Encoding AC3 audio in Linux for DVD authoring - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
Thread Tools
post #1 of 1 Old 08-15-2005, 04:51 PM - Thread Starter
BenFranske's Avatar
Join Date: Jan 2005
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Here's the situation: I'm using a MythTV system with a Hauppage PVR-350 capture device which creates MPEG-2 files with MP2 audio. I would like to format these files for DVD playback and as such need to transcode the MP2 audio to AC3. Originally I was moving the files to a Windows system and using BeLight (BeSweet) to do this which works fine but I'd like to keep it all on the linux side. I was able to make this work with the mpegdemux, ffmpeg and mplex tools but the volume of the resulting AC3 audio is too low. In BeLight I am able to apply OTA "HybridGain" and Azid "Dynamic Compression" to fix this problem but have been unable to find a way to do this in Linux. Is anyone aware of a solution for boosting AC3 gain in Linux?

The Linux commands I'm using now are:
ffmpeg -i orig.mpg -ab 256 -ar 48000 -ac 2 -acodec ac3 -y ffmpeg.ac3
mpegdemux -d -s 0xe0 orig.mpg video.m2v
mplex -f 8 -o final_ac3.mpg video.m2v ffmpeg.ac3

Where orig.mpg is the original file with MP2 audio and final_ac3.mpg is the finished video file with AC3 audio.

Thanks for any help!
BenFranske is offline  
Sponsored Links
Closed Thread Digital Recorders (PVRs) General

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off