Re: jerky movements with .MTS files

On Tue, Aug 17, 2010 at 2:02 PM, Atte Andr=E9 Jensen <[email protected]> wrote:
> On 2010-08-17 19:27, Dan Dennedy wrote:
>
> Wow. Thanks for a most kind, fortcoming and helpful mail!
>
>>> $ melt some.mts -consumer avformat:some.dv pix_fmt=3Dyuv420p
>>>
>>
>> You might want to add "progressive=3D1" onto the end of that command.
>> Otherwise, the output will be signalled as interlaced, which it
>> actually would not longer be.
>
> I didn't take it all the way through mandvd->DVD->dvd player->TV, but
> looking at it in kino, the movements seems just as jerky, unfortunately :=
-(

If the jerky playback on computer is similar to the jerky playback on
DVD->TV, then it is probably not field order. Incorrect field order is
very difficult to perceive on a progressive display. Can you provide a
short MTS sample that also exhibits this after being converted? You
can mail me privately a rapidshare.com link to dan -at- dennedy.org.

> I'm using melt 0.5.4, which I seemed I already had installed, probably ca=
me
> with something else (I'm using ubuntu 10.4). Could the problem be due to =
an
> outdated version? Or am I missing something?

That is not very old.

> A minor detail: players will see the files comming out of this command as
> 4:3, when they are in fact 16:9. Not a big deal, since I have 16:9 set in
> the kino prefs, forcing kino to treat them as 16:9...

$ melt -profile dv_pal_wide ...

> In any case I'm pleased to learn that what I experienced is not "just me",
> but a well-known problem with interlaced video! Would I loose anything,
> quality-wise, by using non-interlaced 25fps from now on instead of
> interlaced 50fps (if I read the setting in the camera correctly)?

50i is better at capturing motion than 25p. However, if you are
viewing it on a flat panel or other progressive scan, then they vary
quite a bit in how well they take advantage of interlacing to make
motion smoother.

> I hope to get this solved :-)
>
> --
> Atte
>
> http://atte.dk =A0 http://modlys.dk
>
-- =

+-DRD-+

---------------------------------------------------------------------------=
---
This SF.net email is sponsored by =


Make an app they can't live without
Enter the BlackBerry Developer Challenge
http://p.sf.net/sfu/RIM-dev2dev =