Audio Track on DVD

Beavis99 · 21-04-2002, 15:05

Hi all,

Just a curious question:

Is the audio track on DVD films compressed using MPEG2 or left uncompressed PCM, like CD Audio? If so, what bitrate?

Cheers,
Beavis

Jarrak · 22-04-2002, 23:50

Audio tracks on DVD's (DD5.1, DD2.0, DTS etc) are encoded just like the video material.

Beavis99 · 23-04-2002, 09:10

Cheers,

Flatmate was saying that its not encoded and therefore the same quality as CD, but I was saying that it IS encoded and so quality would be lost as a result of compression (unless its lossless, which I highly doubt!)

Cheers,

Beavis

MicroSmurf · 23-04-2002, 09:22

Most DVD's have only a DD or DTS soundtrack both of which are compressed with DTS being the least compressed, but there are still quite few of the 'budget' DVD's like the £4.99 ones you get from play.com which do not have a DD soundtrack and use plain old fashioned PCM stereo and AFAIK the sample rate is still 44.1 so it looks like you and your flatmate are both right and wrong.

Jarrak · 23-04-2002, 10:50

Don't forget SACD or DVD-A which are both superior in terms of audio quality compared to the standard CD format and have the option of multichannel soundtracks as well as pure stereo.

Beavis99 · 23-04-2002, 22:15

So DVD-A will be uncompressed for all audio channels?

Beavis

Jarrak · 24-04-2002, 00:48

No DVD-A is a compressed format.

DVD-A Specs

21-04-2002, 15:05	#1
Beavis99 Forum Member Join Date: Nov 2001 Location: Bromley, Kent, UK Posts: 843	Audio Track on DVD Hi all, Just a curious question: Is the audio track on DVD films compressed using MPEG2 or left uncompressed PCM, like CD Audio? If so, what bitrate? Cheers, Beavis

22-04-2002, 23:50	#2
Jarrak Forum Member Join Date: Jan 2002 Location: Ilkeston Posts: 18,075	Audio tracks on DVD's (DD5.1, DD2.0, DTS etc) are encoded just like the video material.

23-04-2002, 09:10	#3
Beavis99 Forum Member Join Date: Nov 2001 Location: Bromley, Kent, UK Posts: 843	Cheers, Flatmate was saying that its not encoded and therefore the same quality as CD, but I was saying that it IS encoded and so quality would be lost as a result of compression (unless its lossless, which I highly doubt!) Cheers, Beavis

23-04-2002, 09:22	#4
MicroSmurf Forum Member Join Date: Dec 2001 Location: Peterborough Posts: 1,177	Most DVD's have only a DD or DTS soundtrack both of which are compressed with DTS being the least compressed, but there are still quite few of the 'budget' DVD's like the £4.99 ones you get from play.com which do not have a DD soundtrack and use plain old fashioned PCM stereo and AFAIK the sample rate is still 44.1 so it looks like you and your flatmate are both right and wrong.

23-04-2002, 10:50	#5
Jarrak Forum Member Join Date: Jan 2002 Location: Ilkeston Posts: 18,075	Don't forget SACD or DVD-A which are both superior in terms of audio quality compared to the standard CD format and have the option of multichannel soundtracks as well as pure stereo.

23-04-2002, 22:15	#6
Beavis99 Forum Member Join Date: Nov 2001 Location: Bromley, Kent, UK Posts: 843	So DVD-A will be uncompressed for all audio channels? Beavis

24-04-2002, 00:48	#7
Jarrak Forum Member Join Date: Jan 2002 Location: Ilkeston Posts: 18,075	No DVD-A is a compressed format. DVD-A Specs

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Audio Track on DVD