44 replies to this topic

[Stan]

It's a matter of implementation. It was probably tested only with subtitles at the bottom.

 

There are 24 lines of teletext, I doubt that the position of each line is correctly calculated.

Edited by Stan, 27 October 2024 - 13:54.

[WanWizard]

Quite possible . Either way, a bug that needs addressing...

[Stan]

I think I figured out what causes the overlapping:

 

Usually, teletext subtiltes are marked double-height. However, for this live transmission, ORF1 partially used normal-height subtitles.

I believe this is not the standard, maybe that's why this case is not implemented.

 

PS. Whether the subtitles are located on top or at the bottom, makes no difference.

 subtitles_orf1_normal-height.jpg   100.64KB   0 downloads

Edited by Stan, 27 October 2024 - 15:32.

[Stan]

A potential fix would be to check whether the line is normal- or double-height and adjust the background height and font size accordingly.

Edited by Stan, 27 October 2024 - 15:58.

[WanWizard]

I didn't have that last problem, when I had them at the bottom, I didn't see the extra space on top, the text was centered in the background, and the background was exactly high enough ( OpenPLi develop on an SF8008 ).

[ricki]

I did have the the last problem on the bottom today.

[Stan]

In this particular live transmission, ORF used both normal and double-height subtitles randomly. Maybe unintentionally, sloppy?

 

But if someone is willing to implement a fix, I can provide a short recording of this transmission for testing.

Edited by Stan, 27 October 2024 - 16:10.

[WanWizard]

I'm willing, but lack the skills...

[ricki]

More bad solution is

 

There is a way.
Change line in UsageConfig.py. ( See for what i changed at the end 450 to 950).

config.subtitles.subtitle_position = ConfigSelection(default="50", choices=["0", "10", "20", "30", "40", "50", "60", "70", "80", "90", "100", "150", "200", "250", "300", "350", "400", "950"])


Then i can choose when i want subtitles on top.

 

This works for me but every update i have to change it again.

Edited by ricki, 27 October 2024 - 16:47.

[littlesat]

Looks like it is broadcasted…. Can you also try and make a screenshot when showing these subs with tuxtext?

[Stan]

Please see posts #23 and #24.

 

Here are some screenshots, ttx vs. ttf when the teletext line is normal height.

 

 subtitles_orf1_normal-height_ttx.jpg   274.2KB   0 downloads  subtitles_orf1_normal-height_ttf.jpg   135.07KB   0 downloads

Edited by Stan, 27 October 2024 - 18:40.

[littlesat]

Looks like the broadcaster does the subs single hight instead of double height in teletext. When the characters are bigger for the nice rendering then they become too high. Here in the netherlands as far I know subs have double height.

[Stan]

Most broadcasters still use double-height subtitles as default. Although it is not mandatory.

This dates back to the era when television screens were much smaller.

Edited by Stan, 27 October 2024 - 22:55.

[Stan]

@littlesat

If I remember well, you have added the background option for teletext subtitles some time ago.

Would it be possible to adjust the height, depending on whether the line is normal/double-size?

[littlesat]

This was made 10+ years ago… and eg the font has one size. This is also the first time I see single height subs. The whole thing is made for double size. Teletext offers double and normal height characters. Technically single size is possible as we can see now. I’ve no idea if this is regards the dvb and/or ebu recommendations. But it is an exception here for the nice sub rendering as this way it does not fit with original location…. You also see our nice rendering had has also not really please to do a nice rendering.

Edited by littlesat, 27 October 2024 - 23:22.

[ricki]

Can someone help me to have it like this always, this works for me but every update i have to change it again?

 

 

Change line in UsageConfig.py. ( See for what i changed at the end 450 to 950).

config.subtitles.subtitle_position = ConfigSelection(default="50", choices=["0", "10", "20", "30", "40", "50", "60", "70", "80", "90", "100", "150", "200", "250", "300", "350", "400", "950"])

[littlesat]

950 is an impossible location.... as it is based on an SD grid from 720x576....

Edited by littlesat, Today, 14:40.

[Gold_66]

Sorry to hijack the thread, but are there any plans to add support for embedded .mkv subtitles?

It's quite a job to extract them from downloaded media with third party apps, convert to .srt format, rename same as the video file and upload to the box separately.

[ricki]

950 is an impossible location.... as it is based on an SD grid from 720x576....

I dont understand

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Edited by ricki, Today, 14:58.

[Dimitrij]

ricki

 

Change line in UsageConfig.py. ( See for what i changed at the end 450 to 950).

 

 

Dont delete this UsageConfig.py