[mythtv-users] Best settings for transcoding HD content to save space?
Karl Dietz
dekarl at spaetfruehstuecken.org
Tue May 13 07:27:53 UTC 2014
On 13.05.2014 00:52, Ben Kamen wrote:
> I've been looking at my drive space wondering if I can trim down
> per/show usage by good transcoding settings.
>
> So I thought I'd solicit the group to see how they have their
> transcoders set..
I just use lossless cut to convert to a more efficient container format,
cut off unwanted parts before/after/within the show.
The next thing will be removal of unwanted audio tracks. (there's no
point in storing 4 copies of the same track like some broadcasters
transmit over here. (1: the audio in good old MPEG-2 audio, 2: the
alternate (but often identical) audio in good old MPEG-2 audio, 3: the
audio in fancy new AC3 5.1, 4: another alternate (but often identical)
in good old MPEG-2 audio.)
Guessing you are based in the US that should work for your HD MPEG-2
recordings, too. You could also get one of the new devices that convert
from MPEG-2 to MPEG-4 AVC internally to reduce the bitrate, but you lose
loss-less cut (patches appreciated). Depending on the amount of slack
you need to account for in your startearly/endlate settings you safe
more space with the first (stay MPEG-2 but cut) or second (reencode but
don't cut) variant.
Regards,
Karl
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