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View Full Version : Reduce MPEG2/PCM volume for multiple files (for MPEG2 captures/AVIs with mp3 audio)


scottchicken
20th February 2006, 04:49
Hello,

At the moment I am recording music videos via a DVB-T card (DNTV Live! Low Profile (http://digitalnow.com.au/dvbtcards.html)), as MPEG2 Program Streams, standard definition 720x576, using DVB Webscheduler (http://dvb-ws.sourceforge.net/). This works great. Sometimes I convert to XviD if I can see a big filesize save, but I keep all original MPEG2 files.

Previously I used to capture via the analog input on my ATI All-In-Wonder card from my SD Digital Settop Box. Still in MPEG2 using the ATI Multimedia Centre, so the same format as I'm currently doing - HOWEVER as I now know the audio is too high - louder than it should be. So I can't mix these with the new ones because of the audio difference.

As I've got hundreds of these MPEG2s with the too loud audio, is there is any way I can reduce the volume (in bulk, preferably)?

(I do also have XviD versions of these, but I imagine it would be more difficult because I converted to VBR MP3 audio).

Cheers!

scottchicken
24th February 2006, 01:39
Just for future reference for anyone in the future doing a search of old posts:

I ended up using the VirutalDub Batch Assistant (www.brightonart.org/VDubBatchAssistant.shtml), which let me process 450 XviD AVIs with VBR MP3 audio tracks, to reduce the volume (the maximum amount 11%) with no fuss.