, instead of using Mainconcept's encoder, choose the Sony AVC encoder, and choose one of the bre-built templates.
Well, that's a problem. Sony AVC crashes Vegas every time I try to render. Ever other codec works flawlessly :/

Now, I really didn't want to use MPEG2, is the maximum bitrate 48 MBit/sec? I have a feeling this will not suffice for the grainy material I need to encode but I guess I can try.

Tom Roper
October 21st, 2009, 10:32 PM
It's been a while since I used DVDA5, but as I recall, I was able to have it not re-encode the 5.1 audio by rendering out the audio in Vegas separately. Then when the movie file with audio was imported into DVDA5, I would point the selection of the audio track over to the separate audio file. It would thereafter smart render it without re-encoding.

I also found through trial and error, that the DVDA5 AVC video rendering although painfully slow and with not too many parameters to choose from, actually rendered with incredible quality, better than the encoders in Vegas, either the Mainconcept or Sony AVC. Although it is slow, and not too many adjustable parameters, there is one parameter that it does give you control over, the bit rate! It lets you choose whatever rate you want! I eventually settled for 18mbps, which meant AVCHD disks could play from regular DVD media in quite a few standalone blu-ray players.

With the Sony EX1 generated .mxf files, Vegas will smart render these very quickly, thus a blu-ray authored disk would go through only one re-encode, from mxf to AVC, by DVDA5. The quality of those disks were very high.

This was the best quality AVCHD method, better than mpeg-2, and better quality than the faster but poor quality low bitrate encoders in Vegas, (Mainconcept and Sony AVC).

Hope that helps. It's slow, but if you have the time for quality renders, it's better.

Chris Gotzinger
October 22nd, 2009, 04:53 AM
Tom,
thanks for the input. I think DVD Architect uses Sony AVC as well, but maybe it's a newer implementation?

Either way, I did a test render yesterday with MPEG-2 and 39 Mbit/sec constant video bit rate, and the results look great. And what's more, DVD Architect does not want to recompress, woohoo! At 39 MBit, the film will fit on a 25GB Blu-ray and fill it out almost all the way.

Even the audio works without recompression now. I had split it up into a separate .ac3 file before as well, so I'm not sure why it works now. But it does, so that's great.

The only problem that remains as of now are the black and white levels. As suggested in the other thread I started, I kept everything within 0 and 100 IRE. But once the video is rendered and played back, I get washed out colors with no proper white and black. Mainconcept MPEG-2 was set to 709.

Tom Roper
October 22nd, 2009, 09:26 AM
I think DVD Architect uses Sony AVC as well, but maybe it's a newer implementation?

It seems to be a 'different' implementation. I don't believe you can choose 18mbps AVC with the Sony AVC encoder in Vegas (as I recall), at the least it won't smart render in DVDA5 at anything other than the template settings.

And yes, 39mbps mpeg-2 is going to look great on 25GB Blu-ray media for sure, but 18mbps AVC (from DVDA5 encodes) is about nearly as good, a lot more efficient, and you can put it on AVCHD (regular DVD blank media) and because of the low bit rate plays back on a lot of Blu-ray standalones, with full menu functionality, 24p, chapters etc.

For proof of concept, I actually just use TSMuxer and AVCHD-ME to put native .mxf onto a USB flash drive, or DVDA5 and AVCHD-Patcher to play from a PS3 with full menus, even 24p playback, from a USB flashdrive. It's so much faster than burning rewritable BD for small projects, and at any bitrate you want from the flash drive. The native .mxf plays back at 30-40 mbps VBR on the PS3. That's just another subject, there are so many playback options now, but unless it is required due to project size, the one I avoid is BD media due to expense and slow burns.

Tim Polster
November 26th, 2009, 09:43 PM
The only problem that remains as of now are the black and white levels. As suggested in the other thread I started, I kept everything within 0 and 100 IRE. But once the video is rendered and played back, I get washed out colors with no proper white and black. Mainconcept MPEG-2 was set to 709.

I see this with Adobe Encore when I have tested its encoding engine.

Flat colors with a milky grey look.

When I use files encoded from Edius, the blacks are correct.

