Close caption & timecode

[Angelo Lorenzo]

In post 23.976 is read as 24fps timecode (I’ll save the history lesson). I digress.

1) Where is this caption file coming from?
2) I assume this caption file was generated from the reference video? Tell me about the format of this reference video. Was the reference video mistakenly exported at a different frame rate? Was the reference video given to a caption company on DVD? The latter would lead me to believe it may have been captioned at 25 or 29.97
3) Where are you seeing the mismatch from video and captions? Before export in your timeline, or afterwards in a video player?
4) Are you exporting 29.97 or 25? 23.976 is not a standardized for DVD. Some NTSC DVD players can take 29.97 material with pulldown and perform reverse pulldown for a progressive frame. I wonder if doing a frame rate conversion at the wrong place in the chain is screwing things up for you.

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Angelo Lorenzo

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[Alexandre Brandt]

Hello Angelo,

Thanks for the reply. So I was able to fix the issue.
It came from the Close Caption file being cut/trimmed at the binning and not starting at 0 time code.

This brings me to three other workflow questions.
For info: frame rate is 23.97 and my video file is AppleProRes (HQ). I’m creating those captions for a DVD. The captions will be sent to the post house authoring the dvd.

1. You mentioned something about the caption file being generated from the reference video. Can you tell me more. I want to verify I’m not doing something wrong. Because the way I created my caption file was by doing New Item – Close caption and then I put that file in a track in the timeline. Something ells that worries me is that when I click on my caption file and I get “properties” it indicates me that the total duration is 00:00:02:23 which is ridiculous because my last caption goes to 00:18:37:09. My I have miss created a caption file ? I followed this tutorial https://tv.adobe.com/watch/learn-premiere-pro-cc/create-closed-captions-within-premiere-pro

2. When I’m done I would like to export the timecode file with starting timecode at 1:00:00:00 because right now my timeline starts at 00:00:00:00. I tried changing the starting time of the timeline to 1 hour start but the Close Captions timecodes start at 0 so I can’t copy an paste me sequence timecode in the caption timecodes for working more quickly.

3. There are two caption standards. CEA 608 and Teletext. It is asked we select which standard when we create the caption file. Can we change that later on ?

Thanks

motion pictures + storytelling = ?
-> FILMMAKING !

Producer | Filmmaker
http://www.alexandrebrandt.com

[Alexandre Brandt]

Oh and an other question I also had was concerning the a close caption text automatically poping off.
Indeed, if I type a text and extend its timecode for a little wile after 15 sec and 15 frames is pops off even if the timecode setting goes further. Is that something inherent to the close caption standard ?

motion pictures + storytelling = ?
-> FILMMAKING !

Producer | Filmmaker
http://www.alexandrebrandt.com