Under the vhs-decode project (aimed at FM RF archiving tapes fully with the entire signal frame VBI included) thanks to the chroma encoder we can generate software 4fsc composite or s-video on file and embed any VBI data we want into it's luma channel VBI space, then play it back over a DAC as a standard PCM stream. It should be noted the software route you described at the start is normally is HackTV and you can use a HACKRF orignal or clone or just use what we have at the decode projects a 10USD VGA dongle (FL2K) with a 3rd party driver, but its cool to see legacy hardware played with!
Great video, so excited to follow this in case the project continues or you just find more encoding software. After getting an SVHS editing deck last year I was thinking of getting one of these encoders from Ebay, figuring out Line 21 captions, AND trying to figure out how to get them onto VHS tapes. That's the endgame for me, having CC on homemade tapes. Your luck finding the archived software really inspires me to get back to it. If the project goes anywhere I'll try to make a video too!
12:37 It actually isn't called "Teletext", but rather Text. Teletext is what was used in European countries up until the 2010's, or so & Text was briefly used in North America, mostly by ABC, in the late 80's-early 90's. I do have a video on my other channel "R66F" called "Demonstration Of T1 & T2 Closed Captioning Text, Circa 1991" that shows the text function in action (I admittedly made the same mistake in referring to Text as Teletext in that video as well!). Otherwise, good video!
I just found out about your channel and I'm a little shocked I just found someone with the same obsessions I have (even watching Technology Connections a bit too much)
Try to watch digital tv on an analog transmission. You probably could use a capture card on a modern tv and connect it to an analog transmitter thing so an old tv can pick up the signal.
Take a foreign language film on DVD and record it to VHS with... 1. anamorphic video to record the widescreen version without wasteful letterboxing, requires a widescreen TV or hacked 4x3 CRT TV or converter for proper playback. 2. English dub (yuck) or commentary track on the linear (non-hifi) track. I did this via a second pass on and early VHS deck with a sound dub feature. Course people without hifi playback will be limited to the alternate track. 3. English subtitles recorded as CC, maybe both English and foreign. I've done the first two but I'm not sure how I'd send the DVD subs to this thing if I had it.
Yeah I still want to figure out something like that.. I'm thinking I could have a script that sends the captions over serial in sync with the DVD as I'm recording it. Then pass the output of the DVD player through the encoder and to the VCR
Amazing video! I enjoyed the in depth overview of the CC device! I’m thinking of getting one myself, though I have a question. What languages are supported for CC on this device? I heard you said that there were different channels for different languages of the model you were reviewing, thank you again!
Thank you! I think it supports whatever you feed into it. CC1 is usually for the language that the program is in, and the alternate channel is usually for a second language that is in sync with the program. It just depends on the software sending the proper language.
Im not sure but I think that the reason theres black spaces around the analog signal is so that the crt has enough time to get the electron gun into place for the next line. I have no reason to think this besides that a VGA output does the same thing and if the space outside isn't black (white for example) it could accualy break crts its connected to
@@SimonVideo You can try contacting TV stations near you and ask if they have old, analog SAGE equipment. Many hoarded all their analog gear after the digital transition. And if you get in touch with a motivated chief of engineering, you might have more analog gear on your hands for free than you can handle ;)
Oh, my gosh. This is actually crazy. So I could caption something, maybe pull some strings and get the video of what I captioned on analog TV, and look at my captions on old caption fonts? Sounds pointless, but it would be cool to see my positioned captions and everything handled. I also wonder what would happen if you attempted to go over 32 characters or four lines. I should learn more about digital TV, though. I'm not sure why captions are still limited to 32 characters per line, not that that doesn't make sense--we're using monospaced fonts still, right? But even then, why? We're not really using Line 21 anymore. Oh, well--compatibility.
I built the same analog transmitter that you made and unfortunately didn't work, I think it's just because I had HDTV antennas so I have older ones on the way. Hopefully that works
@@SimonVideo oh hi, thanks for responding. I actually got it to work. I was just dumb and the TV was on cable mode instead of antenna :/ it's definitely not as clear as yours but it works and that's all that matters lol
Also, I was lucky enough to borrow a BMPCC 6K for this video. The file sizes are absolutely insane on that thing.
nice thing that you discovered teletext
Under the vhs-decode project (aimed at FM RF archiving tapes fully with the entire signal frame VBI included) thanks to the chroma encoder we can generate software 4fsc composite or s-video on file and embed any VBI data we want into it's luma channel VBI space, then play it back over a DAC as a standard PCM stream.
It should be noted the software route you described at the start is normally is HackTV and you can use a HACKRF orignal or clone or just use what we have at the decode projects a 10USD VGA dongle (FL2K) with a 3rd party driver, but its cool to see legacy hardware played with!
your videos are so underrated
Fr
Great video, so excited to follow this in case the project continues or you just find more encoding software.
