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H264 Closed Captioning

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William Stewart
H264 Closed Captioning
on Aug 8, 2011 at 3:40:34 pm

My Technical Question for Monday, Closed Captioning is the subject. I have captured a live stream with CC embedded in it to ProRes 422, No problems there. I need to trans code it to H264 and keep the CC intact. Every time I try I lose the CC. Anyone know any tricks or something I am missing?


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André Engelhardt
Re: H264 Closed Captioning
on Aug 8, 2011 at 6:20:52 pm

I'm not an expert on CC but from what I gather the CC is embedded in the .mov container. What are you using to export the ProRes to H.264? Also what container for the H.264? .mov? mp4?

.mp4 afaik does not support additional streams such as CC.

Might need some more information from you to figure out on where from and where to you're trying to go. Codec is one thing, wrapper another and then the software involved matters too!

--
Audio Engineer, Sound Designer
Video- and Photographer
http://www.andreengelhardt.net


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William Stewart
Re: H264 Closed Captioning
on Aug 8, 2011 at 6:39:02 pm

I have tried Quicktimepro, compressor and Telestreams Episode
it is in the mov wrapper

I am capturing it in FCP7 using Log and Capture in prores 422 and it get's the CC no problem But I need the file to be in H264.
I am working with a company to upload complete TV shows for broadcast and they have to have CC.


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Rafael Amador
Re: H264 Closed Captioning
on Aug 8, 2011 at 7:16:59 pm

Hi Williams,
Open the Prores file in QT and have a look to the Properties (Cmd-J).
Do you see there a "Closed Captions Track"?
rafael

http://www.nagavideo.com


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William Stewart
Re: H264 Closed Captioning
on Aug 8, 2011 at 7:37:14 pm

Why Yes I do!


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Rafael Amador
Re: H264 Closed Captioning
on Aug 8, 2011 at 8:22:32 pm

[William Stewart] "Why Yes I do!"
That's very good.
FC can not manage that kind of tracks; only A/V and TC.
But you can fix it with just QT.
- Open the Prores file in QT.

- Open Properties (Cmd-J)
- Extract CC Track.
- Click the CC Track window and "Select All" + "Copy".

- Open the H264file.
- "Add to Movie".
This will embed the CC Track from one file to the other.
Works for video, audio and TC tracks.
Should work with the CC Track.
rafael

http://www.nagavideo.com


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Mark Suszko
Re: H264 Closed Captioning
on Aug 8, 2011 at 9:37:37 pm

I learned something very useful today, and I thank you very much for this tip!


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Rafael Amador
Re: H264 Closed Captioning
on Aug 9, 2011 at 9:42:29 pm

[Mark Suszko] "I learned something very useful today, and I thank you very much for this tip!
"

I've learnt much more from you in the COW, the last few years :-)
rafael

http://www.nagavideo.com


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William Stewart
Re: H264 Closed Captioning
on Aug 9, 2011 at 4:30:26 pm

Fantastic!!!! Thank You!!!

works like a charm. I cannot say enough of how much this has helped me!


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Rafael Amador
Re: H264 Closed Captioning
on Aug 9, 2011 at 6:16:35 pm

QT Pro is a gem, but all those option "will be lost in QTX, like tears...in rain ...".
I hope they add those basic functions soon.
rafael

http://www.nagavideo.com


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Albert OConnor
Re: H264 Closed Captioning
on May 18, 2012 at 5:45:37 pm

Rafael, thanks for your response to William Stewart, it helped me a lot.
The question I have is that once I extract the Closed Caption track from a Quicktime video file, besides copying and add it to another Quicktime file, how do I go about repurposing the Closed Caption track so it can be used in DVD Studio Pro 4? I realize DVDSP can only created CC'd videos if I supply it a separate .scc or .cc file, but can this extracted Closed Caption track be converted so it can be used in DVDSP?

Thanks in advance.

Albert


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mat cav
Re: H264 Closed Captioning
on Sep 24, 2013 at 7:54:42 pm

I just have an HD .mov with closed captions.. I just need to extract the CC to an SCC file or something I can convert to an .SCC

I cannot figure this out in quicktime pro
I can see the CC in the properties, hit extract, opens a new movie, I can save that as a new name but it is still a .mov..

Any help would rock


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Becky Landholt
Re: H264 Closed Captioning
on Sep 25, 2015 at 8:02:33 pm

Did anyone ever answer this question? I'm having the same issue. I have a prores close caption .mov and need to make a .mp4 (h264) with embedded closed caption. I extracted the closed caption file and added it to my mp4 file but when I go to save it, it forces a self-contained quicktime. Any ideas?

Thanks!


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