[mythtv-users] Lossless transcoding with commercial cutting increasing the size of the file.

[Mache Creeger]

In a typical hour show, you have 20 minutes of commercials and 40 
minutes of show.  So in 30 minutes you should have in or around 10 
minutes of commercials.  The automatic commercial flagging does about 
an 85% job but it misses some stuff.  You really need to go over it manually.

So, I am assuming that you are not going over it manually and are 
relying on automatic flagging.  If true you should read up on 
this.  In summary, you go into edit mode with the "E" command while 
watching the recording, "Z" to load the cut list, and other various 
keys to set and reset the cut points.  Once you have the cuts the way 
you want them, you get out of edit and go to play by pressing "E" 
again and then kick off the transcode by pressing "X".   For an hour 
show the transcode should complete in about 5-10 minutes.  You should 
not have to have nuv lying around and should be able to stay 
completely in mpeg.

-- Mache Creeger

At 06:09 AM 5/26/2006, you wrote:
>I have been having a problem with lossless transcoding not working 
>correctly in the
>past but I believe I finally got it setup correctly. In the settings 
>for the High
>Quality transcoder I have the "Lossless encoding" button checked. 
>This does remove
>the commercials and reduce the size of the file only if the show has many
>commercials. If the show does not have so many commercials the size 
>of the file
>becomes actually bigger than the original however the commercials 
>are definitly
>removed. I am using a hauppage 500 and 250 with ivtv as my capture 
>devices. Both
>devices record at about 2.2GB / hour. Here is a part of the 
>directory listing that
>shows a small expansion after a commercial cut: -rw-r--r--  1 root   root
>1246389609 May 26 08:50 2014_20050902150000_20050902153000.nuv
>-rw-rw-rw-  1 apache www-data 1167941568 Sep  2  2005
>2014_20050902150000_20050902153000.nuv.old
>-rw-r--r--  1 root   root          43825 May 26 02:36
>2014_20050902150000_20050902153000.nuv.png
>
>I have the keep the originals after transcoding option on so the 
>.old file is the
>original. This was a 30 minute show that was ~22 minutes after cutting.
>
>Thanks in advance,
>John
>
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