Teletext pin

[Johan Duinkerken]

teletext is still showing some strange behaviour though and there are still no .srt files... However, there is a very likely suspect and that is "pin naming". MS, in its' infinite wisdom, made some pin names (codec pins, that is) hard named while other names were locally named. Which is quite dumb.

However, you might try playing around with Graphedit, using the examples of SHSPVR; it showed me the Dutch pin names...

I guess there are more wrong pin names around, maybe sub could find a workaround for that?

Cheers,
Johan.

[sub]

teletext is still showing some strange behaviour though and there are still no .srt files... However, there is a very likely suspect and that is "pin naming". MS, in its' infinite wisdom, made some pin names (codec pins, that is) hard named while other names were locally named. Which is quite dumb.

Were you able to view the teletext page that has your subtitles? If so, then it should be able to capture the .srt for these. You needed to have configured the correct subtitle page against that channel in the capture source settings.

That has been some fixes in SRT capture in the next release, so these may help.

I guess there are more wrong pin names around, maybe sub could find a workaround for that?

I've been aware of the localized naming of the some of the pin names for a long time. I've changed the code to specifically cope with some of the key ones that have caused problems, but I know there are other like this example that are lurking. To be honest though, its just too much hassle to try and code around all of them.

As much as its a pain, there will be occasions when some GB-PVR functionality just plain wont work unless you can force your machine to use the english naming for these pins. Sorry - harsh I know...

[Johan Duinkerken]

At the moment, this is what's happening with subtitles (tested at BBC1, page 888):
0) I start out with watching BBC1, PAL, on LiveTV, computer monitor
1) when I select teletext by pressing ctrl-R, teletext appears
2) when I select page 888, subtitles appear in teletext font *and* in some subtitle font
3) when I disable teletext by pressing ctrl-R again (if I remember correctly), the subtitles in teletext font disappear but the other subtitles (in some subtitle font) are still there! This is way cool, because they are *much* nicer to watch.

OK, but this is not what you ment it to do, because I don't get .srt files. Some questions:
a) where do these "nice" subtitles come from. Is the .srt-stream somehow guided back into the system to make those nice subtitles? Mind you, I'm not talking about the subtitles in teletext-font
b) Because of those nice subtitles, it would be nice to embed the VBI-stream into the mpeg-file; the subtitles can be retrieved without any .srt-processing. Nice idea? I know it's technically feasible for a PVR-350

Further remark: I'm not totally sure, but it seems sometimes subtitle lines get dropped... If you need help creating accurate .srt files from teletext subtitles, I think I can help you out. Just give me a call (or e-mail)

Cheers,
Johan Duinkerken.

[sub]

a) where do these "nice" subtitles come from. Is the .srt-stream somehow guided back into the system to make those nice subtitles? Mind you, I'm not talking about the subtitles in teletext-font

I'm only aware of one font. Can you post screenshots of the two fonts your see so I know what your talking about?

b) Because of those nice subtitles, it would be nice to embed the VBI-stream into the mpeg-file; the subtitles can be retrieved without any .srt-processing. Nice idea? I know it's technically feasible for a PVR-350

No, I wont be doing this. There are some technical challenges with this approach that'd I'd rather not have to solve. Instead I will just save the text from the teletext subtitles into a srt text file.

[Johan Duinkerken]

OK, that's clear

I'll try to make a screenshot tonight.

[Johan Duinkerken]

...however...

Maybe it's possible to show teletext-subtitles if VBI is already embedded in the mpeg-file? It's quite easy to obtain mpeg-files with embedded VBI, so it might be a nice feature to be possible to watch the subtitles based on the embedded VBI...

[sub]

I wont be embedding the VBI information in the MPEG file.

[Johan Duinkerken]

and that's definitely not what I'm suggesting; my suggestion is, to use already embedded VBI while *playing* some mpeg-file... no need for you to embed VBI, there are other ways to do that!

[Johan Duinkerken]

Here are the promissed screenshots. First a screenshot of BBC2, teletext and .srt files enabled, view mode "live TV" on computer screen, called "zonder_tt.jpg".

After pressing ctrl-R and selecting page 888, I get a black screen with teletext subtitles; presumably I have to set something like "opaque" or "transparent" somewhere in some config screen. Shown in screenshot "met_tt.jpg"

[sub]

The first picture picture (zonder_tt.jpg) shows the built in subtitle viewer, and will be what is ultimately shown you record subtitles etc. In v0.93.10 the text is a semi-transparent, and can be a little difficult to read, but in the next release it is opaque (looks better/easier to read).

The second picture is just showing a teletext page. It happens to be a subtitle page, but its just like any other teletext page, and uses GB-PVR teletext render/fonts. This is not a very good way to view subtitles - it can only be for live preview mode TV. It cant be used when in timeshift mode and cant be used with recordings. This font is a bit better in the next release.