[mythtv-users] List of recordings by disc drive -Solved
John Finlay
finlay at moeraki.com
Tue Feb 10 00:38:28 UTC 2015
On 2/9/2015 1:47 PM, Karl Newman wrote:
> On Mon, Feb 9, 2015 at 1:20 PM, Mike's JdJ <stepsisters at comcast.net
> <mailto:stepsisters at comcast.net>> wrote:
>
>
> On 02/09/2015 12:53 AM, Bill Meek wrote:
>
> On 02/08/2015 10:48 PM, Stephen Worthington wrote:
>
>
>
> Here's a script using Python bindings that can probably be adapted
> to print what was requested (for the 1st part.)
>
> http://pastebin.com/wfpBfQ19
>
>
> Thanks to Mike, Hika, Stephen, and Bill for the responses.
>
>
> I ran Bill's report and it had the path/filename in it. I took
> the output and imported into LibreOffice Calc. I chose fields for
> the disc name and the timestamp portion of the file name. I then
> sorted on disc and timestamp. This gives me a list of titles
> chronologically per disc. Multi-step, but this is a one-time need.
>
> My goal is to use my newly-developed skills in editing and
> transcoding and go after my two 1.8 TeraByte discs that are 98%
> full. My other two 1.8 TB discs are at 66% and 80% full. The DBA
> in me says to start with the oldest file in the fullest disc
> first, then reduce the size of the next-oldest file, and so on.
> With 1,883 recordings, this will take a while.
>
>
> The general sense on this list is that it's cheaper to add storage
> than to spend the electricity to transcode in order to save space.
> Obviously you already have a number of disks so I'm guessing you have
> physical space reasons for wanting to transcode instead of adding drives.
>
This depends on the cost of electricity, the speed of the transcoding
computer and the quality of the output. My experience with a fast quad
core i7 and $0.20 per kwh electricity transcoding 720p recordings from
mpeg2 to h264 shows that transcoding is much cheaper than buying a new
disk by an order of magnitude. Of course deleting old recordings is much
cheaper than that.
Example transcode: 15m to transcode a 4GB 1h mpeg2 to 1GB h264 using
handbrake in an i7 system that uses 70w.
70*.25/1000 = .0175 kwh at $0.20/kwh = $0.0035 for 3GB gain is
$0.00116/GB saved
A 2TB drive that costs $70 costs $0.034/GB
John
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