Possible to capture closed captions using hardware devices?

[gll99]

you not get delay in subtitles? i just try capture .ts and .raw, and i get delay in subtitles.

Usually that's just at the start. After that they line up unless there are video glitches that throw the time out but then the audio is off sync too from the point of problems. The only remedy is to recapture the video but the subs should be ok aside from possibly the start time which might need adjustment.

I don't close ccextractor right away so I can play the ts video with Potplayer loading the srt as external subs. If they are out of sync then I adjust by pressing alt > or alt < until they line up correctly. In the top left of the screen you can see how much adjustment is needed. Then rename the srt (There seems to be an issue in accepting changes by just overwriting the original srt unless you reload the program). In output1 at the bottom set the delay ie... 250 = 1/4 second 500 = 1/2 a second etc... If the subs are late appearing you can set a negative value to make them appear sooner ie... -1000 will make them show 1 second faster. Rerun the program and test them in Potplayer again using the new adjusted srt. If all is fine then mux the files with tsMuxer. You can also make the timing adjustments in tsmuxergui but I prefer to do it right away in ccextractor since I save the srt file in case I need it again possibly to generate another type of sub such as .ass and I might not remember the timing adjustment.

[redwudz]

doncaruana, I changed the thread title slightly to better reflect the broader discussion subject as there seems to be a fair bit of interest in this thread.

Moderator redwudz

[doncaruana]

I am really at a loss here. I just cannot get anything to work. All I ever get is a zero byte file. I've included most of the filters I've tried (with varying combinations). Anyone have any suggestions?

[godai]

you can check properties of analog xbar,

i get some wrong because it was in s -video, i change to composite , in my case.


i see you do different than mine, you don't need mainconcept, line 21 decoder, [if you do like mine]
looks like that one works different [arcsoft] probably you need do trial and error.

gll99 i find my mistake i just see something weird, if you not delete or rename one capture after a new one, they just mix, .ts file, and .raw file,
i get a video with 1080i first seconds and later 720p [i record two channels with 1080i and 720 definition, but because i dont delete or rename graph just add a new part to file, same thing for .raw]

[doncaruana]

Tried using GraphStudioNext and when I load some of the saved ones from GraphStudio it throws errors and says things aren't registered. I just cannot get this to work. I can't get anything captured whether it's CC alone or even with video. I'm content to capture video and use ccextractor if I could get that far. Even tried using virtualdub, no cc included. This seemed like it should be so simple...

[usually_quiet]

Tried using GraphStudioNext and when I load some of the saved ones from GraphStudio it throws errors and says things aren't registered. I just cannot get this to work. I can't get anything captured whether it's CC alone or even with video. I'm content to capture video and use ccextractor if I could get that far. Even tried using virtualdub, no cc included. This seemed like it should be so simple...

Have you configured the properties for the XBar, Capture, and Encoder filters? You need to specify connections, video standard and a few other things.

[doncaruana]

Tried using GraphStudioNext and when I load some of the saved ones from GraphStudio it throws errors and says things aren't registered. I just cannot get this to work. I can't get anything captured whether it's CC alone or even with video. I'm content to capture video and use ccextractor if I could get that far. Even tried using virtualdub, no cc included. This seemed like it should be so simple...

Have you configured the properties for the XBar, Capture, and Encoder filters? You need to specify connections, video standard and a few other things.

I did originally have an issue with the crossbar (default video in was wrong), but fixing that didn't help. I don't remember noticing anything in the capture and encoder filters that needed configuring. I'll have to take a look later this evening.

[doncaruana]

This one might have some promise but everytime I hook anything to the other input on the mpeg encoder, it crashes.

[usually_quiet]

I suspect that the Microsoft MPEG-2 Encoder filter doesn't work with anything other than Microsoft's own software.

Try to find the MPEG-2 Encoder that came with your device, and use it. "ATI" or "AMD" may appear in the name.

[doncaruana]

Well...a little progress...

The output file is the arcsoft filedump filter. It doesnt seem to work with the generic one uploaded here earlier. So, after doing this I finally have something output...and even something that ccextractor will process.

But the srt looks like this and the clip is less than 10 seconds long.

1
00:00:25,892 --> 00:01:22,915
Vy<;rY8hTChmotIO a<
<u>Km9áv5$c5,íH</u>
<u>éeG</u>

2
00:01:31,958 --> 00:02:10,662
<u>Ru#d$6w$] ,->mFJ+ ■8[pBwO/áz0n&6</u>
hzEú-÷
<u>F9j$J4VfÑ:AB>Geyes%P,BaIg5I-,>k6</u>

[doncaruana]

Here's a short clip taken this way. ccextractor seems to *think* something's there...

[gll99]

When you installed the Hauppauge device lets hope it also included a Dshow filter called "Hauppauge VBI Slicer". It may be one answer to your problem



it's not my usual method and I haven't fully tested to see if it caps all the words but it seems to work and the data is not garbled.

EDIT:
I'm pretty sure the VBI Slicer filter installed with Wintv7 which came with my 1512 because vbislicer.ax is in a WinTV7 sub-directory

[gll99]

@doncaruana

Note that the beginning crossbar is not shown for space.

I replicated your graph with a modification. I took out the mpeg encoder. I also added an infinite pin Tee splitter so I could view the cc that was being captured but you won't need it to dump the cc.



The CC data looked fine in the playback window and the file converted ok in ccextractor gui. So this should be another working option for you.