I think Encore uses Mainconcept as well. Maybe there is a setting somewhere to change?

Randall Leong
November 30th, 2009, 12:05 PM
I'm trying to put together a Blu-ray with DVD Architect 5.
I rendered out a short test video and audio file (both have identical file names).

The video was rendered with Main Concept AVC, Max Bitrate 38 MBit, Avg Bitrate 32 MBit.
If I go to Optimize Disc, it says in order to avoid recompression I need to "use a compliant MPEG-2 video file". I've set the project to AVC, and the recompression settings also say AVC, so what's that all about?

I rendered the audio file from Vegas as an AC3 Studio file .ac3.
Same thing, DVD Architect wants to recompress the audio, and to avoid recompression I need to "use a compliant PCM wave or an AC-3 audio file". Well I've got an AC-3 audio file, so what the hell?

For the former, I discovered that the MainConcept AVC files as rendered in Sony Vegas will never be compliant with the DVD Architect Pro's AVC protocol regardless of the resolution and bitrate. As such, you ended up transcoding those files to MPEG2 in Vegas before you authored the disc. Otherwise, if you had allowed DVD Architect to recompress the Vegas-processed MainConcept AVC file, you would've found that it could take up to 20 to 30 minutes just to recompress a 1-minute clip. For files imported from Vegas, the only types of AVC videos that are compliant with the DVD Architect AVC engine are those files which had been rendered using the Sony AVC encoder to AVCHD files which are of only 1440x1080 interlaced (50i or 60i) resolution with a 1.3333 anamorphic pixel aspect ratio (1920x1080 AVCHD files are not compliant when rendered in Vegas). If you want to author high-bitrate, full 1920x1080-resolution AVC files onto Blu-Ray using DVD Architect Pro, you will need to use a non-Sony video editing product to render the AVC video in order to avoid recompression.

In addition, if your target Blu-Ray disk size is less than 25GB and the overall bitrate of your imported AVCHD video clips is higher than 18 Mbps (or the overall bitrate of an imported MPEG2 video clip is higher than 28 Mbps), the video will be recompressed.

For the second, the AC3 Studio encoder makes AC-3 files that are compliant only when used in a standard-definition (720x480i60 or 720x576i50) DVD (not Blu-Ray) project. These files are not Blu-Ray compliant, and thus require recompression. (After all, AC-3 files made using the AC3 Studio encoder are intended for use in DVD Architect Studio, whose most recent release still supports only standard-definition authoring.) You will need to use the AC3 Pro encoder in order to make a Blu-Ray compliant AC-3 audio file for use in DVD Architect Pro. Otherwise, if your copy of Vegas Pro is still in the trial period, and you need to make Blu-Ray compliant audio, you will need to render the audio from the original video clip(s) to Linear PCM files (using the Sony Wave64/.w64 format) in Vegas before importing them into DVD Architect Pro since you cannot use the AC3 Pro encoder without paying for and activating your copy of Vegas Pro.

Chris Gotzinger
December 1st, 2009, 03:23 AM
In addition, if your target Blu-Ray disk size is less than 25GB and the overall bitrate of your imported AVCHD video clips is higher than 18 Mbps (or the overall bitrate of an imported MPEG2 video clip is higher than 28 Mbps), the video will be recompressed.
It's quite the coincidence that you wrote this post yesterday. Because today I tried to create a Blu-ray project for test reasons (just to make sure my workflow is correct).

And even though "Optimize Disc" tells me that my 39 Mbit MPEG2 files do not need recompression, when I try to make a Blu-ray disc, the software tells me that the bit rate is above 28 Mbit and thus too high.

I'm so p*ssed off about this POS software now. Blu-ray specs clearly allow bit rates up to 40 Mbit for the video stream. There are plenty of commercial Blu-ray MPEG2 discs with constant video bit rates of 40 Mbit. Sony is the fricking inventor of Blu-ray and their authoring program can't handle high bitrate content?

It's so ridiculous, I finally found a way to stop DVD Author from wanting to recompress. And when I try to make the disc it tells me it wants to recompress. WTF, this is so ridiculous.

