Arch Linux

iBertus

Member

From: Greenville, NC

Registered: 2004-11-04

Posts: 2,228

transcoding MythTV nuv files to something smaller

I'm looking to transcode all of my .nuv files recorded by MythTV (BT878 based tuner) into something smaller. As these recordings are from an analog source it isn't important if some quality is lost. I'm looking to get these files MUCH smaller if possible. I tried using mencoder with a command-line found on some website but the result was just a blank green screen. Any help appreciated.

auditek747

Member

Registered: 2006-06-05

Posts: 17

Website

Re: transcoding MythTV nuv files to something smaller

Hello,

I have no experience with this app... I just saw that it was there
http://www.archlinux.org/packages/search/?q=nuv

or...

I don't have any .nuv's to try, but with mencoder, I would do:

mencoder vid.nuv -oac lavc -lavcopts acodec=mp3:abitrate=128 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=2800 -o vid.avi

Good Luck.

Last edited by auditek747 (2007-04-26 19:26:55)

sash

Member

Registered: 2005-10-16

Posts: 155

Re: transcoding MythTV nuv files to something smaller

I use the nuvexport perl script to convert to to something else. I, too, have analog capture cards.

Last edited by sash (2007-04-27 01:39:14)

clarence

Member

From: fremantle.au

Registered: 2005-10-12

Posts: 294

Re: transcoding MythTV nuv files to something smaller

avidemux2 perhaps.

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fck art, lets dance.

iBertus

Member

From: Greenville, NC

Registered: 2004-11-04

Posts: 2,228

Re: transcoding MythTV nuv files to something smaller

Okay, I can get the transcode to work and I can even encode the raw stream by using tv:// as source in mencoder command-line. But, I cannot get any sound in my recordings. I didn't originally check but it seems that not even the ones in .nuv format have sound. I must have missed a step in the setup procedure.

auditek747

Member

Registered: 2006-06-05

Posts: 17

Website

Re: transcoding MythTV nuv files to something smaller

Okay, I can get the transcode to work and I can even encode the raw stream by using tv:// as source in mencoder command-line. But, I cannot get any sound in my recordings. I didn't originally check but it seems that not even the ones in .nuv format have sound. I must have missed a step in the setup procedure.

This is normally just a mixer problem. Something needs to be set as a recording
device in the mixer. (line, capture, aux...)
Unfortunately, everybody's setup is a little different. You'll have to use trial and
error. Use your mixer (alsamixer, kmix, or whatever) to set an input to record,
do an Mencoder capture, test, and repeat until your vid has audio.

Of course, if you have a cheapo version of the bt878 card like me, check the jumper!

Good Luck.