Increasing audio volume

[trueman]

hello,

I have a dvd that has been converted to vobs from avi but the audio isnt very loud. Is there a way I can make the audio louder even though I dont have the original avi file anymore? Do I have to convert back to avi first?

Thanks

[mats.hogberg]

No, just extract audio from VOBs, edit audio, reauthor with old video, new audio.

/Mats

[trueman]

No, just extract audio from VOBs, edit audio, reauthor with old video, new audio.

/Mats

Okay great.....How do I do that?

Just a clue will do, I love a challenge?

[mats.hogberg]

Run the VOBs thru VOB2MPG
Demux audio and video with for instance TMPGEnc
Edit audio in audio editor, save as wav
Encode to AC3 with ffmpeggui
Author old video (m2v) + new audio as DVD
Done.

/Mats

[trueman]

Thanks for that.

[yoda313]

Audacity tends to be a favorite here. Plus its a free audio editor

[trueman]

Couple of questons?

When I setup tmpgenc what audio setting do I use CBR-linear or mpeg 1 or vbr-linear or mpeg 1? I assume I just let tmpgenc create two seperate files m2v and wav???

Also what audio editor do you suggest and what exactly am I doing in the audio editor?

Thanks once again

[mats.hogberg]

When I setup tmpgenc what audio setting do I use

None. You just go to the mpeg tools and go simple demultiplex. You get the audio/video in whatever format they are in the mpg.

what exactly am I doing in the audio editor?

Make the audio louder. Wasn't that the whole point of this?

/Mats

[trueman]

Okay I had never seen that option in tmpgenc before because I had always just started with the wizard.

As for the audio do I load it into audacity and then click the "Make audio louder button" or something? Im just not quite sure of the steps involved.

One more question, when I ran the movie through vob2mpg it created two files. I ahve been working on these two files. Is this okay or should I join them somehow to create one file?

Thanks again for the help.

[yoda313]

Ok open audacity. Click file-open. Choose the directory you saved the audio file in and open it. Then follow these steps:







After its been increased then save it as a new file. You'll have to experiment to see how much you need to increase the volume.

[trueman]

I try to open the ac3 file in audacity but after the progress meter reaches 100% Audacity shuts down. ANy ideas why this could be happening?

[trueman]

When I try to open the audio from the second file it just gets half way and then nothign else happens. hats going on with this?

[yoda313]

I don't think audacity accepts ac3. You have to convert it to wav. If its a 5.1 ac3 you can have besweet convert it to 6 mono wavs.

[mattso]

Try PX3 AC3 to WAV.

[trueman]

Ive set besweet up to convert the ac3 file to wav but there doesnt seem to be a GO button anywhere. How do I get besweet to start conversion?

[trueman]

Try PX3 AC3 to WAV.

Okay will do thanks.

[trueman]

One question do I have to covnert the audio back to ac3?

I used PX3 AC3 to WAV and set it to increase the volume when it created the wav file. I was going to just use tmpgenc express and put the new wav file in as the audio. Will this do or should I convert the audio back to ac3?

[trueman]

This is not going so good. I used px3 to convert the ac3 to wav and increased the decibels to make the audio louder. I then tried to convert these wav files back to ac3 with ffmpeggui but when I try to select the source files the two wav files arent listed. They dont even have a wav file extension even though they play okay in wmp. Its as if there not audio files.

Also Im not sure if I should use tmpgenc express or tmpgenc dvd author?

[mattso]

Hey Trueman, when you use PX3 AC3 to WAV remember to add the ".wav" extension with your output file name. Sorry, I should have warned you. For instance: "yourwav.wav" not just "yourwav".

Then, just load it into ffmpeggui & set a bitrate (192-256, I tend to use 224).

You can use TDA for authoring, yes.

Good luck!