[doncaruana]

Okay - some progress! With this, the video render is perfect. But my ccextractor output is still garbled. No VBI Slicer either. And, what's really weird (to me) is that the video render *only* works when I have the mpeg encoder hooked up as well. Maybe my ccextractor options are screwed up though? I just use defaults except picking mcpoodle's raw.

[gll99]

Okay - some progress! With this, the video render is perfect. But my ccextractor output is still garbled. No VBI Slicer either. And, what's really weird (to me) is that the video render *only* works when I have the mpeg encoder hooked up as well. Maybe my ccextractor options are screwed up though? I just use defaults except picking mcpoodle's raw.


[Attachment 36702 - Click to enlarge]

If you had the vbi slicer it would be listed under the Directshow filters as "Hauppauge VBI Slicer" but wintv7 might have only been distributed with the earlier versions of some of their hardware. I don't know if Hauppauge has it available as a free download.

You'e reverted to the "VBI codec" I'm puzzled as to why you are not using the "Arcsoft VBI codec filter" which was in your previous example. As shown in my last post it worked for me with a simple mod. Did it not work?

You said you had switched to another output file writer filter. Did you go back to the Dump.ax for the cc output file?

This simple graph should work, using the Dump filter, adding the crossbar in front and changing the Capture filter to match your hardware version

[doncaruana]

Okay - some progress! With this, the video render is perfect. But my ccextractor output is still garbled. No VBI Slicer either. And, what's really weird (to me) is that the video render *only* works when I have the mpeg encoder hooked up as well. Maybe my ccextractor options are screwed up though? I just use defaults except picking mcpoodle's raw.


[Attachment 36702 - Click to enlarge]

If you had the vbi slicer it would be listed under the Directshow filters as "Hauppauge VBI Slicer" but wintv7 might have only been distributed with the earlier versions of some of their hardware. I don't know if Hauppauge has it available as a free download.

You'e reverted to the "VBI codec" I'm puzzled as to why you are not using the "Arcsoft VBI codec filter" which was in your previous example. As shown in my last post it worked for me with a simple mod. Did it not work?

You said you had switched to another output file writer filter. Did you go back to the Dump.ax for the cc output file?

I'll have to look at my saved graphs again, but I think the Arcsoft VBI didn't work for me, inexplicably. I duplicated your other graph exactly and it wouldn't work for me. I've moved around the file dump multiple times. I think the one that is working is just dump.ax.

I assume you are just using dump.ax here. Maybe if I just do these 3 components (plus xbar obviously) it will work.

[gll99]

Yes, I always use the dump.ax filter for the raw/bin output file. It's just called "Dump" in the directshow list.

Another option would be to register one of the ksproxy.ax I posted earlier and see if you will have access to the cc decoder under the "wdm streaming vbi codecs"

[gll99]

Another thought is that well written programs will register filters as needed and then un-register them when they close or are done with the filter. It is possible that you may already have the VBI slicer, ksproxy filters or others on your system but they are not registered. If so just make a copy and put them in your graph directory and register them. Keep in mind anything you register should not be moved or the next time you run the graph it won't find it. You could register them in your system directories but they could get overwritten or replaced. I copy the most frequently used ax filters that I use in my graphs to the graphedt.exe directory and register them there but that's me.

The file name of the Hauppauge vbi slicer is hcwvbislicer.ax. Should be an easy search. Remember to copy and not move the file from it's original location if you find it.

[godai]

dump one of graphstudio works for me.

you can try install drivers for hd 600 ati, i dont know if that will show encoder and decoder of ati, but you can give a try.

im able to use them without hd 600 ati connected

[doncaruana]

This is just maddening...I've registered ksproxy and dump from this thread. No help. I've duplicated graphs that work but they don't for me. No vbi slicer either. And I still get no output unless some other file is built - so the simple graph above with just the cc output doesn't do anything.

It's like you guys have done everything but come built it yourselves and I still can't get it to work! I just don't know what it is about my system (or me!) that is doing this wrong.

I guess I'll try the 600 drivers next...

[doncaruana]

SUCCESS!!!! Finally! Don't know if the Arcsoft VBI would work, but I switched to the arcsoft ts filter for the output. I also checked the properties on the MPEG-2 Video encoder and noticed that there is a flag for closed captions. After experimenting a bit, I set it to ATSC format. Ran the ts output file through ccextractor and voila! An actual readable srt file!!

[godai]

hey! good you get it.

i just come to mention, in my case trying with others devices , hauppauge brand, i need plug audio decoder out to analog capture box. if not im not able to get it work,

what i see in your grab you get a video with cc?

[doncaruana]

hey! good you get it.

i just come to mention, in my case trying with others devices , hauppauge brand, i need plug audio decoder out to analog capture box. if not im not able to get it work,

what i see in your grab you get a video with cc?

Glad you see similar behavior - seems that if certain pins aren't active on some of this, it doesn't work at all.

The CC stream is indeed in the video since ccextractor is able to pull it out. I couldn't get VLC to show the CC while playing it, but I know it's there.

[doncaruana]

And a little more here...a tad odd to me - maybe someone can explain...

I get 2 outputs here, both of which will yield viable subtitles using ccextractor. The ones from the ts are slightly delayed (no big deal, just a note).

However, if I so much as remove the output for the mpeg encoder (arcsoft.ts), the output for dumpcc1.bin no longer produces any subtitles