[mythtv-users] Bluray/m2ts high bitrate and resolution tips

Greg Oliver oliver.greg at gmail.com
Fri Dec 17 21:45:13 UTC 2010


On Fri, Dec 17, 2010 at 3:37 PM, Nick F <nikos.f at gmail.com> wrote:
> On Fri, Dec 17, 2010 at 3:13 PM, Greg Oliver <oliver.greg at gmail.com> wrote:
>> I just got a bluray drive for my backend, and also have a a lot of
>> camcorder files in the same format.  I have been trying unsuccessfully
>> to make the playback smoother, so wanted to see what others are doing
>> - other tnan transcoding  :)
>>
>> The required network peaks at about a constant 45 mb/s for my
>> camcorder files, and the bd movies I have copied off seem to max at
>> 42, although the raw content is 36, so the IP and Myth overhead.
>>
>> My main issue is seeking.  To a remote frontend (revo 1600) it is
>> almost unplayable if I try and seek.  I can literally wait about a
>> minute for a seek to complete.   I just had a thought to build a seek
>> table for these, so I will try that.  On the machine it is stored on,
>> it is quite a bit better, but it is a beefy machine, so I would expect
>> it to be very good.  Reading about the HD Ringbuffer size makes me
>> think it is irrelevant in regards to this, and changing it seems to
>> not make a difference.
>
> I don't have any issues playing back m2ts files from my bluray discs.
> I have a GigE network and play back on ION frontends / vdpau.  With
> the files I have issues with a quick seek table rebuild normally cures
> things.  mythcommflag --video XXXX.m2ts

Sounds similar to my setup.  I was just about to re-post to say that
rebuilding the seektable solved it.  I should have thought of that
earlier since I have had to do it once before.  I'll add it to my
scripts that copy from sdhc to the backend.


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