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Thread ID: 66541 2006-02-26 21:00:00 Recording teletext subtitles ianboag (9874) PC World Chat
Post ID Timestamp Content User
434021 2006-02-26 21:00:00 I've seen posts about this before but I can't quite make sense of them. That's because I'm oldish and of restricted intelligence of course :-)

The desired outcome here is to take a captioned program off TV1 or TV2 and produce a DVD that has the captions in it. My Russian daughter-in-law would find this really handy for improving her English. Also the local ESOL Home Tutor people are interested.

I have an HDD/DVD recorder. Here's where I have got to ....

If I take an AV TV1 feed off the Sky decoder and plug it into a AV input in the TV I get the captions just fine (after the 801 Teletext selection etc).

If I run the same TV1 output from the Sky decoder into the HDDR and then into an AV input on the TV the captions aren't there (the picture is of course)

Ideally I'd like to communicate directly (phone email whatever) with someone who knows how to do this - I gather it is doable and I'm sort of surprised that how to do it is not more widely known. The HDDR's are a whole new world for recording off TV and running it out to DVD.

Cheers Ian
ianboag (9874)
434022 2006-02-26 23:59:00 If you look at the posts here by Ex-Westy, it appears that all currently available DVD recorders strip that signal out before encoding exactly as you have found, so you may need to "massage" the signal first to embed the subtitles.

I would try the AV output of a VCR, with the VCR AV input connected the subtitled video from the Sky decoder. There is a chance it will get correctly embedded in that process (internally in the VCR, though it might depend on make and model), plus its easy to try.
godfather (25)
434023 2006-02-27 00:32:00 The trouble with what you suggest Godfather is that the teletext subtitles aren't recorded by a bog standard VCR nor a harddrive DVD recorder. In both cases the signals are stripped to allow room for the other data.
In Ian's case with most others the TV has the Teletext decoder and if it's not getting the signal then there is nothing to decode.

The only way(s) do do it are using a SVHS VCR recorder, rare as hens teeth these days although JVC still put a model I think. Still the titles are not shown on the tape but must be decoded by the tv when played back, therefore the playback VCR must also be SVHS or compatible.

The way I have done mine is acquiring a NEC Teletext decoder set to page 801, hooked into a Hi Fi VHS VCR that is merely used to pick the channel for decoding, video and audio feed then fired thru the decoder and the output going into the DVD recorder on an AV input. This results in a stereo clip with subtitles that do not have to be played back thru a Teletext capable tv. The results from this method are also superior to the SVHS recorder that I bought last year also before I worked out to find a decoder and then I could buy the DVD recorder I really wanted to Get in the 1st place. The SHVS is very reliant on the quality of the VHS tape used. SVHS tapes are expensive and can't be found for looking anyway. The JVC method allows a standard tape to be used but I have problems with words dropping out and being incorrectly spelt etc whereas the decoder/dvd option is crisp and clean.

Whats really needed are the dvd manufacturers to produce a machine that either records the signal or has an onboard decoder. From my investigations and research I believe there is a strong market amongst the hearing impaired.
EX-WESTY (221)
434024 2006-02-27 03:52:00 i can say there'd be over a million purchases of a device that can record captions directly with the program onto dvd or vcr (preferably dvd if we going with the times not backwards)...theres all the deaf people, and hearing impaired, and of course ESOL people for learning english....
its a market there, but whos gonna make the technology? surely theres something in the states, as thers over 10million deaf people along with god knows how many oldies going deaf and all that...and their advances in technology...

(edit)
I know someone who attended gallaudet university in the states, if you really want to know more I can ask her if there is really anything around that can do the captioning recording. I'd probably ask her anyway as I'm keen as to know myself (I'm deaf too)
csinclair83 (200)
434025 2006-02-27 04:43:00 What I was suggesting Ex-Westy was to try "buffering" the signal via a VCR, not recording the signal to tape in any way. Just using AV in and AV out as a "pass through"

I am aware the bog standard VCR strips the signal out when recording, but I was wondering if it actually "embeds" the subtitle signal in the AV output when its just passing it through?

Once the captions are embedded in a video stream (and not as a separate layer) they would be unable to be stripped out beyond that point.

It might be a wild goose chase, but my small knowledge of composite AV signals also suggests its a possibility.
godfather (25)
434026 2006-02-27 06:49:00 That I can test out easy enough later tonight, I'll unplug the decoder from the circuit and record to the DVD hard drive for a while then play back and see how the decoder on the TV fares......... EX-WESTY (221)
434027 2006-02-27 09:39:00 Thats a big NO
Panasonic HiFI VHS recorder hooked up directly to the AV3 input on the DVD recorder then played back on a LG Tv with teletext subtitles page active, all I had was a black screen and sound. No Teletext data found to decode.
EX-WESTY (221)
434028 2006-06-25 10:15:00 Hi Ex Westy

Have been reviewing your posts, and have purchased a Teletext decoder off tradme to try revording with subtitles.

I see how you have got a VCR and Decoder working through a DVD recorder. But since I do not currently have a DVD recorder (Next on list) do you know if you can put the teletext decoder prior to the VCR stage for recording txt to DVD?

Cheers

red89mx :confused:
red89mx (9875)
434029 2006-06-28 12:08:00 Hi Ex Westy

Have been reviewing your posts, and have purchased a Teletext decoder off tradme to try revording with subtitles.

I see how you have got a VCR and Decoder working through a DVD recorder. But since I do not currently have a DVD recorder (Next on list) do you know if you can put the teletext decoder prior to the VCR stage for recording txt to DVD?

Cheers

red89mx :confused:

No

You must have a tuner in front of the Teletext decoder to pick the channel that you wish to display the subtitles from.

If you merely connect an aerial to the decoder it will be recieving all channels and can't pick the txt data for any particular channel.

Therefore using either aerial input or RCA's ( I've gone for the RCA's) connect the video signal and one channel of audio thru the decoder and pass thru to the recording device be it another VCR or a DVD recorder.

PM me if you need further in depth discussion or instructions if you wish
EX-WESTY (221)
434030 2007-04-17 06:48:00 Hi Ex-Westy

Sorry it has been so long between replies, my spam filter must of grabbed the email alert.

Video has finally died and I am looking at a HD DVD recorder now, so revisiting the Teletext issue. Briefly considered building a media PC but do not think that they are as userfreindly for non PC people.

Have you upgraded you solution or is it still;

TV Receiver (Spare TV/VCR) to Teletext Decoder to Recording device (VCD/DVD)?

Would appreciate talking to you about it - my cell for txt is 0272771124, Txt me # or email address.

Cheers

Alan (red89mx)
red89mx (9875)
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