[mythtv] 2019-devel: mythpreviewgen still segfaulting on some h264-progressive recordings

[Mark Kendall]

Thanks John,

Should be fixed in the render branch. Looks like it was a change in
the FFmpeg/libswscale implementation - I would expect the same issues
in master.

Regards
Mark

On Tue, 26 Nov 2019 at 11:01, John Pilkington <johnpilk222 at gmail.com> wrote:
>
> On 22/11/2019 09:50, John Pilkington wrote:
> > On 22/11/2019 08:14, Mark Kendall wrote:
> >> On Thu, 21 Nov 2019 at 14:05, John Pilkington <johnpilk222 at gmail.com>
> >> wrote:
> >>> But mythpreviewgen for the output segfaults immediately after opening
> >>> the H264 codec.
> >>
> >> John
> >>
> >> Any chance of a backtrace and logs? There's not a lot I can do without
> >> them. A sample would be even better.
> >>
> > Mark:  Thanks.  I'm not too worried about the previews, but something is
> > peculiar.  It seems that for *any* 1920x1080 h264 recording that I have
> > tried, if I rename the preview file no new one is created.  New HD
> > recordings don't have preview images.
> >
> > For 544x576 h264, previews come back when needed.  Intermediate
> > resolutions still unpredictable.
> >
> > If you don't have recordings that do this I can post a clip.  I haven't
> > done a backtrace recently.
>
> Hi Mark:  Your latest post on this seems to have vanished from this box,
> and the F30 box with the HD recordings is now running master, where some
> new previews from HD have been created but with severe 'line-hold'
> problems; and when I tried from a konsole I got an omx complaint and a
> segfault.  Here's a clip that I made earlier.
>
> https://drive.google.com/open?id=1yQjyTQNgy9mwXpdl7jtZbX17P5R6tgCu
>
> >
> > Regards,
> >
> > John
>
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