Perrone Ford
December 1st, 2009, 08:00 AM
Chris,

There is only so much available for consumers to write the BluRays. The REAL software that has access to the full specs costs a LOT of money. Both Sony's and Sonics Pro level authoring programs are around US$16,000.

So while its frustrating, it's livable.

Randall Leong
December 1st, 2009, 03:20 PM
I'm so p*ssed off about this POS software now. Blu-ray specs clearly allow bit rates up to 40 Mbit for the video stream. There are plenty of commercial Blu-ray MPEG2 discs with constant video bit rates of 40 Mbit. Sony is the fricking inventor of Blu-ray and their authoring program can't handle high bitrate content?

Actually, Sony did not originate the Vegas program suite. Sony acquired the software through its purchase of Sonic Foundry's media software division back in 2003. As such, the Blu-Ray support in Vegas and DVD Architect Pro is rather half-baked (though still better than that of many other software authoring suites in its price range, which always recompress HD video no matter what).

And even though "Optimize Disc" tells me that my 39 Mbit MPEG2 files do not need recompression, when I try to make a Blu-ray disc, the software tells me that the bit rate is above 28 Mbit and thus too high.

That's a bit strange. I get a similar warning--but it specifies that the bitrate ceiling mainly applies if I'm using a red-laser disc (recordable or rewritable DVD). This means that recompression is recommended, but is forced upon if I specify a disc capacity of 8.5 GB or 4.7 GB in the Blu-Ray project properties. (The available disc sizes for Blu-Ray projects in DVD Architect Pro are 50 GB, 25 GB, 8.5 GB and 4.7 GB.)

Chris Gotzinger
December 1st, 2009, 03:36 PM
@Perrone:
But that's the funny thing about it. I don't need anything fancy, with BD-J and whatnot. I don't even need menus. But I DO NEED good image quality.
There is simply no reason for them to cripple the bit rate. I'm never gonna buy a $16,000 product.

@Randall:
Pretty sure I was set to 25GB, I'll have to re-check.

Chris Gotzinger
December 1st, 2009, 03:48 PM
Okay, I checked again.

The warning reads:
"The overall bit rate for "video1" is greater than 28 Mbps. The overall bit rate is too high for burning Blu-ray onto a DVD."

It does sound a bit strange, but right below it leaves no question as to what media type I've selected:
"Estimated project size: 1923 MB (8.0% of 25,000 GB media)"

And I cannot click NEXT or FINISH because they're greyed out.

Tom Roper
December 1st, 2009, 06:22 PM
Chris, if as you said you don't need menus, use TSMuxer. It's free. Maybe you can't afford the price?

And if you do need menus, use multiAVCHD. It's also free.

Both programs will accept your bit rates, even if they are non-compliant.

I have never seen 40 mbps CBR mpeg encodes on commercial disks, they are always variable, but I suppose it's possible.

If you let DVDA encode to AVC at the combined 28 mbps average bit rate, you will see it spike to 40 mbps which is the max for Blu-ray. The DVDA AVC encoder is VBR and does a good job, much better than any of the AVC encoders in Vegas. (and slower). And I think you should be mindful that not all Blu-ray players read BD-R/RE disks at the same bit rate as a commercial Blu-ray ROM.

The DVDA AVC encoder is very good. DVDA will also accept compliant 5.1 audio from the Sony Pro encoder in Vegas. DVDA also accepts compliant 25 mbps mpeg-2 video Vegas if you rendered to the Blu-ray template settings without deviating from the default parameters.

Render the video and audio separately, even if your mpeg-2 video contains audio, you can redirect it to the other audio 5.1 elementary stream from Vegas Pro AC3 encoder that you encoded separately.

I've been through all of this with Vegas and DVDA. Everybody makes the same mistakes, trying to render something from Vegas that deviates from the Blu-ray template, then b!tches when DVDA insists on recompressing it. The better option (if you are going to use DVDA at all) is to have Vegas keep the video in the native format (no recompression), then let DVDA render it out to AVC, only one recompression that way. I agree, you don't want to recompress twice, once in Vegas and again in DVDA. But unless you strictly render the video from Vegas using the unmodified Main Concept mpeg-2 Blu-ray template parameters, that's exactly what will happen when it gets to DVDA, recompression.

