[mythtv-users] FIXED: Can't reexport SMB share over NFS...what am I doing wrong?

Kevin Kuphal kkuphal at gmail.com
Tue Sep 14 01:23:33 UTC 2010


On Mon, Sep 13, 2010 at 4:40 PM, Scott Alfter <scott at alfter.us> wrote:

> On 10 Sep 10 11:26, Raymond Wagner wrote:
> > Just mount the CIFS share directly on your frontend, or better yet, use
> storage
> > groups and let MythTV share it for you.
>
> I migrated my videos over to storage groups; it didn't appear to fix the
> problem.  I eventually figured out where I was going wrong: Matroska files,
> as
> near as I can tell, still don't play well with MythTV.
>
> I had some files that played properly and others that didn't.  Looking at
> network traffic on the files that didn't play properly revealed that they
> were
> streamed in high-bandwidth bursts about 20 seconds apart, with little to no
> traffic in between.  Watching mythfrontend's stdout while it played these
> files
> revealed prebuffering pauses every 20 or so seconds.  The files that did
> play
> OK streamed at a more-or-less constant bitrate.  A page I ran across
> somewhere
> (may have been the MythTV wiki) recommended making sure a seektable was
> built
> for each file you're playing if it skips and stutters.  After figuring out
> that
> seektable entries for videos are in the filemarkup table, I saw that there
> were
> no seektable entries for any Matroska files, even after running
> mythcommflag
> with the appropriate options.
>
> The files that played OK tended to be other formats: MPEG-2 program streams
> and
> transport streams recorded by MythTV, AVI files, M4V files, etc.  The files
> that glitched tended to be Matroska (MKV) files.
>
> It would appear that mythcommflag doesn't generate seektables for Matroska
> files.  Without a seektable, the backend has to guess at how much video to
> send
> at a time...and it appears to do a not-so-good job with the files in my
> collection. :-(
>
> I'm now going through my collection with tsMuxeR, converting files from
> Matroska to MPEG-2 transport streams (most of my files contain H.264 video
> and
> AC3 audio).  These files, once seektables are created for them, play
> without a
> hitch.  The only downside is that I had backed up most of the Matroska
> files to
> a stack of BD-Rs a while back, but I guess I can redo this conversion from
> the
> backup in the future if necessary.
>

I think mythtranscode can build seektables.  Check the command-line options.

Kevin
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