Is there a tool for volume normalization in MPEG video files?

[Lixorer]

Do you know about such software?

[olyteddy]

My DVD authoring software, uLead DVD Movie Factory, can normalize audio as it renders. Is that what you mean?

[Lixorer]

No, I mean a tool that could automatically
separate the audio part of a file,
adjust volume to a predefined level,
join the result with the video part of a file (without reencoding video!).

[anonymez]

The audio will need to be re-encoded to be normalized in most cases. Not aware of a tool that can do it automatically, but use ProjectX to demux, BeLight or foobar2k to re-encode/normalize then ImagoMPEG Muxer to mux to MPEG PS.

[drfsupercenter]

Or TMPGEnc to demux/remux, then BeSweet to convert mp2 to wav, then back. That's what I do.

[anonymez]

My bad. Just remembered Avidemux can do it in a single step. Set video to copy mode, set audio to AC3/MP2/whatever, set gain via filters and output to MPEG PS.

[Lixorer]

Tnanks, but Avidemux isn't exactly what I asked about. E.g. it can make all samples sound 3 db lower and I would like it to make the highest sample sound 3db and all the rest of samples change proportionally.

[anonymez]

Then you'll want something that supports ReplayGain, like foobar2k. Demux the audio with Avidemux, add it to the playlist and scan it. Re-encode and make sure to enable ReplyGain processing. Mux with Avidemux.

For AC3 input/output in foobar, get the foo_ac3 plugin and a cli AC3 encoder such as Aften, respectively.