DVD audio MPEG-1 will not work

[luckyme]

I copied a home video miniDV to, via firewire, my new Liteon DVD recorder. I have no sound on my stand alone player, unless I change output set on the player to PCM. Here's the AVIcodec info: V. codec name: MPEG 2 (SVCD/DVD)
A 1 codec name: Mpeg-1 audio layer [0xc0]
File : 44 MB (0.0 B), duration: 0:00:00, type: MPG, 1 audio stream(s), quality: 98 %
Video : 0.0 B, 9450 Kbps, 29.970 fps, 720*480 (16:9), MPG2 = MPEG 2 (SVCD/DVD), Supported
Audio : 0.0 B, 256 Kbps, 48000 Hz, 2 channels, 0x51 = Mpeg-1 audio Layer 2 [0xc0], Supported
Is the audio not compliant for DVD, if not how can I change it

[bugster]

I copied a home video miniDV to, via firewire, my new Liteon DVD recorder. I have no sound on my stand alone player, unless I change output set on the player to PCM.


Is the audio not compliant for DVD, if not how can I change it

Let me guess, your DVD player is connected to an external decoder/amplifier for audio, yes? You DVD player is normall set to 'bitstream'?

Your home made DVD has mpeg layer 2 audio. This is compliant for DVD in Europe, support for it is not requered in the US (in fact I think the european requirement has recently been dropped too).

Anyway, you DVD player obviously include an mp2 decoder, or you wouldn't get any sound in any setting. Your external amp does not. When you set 'PCM' on your DVD player, it decodes the various digital audio formats (mp2, Ac3 and maybe DTS) to stereo LPCM. This is uncompressed audio that your external amp can convert to analog easily. With the 'bitstream' setting, the DVD player simply sends the audio data undecoded, exactly as it reads it from the disk. Then it is up to the extrnal amp to decompress the Ac3 or DTS or mp2.

Solutions?

Create your home made DVD's with LPCM audio (takes up loads of room on the disk) or with Ac3 (which is compressed like mp2) or get used to changing the settings when you play a disc.

See the guides for more info on authoring DVD's with the different audio formats.

[luckyme]

BeSweet v1.5b25 by DSPguru.
--------------------------
Using hip.dll v1.19 by Myers Carpenter <myers@users.sf.net>
Error 85: support for ac3enc.dll had been removed due it its suckness!
Quiting...
[00:00:00:000] Conversion Completed !

Logging ends : 01/26/04 , 10:08:16.

This is the log in BeSweetGUI. Extreme newbie at this but reading learning all the imput helps

[bugster]

That measn the current version of Besweet will not encode Ac3 audio. The capability has been removed due to the fact the output was not fully compliant with AC3 specs.

Either find an older version of BeSweet (and hope it works with your player, only a few seemed to cause problems) or buy a commercial encoder.

[indolikaa]

Commercial AC3 encoding. Is there any software for the common folk that will produce a Dolby-legal AC3 stream that doesn't cost an arm and a leg?

[bugster]

Commercial AC3 encoding. Is there any software for the common folk that will produce a Dolby-legal AC3 stream that doesn't cost an arm and a leg?

I hear there is now an Ac3 plugin for TmpGenc DVDA which is not cost-prohibitive.

2-channel only I believe but what more do you need for your home movies?

[Gazorgan]

I have seen posts that have issues with Audio at 256k . Try 192k instead. It's a small thing but some players don't like that bitrate.

ffmpeg does AC3 audio doesn't it?

[bugster]

ffmpeg does AC3 audio doesn't it?

I believe so, but I also think it uses the same encoder .dll as BeSweet and has the same compatibility/compliance problem. Could be wrong though.

[disturbed1]

Is the audio not compliant for DVD, if not how can I change it

NO, it is not compliant. MPEG audio is not an NTSC standard for DVD audio. You have to use either AC3, or LPCM as stated above.

For ac3 you can also use Vegas Video, Sonic's my DVD Deluxe ($70) includes a 2/0 ac3 encoder. Ulead also has a couple of products that include ac3 encoding, Nero has an encode/decode ac3 plugin ($25).

[indolikaa]

NO, it is not compliant. MPEG audio is not an NTSC standard for DVD audio.

100% Correct!

...although I have never found a player that fails an MP2-encoded DVD...