How do I get mp3 sound out of my vob for youtube?

[Jeremy Duncan]

When I use dgindex all I get is a d2v that I use for avi video.
But I don't know how to get mp3 from the audio portion dgindex outputs, so that I can use avimuxgui.

When I put the audio potion dgindex outputs into avimuxgui it says it only works with mp3 and some other formats, and I don't know how to get mp3 sound from my vob.

It's for youtube videos.

:thanks:

:stupid:

[unskinnyboy]

Your VOB has MP3 audio? I bet it doesn't. You need to extract the AC3, DTS or LPCM out of your VOB using DGIndex, and then re-encode that to MP3.

What was the format of the audio you were trying to feed Avi-Mux GUI when it complained?

[Blue_MiSfit]

Erm.. this has nothing to do with avisynth usage :) I think it belongs in the audio encoding forum... Maybe a mod would do us all a favor? ;)

Okay - so your audio is either AC3, DTS, or LPCM. AC3 or LPCM are usually easier to work with.

You need to re-encode this to MP3. Probably the easiest way to do this is with MeGUI - or BeSweet if you're old school.

Feed the audio into MeGUI, and use a profile that downmixes to 2ch (assuming your source is 5.1ch as most are), then encodes to MP3. It should be quite simple! :)

The MP3-128ABR should do exactly this! I might suggest bumping up the bitrate a bit, since it's going to get recompressed to 96kbit AGAIN when it hits YouTube. Hell, if you've got a little time to spare on the upload (and some filesize to spare, since YouTube limits this), just encode at 320CBR.

~MiSfit

[Jeremy Duncan]

I tried to use Megui before, but all those options confused me.
I would be very happy if you could please show me how to input ac3 (which is what dgindex outputs), and how to output mp3.
Step by step telling me which buttons to press. :)

I'm sorry I'm so ignorant on how to use Megui.

:script:

:stupid:

[thetoof]

load your vob in dgindex, select the "decode ac3 to wav" for the audio, select all the other options you want (check the audio section in DGIndex's documentation), file-save project (this will create a d2v and convert your audio to wav), drag and drop the .wav file in megui, select the encoder, config, output path +filename, enqueue, start, wait, mux to your video, smile!

[Blue_MiSfit]

noooo there's no need to decode to WAV first, and waste all that space! :)

Just let DGIndex demux its AC3, then do this - it's shockingly easy:
1) Open MeGUI, and push the "..." button next to "Audio Input", and point it at your AC3
2) Click the "..." button next to "Audio Output" and name / place the output file
3) Under the "Audio Profile" - select MP3-128ABR.
4) Click enqueue
5) Go to the "Queue" tab, and click "Start"

Win :)

MeGUI will decode the audio and pipe the output to LAME automagically!

~MiSfit

[thetoof]

True, but imo for normalization, sample rate conversion, downmix and Dynamic Range processing... you can achieve superior results in DGIndex. Or am I completely mistaken?

I know he wants to keep it simple, but it takes only a few minutes to read the DGIndex documentation and understand the elements I mentioned before.

[Blue_MiSfit]

I wasn't aware DGIndex had a comprehensive AC3 decoding library with support for all those operations! I think MeGUI supports all those as well, but I could be mistaken. It definitely does downmix and dynamic range compression, but I'm not sure about sample rate conversion. Not that you really need to worry about that for 128kbps MP3 though..

~MiSfit

[Jeremy Duncan]

Thank you both for your replies.
Good stuff. :)