<br><font size=2 face="sans-serif">I dont want to transcode as I have a
good stream. Where does it store the cuts? I could use the info to cut
the commercials out from the command line. I guess the other option is
to transcode with no loss in quality. Is that possible?</font>
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<td width=40%><font size=1 face="sans-serif"><b>Douglas Phillipson <dougp@intermind.net></b>
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<br><font size=1 face="sans-serif">Sent by: mythtv-users-bounces@mythtv.org</font>
<p><font size=1 face="sans-serif">11/28/2003 11:20 PM</font>
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<div align=center><font size=1 face="sans-serif">Please respond to<br>
Discussion about mythtv <mythtv-users@mythtv.org></font></div></table>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td valign=top><font size=1 face="sans-serif">Discussion about mythtv <mythtv-users@mythtv.org></font>
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<div align=right><font size=1 face="sans-serif">cc</font></div>
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<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td valign=top><font size=1 face="sans-serif">Re: [mythtv-users] Commerical
skips</font></table>
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<br><font size=2><tt>DBakker@arrayasolutions.com wrote:<br>
> <br>
> How does the commercial skipping work? Is it automatic? Do I have
to set <br>
> it up somewhere? Will it remove the commercial from my PVR-250 DVD
mpgs <br>
> when they are recorded?<br>
> <br>
> <br>
> ------------------------------------------------------------------------<br>
The HowTo isn't real clear on this:<br>
--------------------------------------------------------------------------<br>
<br>
21.13 What is this transcoder thing, and how do I use it?<br>
<br>
The transcoder re-encodes files from one MythTV format to another. The
<br>
main purpose of the transcoder is to allow users with hardware encoders
<br>
(PVR-250) or systems that can only record in RTJpeg due to performance
<br>
reasons (multiple capture cards, slow system, etc) to create MPEG44 <br>
streams to save space.<br>
<br>
The transcoder can be used in two ways:<br>
<br>
* Automatically re-encode every file once it has completed
recording<br>
* After marking commercials, the transcoder can be run manually
to <br>
delete the commercials from the file (thus further saving space)<br>
<br>
-------------------------------------------------------------------------<br>
In the "Commercial Detection" section of the GUI setup screen,
there is <br>
a "Automatically skip commercials" checkbox but I don't know
if it does <br>
it while recording or transcoding. I would like to know if commercials
<br>
are tagged during record, then removed with transcoding. Or
tagged and <br>
removed during transcoding. The text below doesn't seem to match
the <br>
MythTV software as I'v never found a way to "Mark" commercials
through <br>
the menu.<br>
-------------------------------------------------------------------------<br>
<br>
The two methods are independent. The first is an automatic process that
<br>
can be enabled/disabled through the setup program; the second is a <br>
manual method which must be invoked on each recording individually.<br>
<br>
The second method can be used on files that have already been transcoded
<br>
(or files which were are already in the correct format), so only the <br>
frames immediately following a cut section will be re-encoded, resulting
<br>
in a very minimal loss of quality.<br>
<br>
To enable automatic transcoding, do the following: start the setup <br>
program under the host-specific settings: set the Transcoder Auto-run <br>
checkbox<br>
<br>
For either manual or automatic transcoding: start mythbackend start <br>
mythfrontend select setup, and the Transcoding recording profile. now <br>
select either RTJPEG or MPEG-4 (selecting any of the hardware encoders
<br>
will result in the transcoder not working). set the other parameters as
<br>
you'd like. For best performance, you should match the audio to the <br>
'Default' profile. If you plan to only use the manual transcoder, you <br>
can choose to set the video to be the same as the default profile too <br>
(as long as it is MPEG-4 or RTJpeg)<br>
<br>
Everything should now be setup properly. If you elected to use the <br>
Auto-Run feature, the transcoder will automatically launch after each <br>
recording is complete. The transcoder thread runs at a low priority, so
<br>
it should not impact any critical tasks or other recordings.<br>
<br>
If you want to manually transcode a program, simply press 'X' while <br>
watching a recording (you should have already finished marking all <br>
commercials). If you change your mind, hitting 'X' again will stop the
<br>
transcoding.<br>
<br>
Once the transcode is complete, mythbackend will replace the old file <br>
with the new as soon as it is no longer in use.<br>
<br>
<br>
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</tt></font>
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