ac3 encoding

[tatie]

Hi people, have been looking around for soft encode for the svcd2dvd program.
Am a full registered owner of svcd2dvd but can't find the soft encode software anywhere to download, anyone give suggestions of where to get it and which version i need to work in svcd2dvd.

Thanks,

Edited by ChrissyBoy

try eBay or Google for sales of the product.

[porksausage]

Hi ChrissyBoy,

Now that SVD2DVD no longer supports BeSweet and SoftEncode is no longer available - are there plans to add support for another [cheap] AC-3 encoder in the near future?

Thanks.

Ray

[ChrissyBoy]

such as?

[tatie]

ok well thanks for the help, having used this with soft encode now for ac3 i am getting the svcd2dvd program aborting on me saying

"Processing Aborted"

Don't now if it's any use but heres the screen shot of the log

http://www.uploadit.org/files/180903-aborted.bmp

Thanks for any help.

[ChrissyBoy]

tatie,

Can you email me your log file? Set the option in the config menu.


CB

[ChrissyBoy]

Ok i must admit to overlooking the AC-3 testing . Thanks to madden for the log file.

This is now resolved - please do an autoupdate.


CB

[madden]

Thanks! Chriss

[tatie]

thanks for that, only just been able to post a reply,

[siliconsoul]

how about

AACEnc 2.15 - probably the highest quality AAC encoder

found it on doom9.net

[ChrissyBoy]

AC-3 not AAC

[siliconsoul]

sorry a little sleepy this morning!

[ChrissyBoy]

I have revisited ffmpeg 0.4.8 tonight. The AC-3 "bug" it once had has been fixed. I shall keep you posted.

CB

[ChrissyBoy]

Well initial results are very encouraging:

800MB mpeg, demuxed, resample audio component to a 48KHz WAV file. This is used for the source for both encoders....

SoftEncode: 448Kbs AC-3 2.0 encode: 37 minutes
FFMpeg 0.4.8: 448Kbs AC-3 2.0 encode: 2 minutes 45 seconds!!!!

The AC-3 stream IS DVD compliant:

File size:            202,288,128 bytes
AC-3 File type:       Non-Intel byte order (0x0b)
Total frames:         112,883
Frame size:           1,792 bytes
Sample rate:          48,000 Hz
Data rate:            448 kbps
Audio coding mode:    2/0 (L, R)
Bit stream mode:      Main audio service: Complete main
Dialog normalization: -31 dB
Center mix:           None
Surround mix:         None
Copyright:            Off
Original:             On
Start time:           00:00:0.00 *
End time:             01:00:12.26
Status:               No errors were found

The only difference i could tell is "Dialog normalization: -31 dB" is a bit more than with SoftEncode & so resulted in slightly quieter audio....

These are my initial findings. If there are any AC-3 users who want to do some tests - email me.

[Baldrick]

With what tool are you checking the ac3 info with? softencode?

[ChrissyBoy]

yep

[Baldrick]

I get same info from a besweet ac3 encoded file. Are you sure that the ac3 bug has beeen fixed???

[ChrissyBoy]

Mmm, well in the history a AC-3 related bug was fixed - so I'm not sure. I shall do some more investigations.

[Baldrick]

this "- fix quantization bug in AC3 encoder." ?

[ChrissyBoy]

yes.

[ChrissyBoy]

FYI:

http://www2.svcd2dvd.com/ffmpeg-cvs-2003-10-01

cygwin compiles.

[Baldrick]

vcddude tested ffmpeg 0.4.8
https://www.videohelp.com/forum/viewtopic.php?p=673882#673882 ...doesn't look good...

[ChrissyBoy]

Bad news. After looking at the ffmpeg devel mailing list I see that fix should be present & working.....

http://sourceforge.net/mailarchive/message.php?msg_id=5769934
http://sourceforge.net/mailarchive/message.php?msg_id=5850268

I shall try the latest CVS (several updates since my last compile) and produce a NTSC/AC3 sample DVD (VIDEO_TS). We can then ask vcddude et al to test.

[Baldrick]

Bad news. After looking at the ffmpeg devel mailing list I see that fix should be present & working.....

http://sourceforge.net/mailarchive/message.php?msg_id=5769934
http://sourceforge.net/mailarchive/message.php?msg_id=5850268

I shall try the latest CVS (several updates since my last compile) and produce a NTSC/AC3 sample DVD (VIDEO_TS). We can then ask vcddude et al to test.

Do that. It would be great if it would work...a free ac3 encoder would be very goooooood.

[BJ_M]

of course it would also be illegal .. as dolby has stated ...

the best program for checking ac3 streams is m-probe ...

[ChrissyBoy]

BJ_M: you posted a link to m-probe elsewhere (http://www.ktechtelecom.com/MProbe200.htm) but it is no longer availiable.....

So ffmpeg & besweet are illegal?

[BJ_M]

what it does http://www.acterna.ru/library/appnotes/mpeg/mpeg_dolby_elementary_stream_analysis.shtml

where to get it it (and more info) http://www.ktechtelecom.com/MProbe2002.htm


but looks like its no longer sold -- though its used by just about every major compressionist .. nothing else comes close .. wonder if anyone now owns the rights to it ... hmmmm .. it was very expensive ..

[BJ_M]

So ffmpeg & besweet are illegal?

so thinks dolby anyway ... i'm not a lawyer .. but i was told this by dolby and they are non to happy about it (they don't get the lic fee's) -- which are I think about 75$ of the cost of a 5:1 software encoder (i may be off) ..

[ChrissyBoy]

MProbe looks good. As does DProbe by the same people.

I have provided a DVD sampler for all to test who are interested. People who have the following DVD players in particular:

Pioneer DV-525
Pioneer DV-343
Pioneer DV-37
Pioneer DV-525
Pioneer DVL-909

It is the train vob trailer from http://www.cinenow.com. demuxed, AC3->WAV using HeadAC3he. WAV->AC3 using ffmpeg (ffmpeg-cvs-2003-10-08). DVD authored using Meastro:

Video:
    Stream:
        Type: Interlaced MPEG2
        Bitrate: 9.800 Mbps
        Framerate: 29.970 Hz
        Resolution: 720x480
        Aspect ratio: 4x3
Audio:
   Stream:
        Type: Dolby Digital (AC3)
        Bitrate: 448 Kbps
        Number of main channels: 2
        LFE Channel: None
        Sampling Frequency: 48khz
        Bits Per Sample: 16

it is here.

Lets see what the Pioneers make of it.

[Baldrick]

didn't work that well... https://www.videohelp.com/forum/viewtopic.php?p=674906#674906