[mythtv-users] Transcoding SD MPEG2 to H.264---recommendations?

Nick Rout nick.rout at gmail.com
Tue Nov 30 00:46:15 UTC 2010


On Tue, Nov 30, 2010 at 7:54 AM,  <f-myth-users at media.mit.edu> wrote:
>    > Date: Mon, 29 Nov 2010 13:19:03 +0000
>    > From: "D. R. Newman" <d.r.newman at e-consultation.org>
>
>    > On 29/11/10 08:52, f-myth-users at media.mit.edu wrote:
>
>    > > However---the result was unusable.  The activity log was crammed full
>    > > of "audio 192 time went backwards 0 ms, dropped 1 frames" and "video
>    > > time didn't advance - dropped 1 frames" lines, and about halfway
>    > > through the transcode, it suddenly went from claiming it had 20
>    > > minutes to go, to done.  (It also said "sync: got 26887 frames, 60691
>    > > expected", which might explain a thing or two.)  And the result, as you
>    > > might expect, was a jumpy mess.
>    > >
>    > > I have no idea why this didn't work.
>
>    > One possibility is that the source file contains lots of errors. I
>
> I considered that, but c'mon.  It was just a normal PVR-250 recording
> from an STB.  It plays just fine.  It seems unlikely that every other
> frame (on average) has an error in it.

What are you using to play the file? Are you keeping the exact
filename that you were transcoding and then expecting myth to play it
in place of the recorded programme you started with? That won't work
well because the recordedseek table will be up the wop (TM technical
term).

Again if you are giving it a new name and plonking it in mythvideo, it
may need a seektable built.


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