Copy DVD compressing Audio

[Barabba]

Hi guys,
big issue for me: I've some cultural DVD to copy which are made in PCM (that takes about 1/3 DVD space!), I would to reauthor the DVD and mix the titles as I like and I'm going to compress them, but with DVD shrink I could compress just video and have to leave the PCM audio track. What a waste!
How can compress it to DD2.0 192kbps (or eventually mono!).

Thanks for answers.

[jdobbs]

That's something that may be available in future versions. But right now DVD-RB doesn''t allow any modification to audio tracks beyond simple swapping or removal.

[Boulder]

It requires some other tools..PGCDemux + an audio encoder + MuxMan + VobBlanker might do the job, then feed the result to DVD-RB. I would assume that the procedure is pretty much the same as when you replace subtitles on a DVD.

[Barabba]

It requires some other tools..PGCDemux + an audio encoder + MuxMan + VobBlanker might do the job, then feed the result to DVD-RB. I would assume that the procedure is pretty much the same as when you replace subtitles on a DVD.

This is a "manual way" but it seams good! Thanks

Could you please add some workflow notes for each program? Just few rows to explain better the process. Thanks a lot

[Boulder]

See posts by r0lZ in this thread: http://forum.doom9.org/showthread.php?t=124949. Just do the thing for audio track instead of a subtitle track. I haven't done it myself but I see no reason why it wouldn't work.

[ercofra]

Also check this: http://forum.doom9.org/showthread.php?t=84887 ; I've used this guide with successful results. ;)

[blutach]

Using BeSweet to re-encode will enable you to eliminate all the demux/remux. It works on VOBs.

Regards

[Sir Didymus]

Hi blutach! :)

This time I have to disagree with your suggestion...

It seems to me the reauthoring stage is necessary, for the manual process, since the replacement of the audio stream changes heavily all of the sector addresses in the VOB files. The related ifo files should all be changed/updated in order to keep a consistent DVD structure to feed to DVD-RB. I am not sure about, but I don't think besweet changes anything in the ifos (afaik it works just on the vob files)...

So, I would stay with the nice suggestions given previously:

1. To use the fundamental guide by Malcolm (as pointed out by ercofra), or - equivalently...

2. To use the more synthetic description given by r0lZ (as suggested by Boulder)...

Of course I second the kind request, for future releases of DVD-RB, to implement this feature as a built-in capability of DVD-RB...

Cheers,
SD

[blutach]

You may be right SD - it's been a while since I've done much audio transcoding.

Regards

[shankly769]

so if i have a movie which is not in ac3 ,it can be converted with ac3 sound,how can it be done ?

[jdobbs]

You have to demux the audio (e.g. PCM or DTS) and/or video, reecode to AC3, and then remux (usually with an authoring package).

[shankly769]

can you explain more please?
thanks

[CWR03]

You may not wish to explain more after reading this post:
http://forum.doom9.org/showthread.php?p=1039389#post1039389
as the explanation will be meant for downloaded movies.

[shankly769]

You may not wish to explain more after reading this post:
http://forum.doom9.org/showthread.php?p=1039389#post1039389
as the explanation will be meant for downloaded movies.

yes i know,i had mistaken words,but i wrote in here becouse tread is about audio compression,its not for downloaded dvds ,but for general purpose.do you have any explanation for what i need?

[CWR03]

so if i have a movie which is not in ac3 ,it can be converted with ac3 sound,how can it be done ?
Extract the original AC3 audio from your original DVD.

[shankly769]

Extract the original AC3 audio from your original DVD.

thanks for your reply,well,i have this in my dvd

audio codec-0x0055 MPEG-1 Layer 3
info-44100Hz 128 kb/s tot , Joint Stereo

so audio is not ac3,can i convert the video audio into ac3? thats my question,i hope now you understand my needs,and many thanks

:thanks:

[Sir Didymus]

Hei shankly, :mad:

It seems your attitute, which is apparently quite friendly, have the single objective to collect some information to help you going on breaking the rules of this forum.

I kindly ask you to stop for a while spending your time in silly posts, and to use the same time for two pourposes:
1) to read better both the threads linked above, where - for the benefit of users different than you - all of the information relevant to the topic are present, and MOST IMPORTANT
2) to read and to observe the rules of this forum.

Ha, forgot to mention - MPEG 1/2 Layer 3, aka MP3, can not be present on an any original DVD-VIDEO, since it is not allowed in the specs; the same is for the sampling rate of 44.100 Hz, which is not allowed for the DVD-VIDEO audio streams...

[shankly769]

Hei shankly, :mad:

It seems your attitute, which is apparently quite friendly, have the single objective to collect some information to help you going on breaking the rules of this forum.

I kindly ask you to stop for a while spending your time in silly posts, and to use the same time for two pourposes:
1) to read better both the threads linked above, where - for the benefit of users different than you - all of the information relevant to the topic are present, and MOST IMPORTANT
2) to read and to observe the rules of this forum.

Ha, forgot to mention - MPEG 1/2 Layer 3, aka MP3, can not be present on an any original DVD-VIDEO, since it is not allowed in the specs; the same is for the sampling rate of 44.100 Hz, which is not allowed for the DVD-VIDEO audio streams...

thanks for yor reply,but i dont think i'm posting silly things,i'm not a profesional,i'm a home user and this is my hobbie to learn a bit and experiment my needs,i've been badly taken by you,and i'm verry emberrased by that,do i have the rghit to learn?i'm sorry about such words but i mean nothing at all and what i wrote(audio codec-0x0055 MPEG-1 Layer 3
info-44100Hz 128 kb/s tot , Joint Stereo)
is what a certain sw gave me,its not o,but i need to learn,thats all

;)

[jdobbs]

@shankly769

The point SD is making is that based upon your postings, it doesn't appear you are attempting to backup a DVD that you own -- but are working from what might be a downloaded file or image. The fact that it includes MPEG-1 Layer 3 (MP3) audio is one of the indicators of that possibility (as is the 44.1Khz sampling). No original DVD would be manufactured with MP3/44.1Khz audio, as it would violate the DVD standard.

The Doom9 Forum is very well known in the video community for sharing information about DVD formats and backup techniques -- it has a lot of users reading it, including those who would love to shut it down. Talking about working with illegally downloaded images or possible infringement of copyright is strictly prohibited on this site.

[Barabba]

Thank you all for infos, really appreciated.

I'll try to follow the process then let you know if I success.

Regard shankly769 post I could say it's a bit useless to convert an mp3 stream into an ac3 because the size result is similar. If you have to do it to make DVD compatible with players (actually I can't believe that you have a dvd with mp3 stream, it's not compatible) try to decode mp3 to wav and than re encode it as ac3 with ac3 tools.