[mythtv-users] Subtitle clarity

[Alexander Fisher]

On 6 June 2012 20:49, Jim Stichnoth <stichnot at gmail.com> wrote:
> On Wed, Jun 6, 2012 at 8:44 AM, Michael T. Dean <mtdean at thirdcontact.com> wrote:
>> On 06/06/2012 11:32 AM, Alexander Fisher wrote:
>>>
>>> Does anybody else have issues with some subtitles (from dvd rips),
>>> being really difficult to read?
>>>
>>> I started watching 'Jean de Florette', with English titles turned on,
>>> but gave up until I figured out how to fix this issue.
>>>
>>> The titles are large enough and appear in the correct part of the
>>> screen, but they look really odd.  They're grey, with a thin white
>>> edging.  With no antialiasing, this looks awful.
>>> The same mkv file played with VLC is *much* more pleasing with solid
>>> white titles that are easier to follow.
>>>
>>> Before I open a ticket and attach a sample, I thought I'd check to see
>>> if it was a known issue.
>>>
>>
>> DVD subtitles are image-based subtitles.  It's likely a problem with either
>> bad mastering of the DVD or the scaling of the images and/or overlaying them
>> on the video that's making them bad.
>>
>> In other words, since they're not text-based, it's not a font problem we can
>> fix.
>>
>> It is possible that there is some kind of color palette/transparency issue
>> in the code, but you should definitely try playing back that DVD with
>> another DVD player to see if it's just as bad there.
>
> From the description, I would bet on a color palette issue, either
> from a MythTV problem or from an underlying ffmpeg problem.  I haven't
> seen this issue before.  Please do create a new ticket with a sample
> and I will investigate.

Hi Jim

Firstly, thanks for spending so much time looking into all the recent
subtitle issues I've been reporting.
It's very much appreciated.  I've opened a ticket with a link to a 60
second sample.
http://code.mythtv.org/trac/ticket/10811

Kind Regards,
Alex