Or, just don't use DVDA, use TSMuxer and or multiAVCHD to author your blu-ray project. Either one accepts just about anything, even the non-compliant streams. Whether you will get a disk that plays in every Blu-ray player is doubtful, but it will no doubt play in some, like the PS3.

Tom Roper
December 1st, 2009, 06:28 PM
That's a bit strange. I get a similar warning--but it specifies that the bitrate ceiling mainly applies if I'm using a red-laser disc..

The warning is there for BD25/50 as well. Again, DVDA even if you stay below the recommended ceiling, will peak at up to 40 mbps. You've got plenty of bit rate headroom, especially considering that Blu-ray is 4:2:0, with AVC you don't need more. You can probably get by with a whole bunch less, but I know...you want to see the big numbers that the commercial disks have. You will, at 25 mbps.

One of the things I've found, is I can let DVDA recompress to AVC at 18 mbps, with peaks to 30-34 mbps, ON red laser DVD media, and have it play back without skipping and stuttering on many Blu-ray players. I've seen these DVD disks playback smoothly on Samsung, Panasonic and Sony players to name a few. You can't remotely get away with that using mpeg-2. For all but the PS3 which can 2x double spin a DVD for a higher read rate, high bit rate mpeg-2 (even 25mbps) chokes most any of the standalone Blu-ray players I have tried. But not AVC 18mbps VBR, and you get a nice peak headroom much higher.

Bill Sepaniak
December 1st, 2009, 09:31 PM
Here are the steps I have been using to get DVDA not to recompress using an MPEG2 workflow:

1. The Source files were quicktime 24p;
2. Source files are encoded in Main Concept Reference using the following settings (not the template settings):

A. MPEG-2 : 2 Pass
B Blue Ray(HD) / NTSC
C. Bit rate: variable : target: 20mbs - max: 27mbs
D. Frame rate: 24 progressive
E. Audio: MPEG audio: 224kbps

3. Main Concept will convert the quicktime into a .mpv (video file) and a .mpa (audio file). It may take some time to render this out. I just finished an 1:53 show. The quicktime master file was 66 gigs, and it was an overnight render.

4. Right click on the .mpv file and rename the file to change the extension to .mpg. DVDA doesn't like .mpv.

5. Open the .mpa (audio file) in Sound Forge and save it as an AC-3 and put it in the same folder where your re-named .mpg file resides.

6. When you launch DVDA, open the preferences, and make sure that all of Blueray video settings match the settings that were used when you compressed the source file in Main Concept. Since your .mpg file was compressed with a variable bitrate, use the maximum bitrate setting for that file. For the show that I just did with the 20-27mbs variable bitrate, I used 27mbs as the DVDA bitrate. The same with the audio: make sure it is AC-3 Dolby and it matches what you converted in Sound Forge. If any of the settings don't match, DVDA will want to recompress.

7. Drop the .mpg and the AC-3 files on the time line, select Make Blueray Disc, and just follow the steps in the Blueray burning wizard. If all the video and audio settings in the files match what you selected in the preferences, there should be no recompression.

I have done 5 projects over the last 10 days using the above workflow, and they have all come out without a hitch with no recompression.

However, as with most things in life, " ... your mileage may vary ..."

Chris Gotzinger
December 2nd, 2009, 08:00 AM
Thanks for the info, Tom. I've found a program that does what I want for $100. It's called TMPGEnc Authoring Works, it accepts my high bit rate MPEGs without recompression. It also accepts 5.1 Dolby or PCM. That's all I need.

I have never seen 40 mbps CBR mpeg encodes on commercial disks, they are always variable, but I suppose it's possible.
There are few. If you look at the list in this thread (starting at post #2), you'll find a bunch of IMAX discs use 40 Mbit CBR:
NEW Unofficial Blu-ray Audio and Video Specifications Thread - AVS Forum (http://www.avsforum.com/avs-vb/showthread.php?t=1155731)

There are other MPEG discs with very high average bit rates, for example:
Click (2006) = 35.71 MBit
The Crow (1994) = 34.43 MBit

IMAX movies are short, so there's no reason to use VBR and try to save space. The same is true for my film. It fits on 25GB at a maxed out bit rate, so why not go for the least compression possible.