After getting an SVHS editing deck last year I was thinking of getting one of these encoders from Ebay, figuring out Line 21 captions, AND trying to figure out how to get them onto VHS tapes. That's the endgame for me, having CC on homemade tapes. Your luck finding the archived software really inspires me to get back to it. If the project goes anywhere I'll try to make a video too!
Definitely trying to do more with it and yeah having CC on homemade tapes would be awesome! I'll look out for a video from you! Hope it works out!
12:37 It actually isn't called "Teletext", but rather Text.
Teletext is what was used in European countries up until the 2010's, or so & Text was briefly used in North America, mostly by ABC, in the late 80's-early 90's.
I do have a video on my other channel "R66F" called "Demonstration Of T1 & T2 Closed Captioning Text, Circa 1991" that shows the text function in action (I admittedly made the same mistake in referring to Text as Teletext in that video as well!).
Otherwise, good video!
Good to know! Thank you!
I just found out about your channel and I'm a little shocked I just found someone with the same obsessions I have (even watching Technology Connections a bit too much)
Ha! No way! Glad there's someone else out there 😂
yooo
your analog content is so cool
today i bought the materials to do my analog TV channel, i'm so excited!!
That's awesome!
@@SimonVideo and now combine that to a VCR to record it to VHS and combine the VHS effect and signal lost effect 😏
Try to watch digital tv on an analog transmission. You probably could use a capture card on a modern tv and connect it to an analog transmitter thing so an old tv can pick up the signal.
I was thinking of doing that with multiple analog channels. It would be like having analog tv broadcasts
@@SimonVideo that would be cool
Time to make a 24 hour tv channel
Take a foreign language film on DVD and record it to VHS with...
1. anamorphic video to record the widescreen version without wasteful letterboxing, requires a widescreen TV or hacked 4x3 CRT TV or converter for proper playback.
2. English dub (yuck) or commentary track on the linear (non-hifi) track. I did this via a second pass on and early VHS deck with a sound dub feature. Course people without hifi playback will be limited to the alternate track.
3. English subtitles recorded as CC, maybe both English and foreign. I've done the first two but I'm not sure how I'd send the DVD subs to this thing if I had it.
Yeah I still want to figure out something like that.. I'm thinking I could have a script that sends the captions over serial in sync with the DVD as I'm recording it. Then pass the output of the DVD player through the encoder and to the VCR
Amazing video! I enjoyed the in depth overview of the CC device! I’m thinking of getting one myself, though I have a question. What languages are supported for CC on this device? I heard you said that there were different channels for different languages of the model you were reviewing, thank you again!
Thank you! I think it supports whatever you feed into it. CC1 is usually for the language that the program is in, and the alternate channel is usually for a second language that is in sync with the program. It just depends on the software sending the proper language.
i havent watched it yet but doing a 90s 80s captions with teletext on a real analog channel would be sick
that it totally awesome! great video!
Im not sure but I think that the reason theres black spaces around the analog signal is so that the crt has enough time to get the electron gun into place for the next line. I have no reason to think this besides that a VGA output does the same thing and if the space outside isn't black (white for example) it could accualy break crts its connected to
Yep, it's also to let the beam get back. It fully shuts off the electron gun
Pretty cool! Now add an SAGE ENDEC 😀
😂 Yeah I've looked into it but I can't justify the price :(
@@SimonVideo You can try contacting TV stations near you and ask if they have old, analog SAGE equipment. Many hoarded all their analog gear after the digital transition. And if you get in touch with a motivated chief of engineering, you might have more analog gear on your hands for free than you can handle ;)
Oh, my gosh. This is actually crazy. So I could caption something, maybe pull some strings and get the video of what I captioned on analog TV, and look at my captions on old caption fonts? Sounds pointless, but it would be cool to see my positioned captions and everything handled. I also wonder what would happen if you attempted to go over 32 characters or four lines.
I should learn more about digital TV, though. I'm not sure why captions are still limited to 32 characters per line, not that that doesn't make sense--we're using monospaced fonts still, right? But even then, why? We're not really using Line 21 anymore. Oh, well--compatibility.
Yeah you could! When I go over the limit I think the encoder cuts it off. And yeah at some point I want to try some digital TV stuff.
I built the same analog transmitter that you made and unfortunately didn't work, I think it's just because I had HDTV antennas so I have older ones on the way. Hopefully that works
Interesting.. I'm not sure if the antenna will help much? I don't know.. keep us updated!
@@SimonVideo oh hi, thanks for responding. I actually got it to work. I was just dumb and the TV was on cable mode instead of antenna :/ it's definitely not as clear as yours but it works and that's all that matters lol
Cool!
this is amazing
how can I do this digitally like in after effects or something for my own videos, i like the way the captions look
you said they made logos with text, was it just ascii art?
yep, it was!
Not only that, they had some Teletext specific characters
Holy cow, that is a creative idea! (also im first!)
ayyyy first!