MP3 Volume

[goldensun87]

Ok, so I used the program SUPER to encode a .VOB to .avi . The problem is, when I chose DivX as the codec, the resultant mp3's volume was lower than before. But when I chose the XviD codec, the resultant volume was higher than before. Can someone please explain why this happens?

[Inspector.Gadget]

I used the program SUPER

This is your problem. SUPER is malware dressed up as an encoder GUI. Use a known good workflow: VOBs -> DGIndex -> Avisynth -> encoder. I suggest using MeGUI if you want an additional GUI wrapper for all of the previous.

[goldensun87]

This is your problem. SUPER is malware dressed up as an encoder GUI. Use a known good workflow: VOBs -> DGIndex -> Avisynth -> encoder. I suggest using MeGUI if you want an additional GUI wrapper for all of the previous.

Malware, huh? I've had the program installed on both my desktop and laptop for over a year. I don't remember seeing SUPER getting flagged the last time I ran my antivirus program, and that was several months ago. I guess I'll have to check more closely the next time I scan my system...god knows when that will be lol.

Anyway, I always use Auto GK to convert VOBs b/c it's easier, but I wanted to experiment with SUPER a few times. I DO know that when I convert mpeg-2 and ac3 with auto gk, the resultant mp3 volume is considerably higher than the input ac3. I still don't understand how that works, can you are someone else explain that to me please?

[Inspector.Gadget]

AutoGK normalizes audio after downmixing, as does any sensible GUI.

[goldensun87]

Ah yes, I have always seen that step when I'm watching the Auto GK log. So, does that mean SUPER is not normalizing the audio? If that is the case, does that mean it is possible to decode and encode without normalizing? What exactly does the normalization do?

[setarip_old]

What exactly does the normalization do?In layman's terms, it reduces the volume peaks and valleys, so that you don't get blasted out of your seat by the onscreen explosion and you don't have to say, "What did he say?" when an onscreen character whispers...

[nurbs]

No, that's DRC. Normalization either lowers or raises the volume of the whole track so that the highest peak has a requested level.