Normalizing Audio on multiple video clips

[dj_jeff]

this may be a crazy question, but does anyone know of a program that normalizes audio on batches of videos? i know for mp3's there are programs like MP3Gain which will fly through a bunch of songs and normalize them....is there anything that does this to a video file? here's what i am looking to do, i have a bunch of video clips that are in many different formats....i want to convert them all to DIVX, but the sound volume is way different for some clips. if you can help, PLEASE let me know

thanks,
jeff

[celtic_druid]

So you are batch converting to DivX? If so how? Because maybe it is possible to do the audio at the same time?

If you say wanted to take a bunch of avi files, direct stream the video, normalise the audio whilst converting to mp3 you could use something like:
for %%f in (*.avi) DO (mencoder.exe -ovc copy -oac mp3lame -af volnorm "%%f" -o "%%~nf.norm.avi")

Could also probably batch demux mp3's, run mp3gain and remux.

[anubis13]

Sonic foundry used to have a Batch Converter
program. I think its still out there for free now that sony owns them. It will do what you want

[Soopafresh]

Different batch methods for different file types. Let us know what most of the file types are, it'll make it easier.


There are apps to normalize MP2 and MP3 files from the command line, so technically it's doable - the question is do you have enough files to make this worth the effort ?

[dj_jeff]

here's exactly what it is...i have 33 episodes of a tv show that are mainly xvid, mpeg1, mpeg2, and some divx. i want to convert them ALL to divx and put them on a data dvd, so i can pop it in my phillips dvd player (which plays divx) and play the 33 episodes in a row. i just want the audio to be normalized to aviod one show ending and the next one blowing my ears out. thanks for the help guys!!

jeff

[racer-x]

You could demux all videos to elemental streams. Then use the Batch Process in GoldWave to Normalize and save as wav.

[Soopafresh]

AVI2WAV command line for the XVID and Divx files

DVD2AVI command line for the MPEGs

Normalize with Mp3Gain and WAVgain


This will all be easier if your file names are 11 characters or less (with extension)

[celtic_druid]

AVI2WAV would decode to wav though, if the audio is mp3 then you could batch demux with ffmpeg.

Something like:
for %%f in (*.avi) DO (ffmpeg.exe -acodec copy -vn -i "%%f" "%%~nf.mp3")

Then you could run mp3gain, which if I understand correctly will work for both the mp2 and mp3's.

[dj_jeff]

I GOT IT !!!!
i was looking around through the filters in TMPENC Express and there are audio filters for batch converting videos!! that settles it, this is the best program in the world and very easy to use!! thanks for all of your help guys. i never realized it was a feature on tmpenc express. i am psyched!

jeff

[itou_br]

Did you test this normalization feature of Tmpgenc Xpress? How did it work?
I have more than 300 mpeg2 video clip files, and many of them are with different volumes. I need to find a way to put all on the same level.

How do you think I can figure this out without having to do one by one?

Airton
brazil