C. Bit rate: variable : target: 20mbs - max: 27mbs
Thanks for your workflow, Bill.
I added grain to my film, and MPEG @ 20 Mbit avg, 27 Mbit max would be too compromising for that kind of footage. I do understand that this would work though, because it stays below the 28 Mbit that DVDA hates so much.

Tom Roper
December 2nd, 2009, 08:36 PM
I've always liked TMPGEnc and other simple to use (Pegasys) products, and have used DVD Author, the predecessor to Authoring Works, but in the end, it's a consumer product that doesn't grant a Dolby license for commercial use. That and the BDMV output is mpeg-2 only.

Also the reason to not go for an always-maxed CBR bit rate is that not all Blu-ray players can avoid choking, since a number of Blu-ray standalone players can't read BD-R/RE media (if at all) at the same speed as BD-ROM. It may just come down to who you are targetting your collaboration toward. For compliancy with the masses and widespread distribution, compatibility will not be assured, but that's an unfortunate truth for all BD-R/RE disks anyway. Where we just want a disk for our own personal playback, it matters not of course, but the whole reason I use Blu-ray is for distribution, since for most home users, it's simpler and probably preferable to use one of the media players like the WD TV or Popcorn Hour, and the ever growing list of media players being spawned by the abysmal failure of Blu-ray to attract enthusiasts outside of people just using them to watch Hollywood commercial titles.

Randall Leong
December 29th, 2009, 10:05 PM
Okay, I checked again.

The warning reads:
"The overall bit rate for "video1" is greater than 28 Mbps. The overall bit rate is too high for burning Blu-ray onto a DVD."

It does sound a bit strange, but right below it leaves no question as to what media type I've selected:
"Estimated project size: 1923 MB (8.0% of 25,000 GB media)"

And I cannot click NEXT or FINISH because they're greyed out.

I re-checked this again, and discovered that the total size of your video file(s) is simply too small in size to be burnt onto a compliant Blu-Ray disc even with the higher 39 Mbps MPEG-2 bitrate. In my experience with DVDA I needed my videos to occupy at least 8.0 GB in post-authoring size in order to create a compliant Blu-Ray disc on single-layer 25GB media. Your total video files took up less than 2.0 GB, which is much too small for a compliant BD.

In other words, DVDA will not let you author a Blu-Ray disc whose total actual data size is less than the next-smaller project size (8.5GB, in this case). Sony just does not want you to leave 22GB worth of blank, unusable space on a BD-R. Therefore, the Blu-Ray project size should be set to the size that's closest to your particular video (in this case, 4.7GB--note that the "disc sizes" are the project sizes, not the type or capacity of the discs). Only after the disc creation is complete may you burn the image onto BD-R.

Randall Leong
December 29th, 2009, 11:20 PM
I also found through trial and error, that the DVDA5 AVC video rendering although painfully slow and with not too many parameters to choose from, actually rendered with incredible quality, better than the encoders in Vegas, either the Mainconcept or Sony AVC. Although it is slow, and not too many adjustable parameters, there is one parameter that it does give you control over, the bit rate! It lets you choose whatever rate you want! I eventually settled for 18mbps, which meant AVCHD disks could play from regular DVD media in quite a few standalone blu-ray players.

{snip}

This was the best quality AVCHD method, better than mpeg-2, and better quality than the faster but poor quality low bitrate encoders in Vegas, (Mainconcept and Sony AVC).

Hope that helps. It's slow, but if you have the time for quality renders, it's better.

Tom,

I have used this encoder on several of my personal BD-R discs. I found that it works best if the videos to be (re)compressed were lossless or uncompressed AVI files or AVC/AVCHD videos. Transcoding an MPEG-2/HDV file to AVC using this encoder isn't quite as good as going from lossless/uncompressed or AVCHD to AVC, but still better than recompressing (as opposed to smart rendering) an MPEG-2/HDV file into another MPEG-2/HDV file.