[CinCV TNG] Cinelerra renders a jerky movie

Good Guy good1.2guy at gmail.com
Wed Dec 14 18:32:19 CET 2016


Hi, Thanks!

Sorry to say, the first and second file are both the same:
MOV007.mpg  (no MOV007.TOD)

These file types seem to be hard to locate.
Please send the original TOD file via datafilehost.com.

gg


On Wed, Dec 14, 2016 at 10:02 AM, Evaessen at ziggo Nl <evaessen at ziggo.nl>
wrote:

> Hello Phyllis,
>
> I send 4 files:
>
> 1. The original TOD-footage
>
> 2. The mpg footage, derived via the command ffmpeg -i MOV007.TOD -acodec
> copy -vcodec copy MOV007.mpg
>
> 3. The session file
>
> 4. The rendered file.
>
> Ed
>
> https://www.datafilehost.com/d/d67f6472
>
> https://www.datafilehost.com/d/3e445164
>
> https://www.datafilehost.com/d/bc0bc00a
>
> https://www.datafilehost.com/d/dcf40ee3
>
> Regards,
>
> Ed
>
>
>
> Op 13 december 2016 om 17:25 schreef Phyllis Smith <
> phylsmith2004 at yahoo.com>:
>
> *Jonathan wrote:*"Without seeing a sample it's hard to say what might be
> happening.
> ...
> but see if you can
> explicitly specify the field order. Set it to "top first"; see if that
> is propagated to the encoder and whether it improves things."
>
> That sounded like it might fix the problem!
>
> As pointed out though, need a complete description of the problem AND
> to see a small sample of the jerky leg issue.  Can you supply a small
> sample of the original JVC input and a session file used with that
> sample and upload it to *datahostfile.com <http://datahostfile.com>* ?
> It would be nice to see the
> rendered result as well, if possible also send a representative snippet of
> it.
> Finally, to be sure I am using the same transcoding setup, send the
> session file used to render the result, using menubar file->save_as
> as defined just before your rendering step.
>
> *To create a test snippet*, open the input media, setup as you normally
> would to start the project render.  Then, select a few seconds (5-10?) of
> media using the edit mode ptr1 button drag highlighting on the timeline.
> Then, start the render dialog (Shift R), set the target path, and select
> render selection.  I recommend setting replace current project, then
> Press OK.  The result will load replace the current project for review.
> If it is ok, please send me the input, output, and session file.
> If it is not ok, or does not represent an example of the issue you see,
> press 'z' to undo the render and reload the original to modify the
> setup, and repeat until you see the problems you wish to demonstrate.
>
> To see if there were any missed problems with the 11302016 release, GG
> recorded broadcast TV (we don't have any "fancy" cameras) and then rendered
> it as a regular DVD and also to a blu-ray.  He just used defaults and it
> just worked with no problems.  He has been making dvds/blurays for several
> years now without issues.
>
>
>
>
>
>
> ------------------------------
> *From:* "Evaessen at ziggo Nl" <evaessen at ziggo.nl>
> *To:* Jonathan Woithe <jwoithe at just42.net>; cinelerra <
> cinelerra at mail.cinelerra-cv.org>
> *Sent:* Tuesday, December 13, 2016 8:11 AM
> *Subject:* Re: [CinCV TNG] Cinelerra renders a jerky movie
>
> And to it I can add that also in the compositor the problem occurs.
> So it is not only a matter of how it is rendered.
>
> Ed
>
>
> Op 13 december 2016 om 14:00 schreef "Evaessen at ziggo Nl" <
> evaessen at ziggo.nl>:
>
> Hello Jonathan,
> 'Jerky' was perhaps not the best way to describe it.
> But on the movie I see a man walking and sometimes his leg stops for a
> fraction of a second, then swings forwad fast.
> When the camera sways from right to left, compression artifacts like a
> bunch of small squares appears.
> It is not an interlace matter.
>
> Ed
>
> Op 13 december 2016 om 1:06 schreef Jonathan Woithe <jwoithe at just42.net>:
>
>
> On Mon, Dec 12, 2016 at 11:26:29PM +0100, Evaessen at ziggo Nl wrote:
> > After editing, I always rendered the movie as a YUVMPEG stream wit this
> > pipe:
> >
> > ffmpeg -i - -y -vcodec mpeg2video -b 60000k -r 25 -g 1 -top 1 -flags
> > +ilme+ildct -aspect 16:9 %
> > After mixing it with sound, I invariably had a good movie.
> > Cinelerra 5.1 looks easier. Having more codecs available with it, I can
> render
> > my movie to Blu-ray with simpel default settings.
> > Alas, the movie is jerky, ...
>
> Without seeing a sample it's hard to say what might be happening. Are the
> jerky motions most obvious in the horizonal direction? If so it might be
> a field order issue. In your pipeline you are specifying that the top field
> is first (presumedly your footage is interlaced). The default settings in
> Cinelerra 5.1 might assume bottom field first or may leave it unspecified
> (in which case the encoder might be adopting a default of bottom-first).
>
> I'm not familiar with the options available in cin5.1, but see if you can
> explicitly specify the field order. Set it to "top first"; see if that
> is propagated to the encoder and whether it improves things.
>
> Regards
> jonathan
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