Kimberly,

Is it possible to MIX 2 different codec inside BD Disc?
I usually only use AVC recently...

*Oh, and Happy New Year too to all friends in SCS Forum :)
Already in 2015 here...

Set

When you say mix codec inside a Blu-ray burn - you mean source it. Of course, you can bring Mpeg2 elementary stream, AVC, and Sony MXF. Problem is that in the authoring the disc creation is going to churn everything to one value or another.

So quality loss. If you source Mpeg2, then compile AVC - you will have quality loss.

Only send streams to DVDAPro that you want it to compile to keep highest quality.
Of course SONY MXF will best render to Mpeg2 stream because MXF is just a container for Mpeg2.

If the video data has been physically compressed to 9.8 at some point then recompressing "up" certainly will NOT restore the original quality. In fact, no matter how high a bitrate used, the extra recompression will degrade the quality. Leaving it at 9.8 will look better than changing it to 18.

That's the confusing part. The source material is BD compliant AVC or MPEG-2 and its bit rate is 18+ mbps. It shows as No Recompression Required when I optimize the BD disk.

When I add the BD compliant media in a Playlist, it shows the bit rate as 18 mbps or whatever.




When I add the same BD compliant media as a Music/Video Compilation, it shows a max bit rate for the BD as 9.8 mbps, which is the max for DVD but not for BD. I can force DVD-a to recompression "up" to 18+ mbps but the media is already 18+ mbps. This is why I'm wondering id DVD-A is just giving a bogus message on Music/Video compilations for BD projects . . .

@set:

Is it possible to MIX 2 different codec inside BD Disc?

Normally I use only BD compliant MPEG-2 files of the same bit rate in my BDs. But was a test project so I'm messing around with AVC and MPEG-2 of various settings. I think I'm going to stick to MPEG-2 though as DVD-A seems to like markers better with fewer machinations.

Regards,

Kimberly

This is exactly what I have preaching for years Kimberly. Mpeg2 codecs are the least problematic to achieve highest quality in Blu-ray output.

The most problematic codec - Sony AVC - stay away from it completely.

Kimberly, as a fellow Oregonian I urge you to take me along with you to your South Seas destination. There is ice on my sidewalk.

I would probably fit with a bit of room to spare in a jumbo-sized suitcase, probably with enough room for a couple of extra camcorders. I'd be quite a bit over the weight restriction (70lbs I think) but I will gladly pay the extra fee.

@riredale:

Well they do check carefully for stowaways, but if you are a diver, send me a PM and I'll give the details on the boat : )

The diving is spectacular and within the skill range of most divers.

"[I]This is why I'm wondering id DVD-A is just giving a bogus message on Music/Video compilations for BD projects . . .[/I]"

At best the Recompress Settings panel display when Recompress = No is confusing since the bit rate displayed is not the actual bit rate of the file as you observed with other video added to the menu. At worse, it's a DVD Architect program defect.

Here are my observations:

My input to the Music/Video Compilation was Sony AVC Blu-ray compliant elementary streams rendered using a custom template from Vegas Pro 13 at 21.9 mbps.

DVD Architect target bit rate was changed to 22 mbps in properties.

With Recompress = Yes


With Recompress = No


I got the same 9.8 mbps target indicated but would not expect it to make any difference since Recompress = No.

When I look at the 0001.m2ts file from the Blu-ray disk, I observed that the video was not rendered to 9.8 mbps when DVD Architect created the Blu-ray.

General
ID : 0 (0x0)
Complete name : C:\Users\John\Desktop\00001.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 320 MiB
Duration : 1mn 48s
Overall bit rate mode : Variable
Overall bit rate : 24.8 Mbps
Maximum Overall bit rate : 48.0 Mbps

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : 27
Duration : 1mn 48s
Bit rate mode : Variable
Bit rate : 22.3 Mbps
Maximum bit rate : 40.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.449
Stream size : 288 MiB (90%)

Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : PCM
Format settings, Endianness : Big
Format settings, Sign : Signed
Muxing mode : Blu-ray
Codec ID : 128
Duration : 1mn 48s
Bit rate mode : Constant
Bit rate : 1 536 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 19.8 MiB (6%)

"When you say mix codec inside a Blu-ray burn - you mean source it. Of course, you can bring Mpeg2 elementary stream, AVC, and Sony MXF. Problem is that in the authoring the disc creation is going to churn everything to one value or another."

Yes you can bring in video clips that use different codecs. If each is acceptable to DVDA as being suitable for a BD then it will not re-encode them. If it is not acceptable, then that clip will be re-rendered according to your project properties.

Note that HDV is suitable for a BD but fussy DVDA insists on re-rendering anyway.

As I just said, john_dennis, just did an analysis that shows what happens.