[mythtv-users] Questions about recordings, settings, transcoding, and filesizes

[Brandon Ewing]

Whenever I record a half-hour program using the default settings, it comes
out to around 1.1GB on-disk.  If I go through, and set the cutpoints in the
commercials, and transcode it, the same program balloons to 8 times its
normal size.  
 
The video was originally capped using a Hauppuage PVR-250 on default
settings. 
 
Here are my current codecparams:
 
mysql> select * from codecparams;
+---------+--------------------------+-----------+
| profile | name                     | value     |
+---------+--------------------------+-----------+
|      22 | autotranscode            | 0         |
|      22 | width                    | 480       |
|      22 | height                   | 480       |
|      22 | rtjpegquality            | 170       |
|      22 | rtjpeglumafilter         | 0         |
|      22 | rtjpegchromafilter       | 0         |
|      22 | mpeg4bitrate             | 2200      |
|      22 | mpeg4maxquality          | 2         |
|      22 | mpeg4minquality          | 15        |
|      22 | mpeg4qualdiff            | 3         |
|      22 | mpeg4scalebitrate        | 1         |
|      22 | mpeg4optionvhq           | 0         |
|      22 | mpeg4option4mv           | 0         |
|      22 | hardwaremjpegquality     | 100       |
|      22 | hardwaremjpeghdecimation | 4         |
|      22 | hardwaremjpegvdecimation | 4         |
|      22 | mpeg2streamtype          | MPEG-2 PS |
|      22 | mpeg2aspectratio         | 4:3       |
|      22 | mpeg2bitrate             | 4500      |
|      22 | mpeg2maxbitrate          | 6000      |
|      22 | samplerate               | 32000     |
|      22 | mp3quality               | 7         |
|      22 | mpeg2audtype             | Layer II  |
|      22 | mpeg2audbitratel1        | 448       |
|      22 | mpeg2audbitratel2        | 384       |
|      22 | mpeg2audvolume           | 90        |
+---------+--------------------------+-----------+
 
 
mysql> select * from recordingprofiles where id = 22;
+----+-------+------------+------------+--------------+
| id | name  | videocodec | audiocodec | profilegroup |
+----+-------+------------+------------+--------------+
| 22 | MPEG2 | RTjpeg     | MP3        |            6 |
+----+-------+------------+------------+--------------+

 
What settings would I need to change/match/check to ensure that I'm not
transcoding into higher settings that would increase diskspace use?
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