[mythtv-users] Am I the only one with transcoding problems?
shadowfirebird at gmail.com
Fri Jul 10 13:49:22 UTC 2009
That's interesting, because I regularly transcode all the stuff I record --
to actually remove advert breaks and make the file smaller. And I archive
to DVD. By my experiences are different yet again.
I do get errors on certain programs & channels, but transcoding in a lossy
fashion (my "high" transcode has the non-lossy toggle set) seems to sort
I frequently (one time in 20?) find that after transcoding I've lost the
seektable data. Now I know how to fix that -- *always* specify the full
pathname on the command line to mythcommflag --rebuild -- I can work around
ProjectX is broken for me. I get a nasty command line error. And
furthermore there doesn't seem to have been any work done on the project for
about two years, so I've been assuming that it is, how shall I put it,
OTOH archiving to DVD works pretty well with only the occasional problem,
providing I remember to move the .ICEauthority file from my home directory.
No idea why -- google for it if you want to see a discussion of other people
with the same problem.
Confused yet? I am.
On Fri, Jul 10, 2009 at 2:23 PM, Tom Dexter <digitalaudiorock at gmail.com>wrote:
> On Fri, Jul 10, 2009 at 9:13 AM, jansenj<jansenj+myth at gmail.com<jansenj%2Bmyth at gmail.com>>
> > Ok,
> > So I've always had trouble with transcoding, and am starting to wonder if
> > I'm the only one. It seems about 50% of the time my audio is out sync,
> > sometimes by as much as 2 or 3 seconds! I've used mytharchive (mtd),
> > regular transcoding to .nuv, and most recently, I installed mythbuntu
> > and tried mythexport (ffmpeg) and my first attempt was about 2 seconds
> > of sync (audio vs video).
> > Is this just an artifact of trying to scale and convert ATSC HD
> > (from an hdhomerun)? Or am I just doing something wrong? My processor
> > isn't fast, but not bad AMD 3200. I have 3g ram...overkill. Fresh
> > of mythbuntu still caused problems.
> > Sometimes I'll get lucky and it'll work ok, but it happens enough that I
> > stay irritated at the problem quite often. I've resorted to using
> > to transcode videos that I want to ensure are converted correctly, and I
> > know I shouldn't have to be doing this.
> > Any suggestions? Or am I all alone with this problem?
> On the rare occasion I transcode any shows for DVD or whatever, I tend
> to use scripts of my own, so others here can speak for the current
> state of mythtranscode better than I.
> For me, projectx is the _only_ reliable way I've found to demux my OTA
> ATSC recordings without loosing sync just as you describe. With any
> other method I'm lucky if one out of three sync correctly.
> I think I remember some comment here that mythtranscode could be
> configured to demux with projectx or some such thing, but I can't
> remember for sure.
> mythtv-users mailing list
> mythtv-users at mythtv.org
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