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1. Re: H264 export, 23.972 or 24 fps?
Harm Millaard May 26, 2009 8:51 AM (in response to h2ofun)It depends on your source material and your desired output.
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2. Re: H264 export, 23.972 or 24 fps?
h2ofun May 26, 2009 9:03 AM (in response to Harm Millaard)My source material is HDV normal, not 24p. My output desire is to get the best quality I can. I have encoded all my DV material into ISO dvd projects, and am playing this via my popcornhour set top box. These set top boxes are now starting to add the ability to play BR ISO files. So, I want to make my HDV
into BR projects with menus, but do not want to burn to media, just make into a iso file, so can play either on my computer, or set top box.
I keep looking at the forum searches, and so far, no answers to be found.
Thanks for the help.
Dave
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3. Re: H264 export, 23.972 or 24 fps?
Harm Millaard May 26, 2009 9:06 AM (in response to h2ofun)Since you start out with 29.97 as your source, I suggest you keep it like that and export in 29.97 fps.
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4. Re: H264 export, 23.972 or 24 fps?
h2ofun May 26, 2009 9:21 AM (in response to Harm Millaard)So, this means I do not get progressive output?
Dave
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5. Re: H264 export, 23.972 or 24 fps?
Harm Millaard May 26, 2009 9:26 AM (in response to h2ofun)That depends on your BR player and your TV. But personally I would prefer having the scaler of the TV or BR player handle that than PR.
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6. Re: H264 export, 23.972 or 24 fps?
joshtownsend May 26, 2009 2:31 PM (in response to Harm Millaard)29.97 is progressive I thought. Just like 23.976 is progressive. If it's 59.97 then it's interlaced, right?
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7. Re: H264 export, 23.972 or 24 fps?
Harm Millaard May 26, 2009 3:11 PM (in response to joshtownsend)The framerate, like 24 or 25 or 29.97 or 30 does not say anything about interlaced or progressive, it is the suffix p or i that is telling whether material is progressive or interlaced. In all cases the DVD/BR plays back at the same frame rate, but the fields may be different. There are two fields per frame, so in PAL (25 fps) there are 50 fields, in NTSC (30 fps NDF or 29.97 fps DF) there are 60 fields. If the even and uneven fields are the same, the material is progressive, if they differ, you have interlaced material.
This has always been a confusing matter, especially when you consider the fact that film (shot at 24 fps progressive) is displayed at 48 fps. So film can be construed as interlaced in a manner of speaking.
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8. Re: H264 export, 23.972 or 24 fps?
Jeff Bellune May 26, 2009 5:03 PM (in response to joshtownsend)29.97 can be progressive or interlaced - like 1080i30 or 720p30. Both
run at 29.97 fps. 23.976 is progressive only. 59.94 can be progressive
or interlaced. I have 720p60 AVCHD files that run at 59.94 fps.
-Jeff
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9. Re: H264 export, 23.972 or 24 fps?
joshtownsend May 26, 2009 5:51 PM (in response to Jeff Bellune)Damn interlacing is evil and should be just plain gotten rid of..........
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10. Re: H264 export, 23.972 or 24 fps?
Jeff Bellune May 26, 2009 6:13 PM (in response to joshtownsend)That should only happen when all of my clients have HDTVs and have taken
the last of their NTSC CRT TVs and trashed them. I figure that's 5 - 10
years away.
-Jeff
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11. Re: H264 export, 23.972 or 24 fps?
JSS1138 May 26, 2009 7:24 PM (in response to Harm Millaard)in NTSC (30 fps NDF or 29.97 fps DF) there are 60 fields.
Slight correction. The frame rate in NTSC is always 29.97 fps. Drop Frame and Non Drop Frame refer only to the timecode numbering scheme, and have no effect on playback frame rate.
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12. Re: H264 export, 23.972 or 24 fps?
JSS1138 May 26, 2009 7:35 PM (in response to joshtownsend)29.97 is progressive I thought.
Standard nomenclature is to list the vertical resolution first, followed by the interlaced or progressive designation, then a slash, then the frame rate. So NTSC is 480i/30 (30 is used for convenience, whereas 29.97 is slightly more accurate.) PAL is 576i/25.
You can also have 480p/24, for that film look. But that's unwieldy to say, so people shorten it by removing the resolution, and placing the i/p designation after the frame rate. This give us 24p. Following that same rule, however, normal video is then correctly listed as 30i. Camera makers have taken up the bad habit of incorrectly listing field rate for interlaced material and calling normal video 60i. This is where the confusion comes in.
But the correct designation is to always list frame rate. The i or p are what designate interlaced or progressive. (So 60i actually refers to 60 fps running interlaced, which means 120 fields per second. Since there is no such thing, saying 60i is incorrect and only adds to the confusion.)
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13. Re: H264 export, 23.972 or 24 fps?
joshtownsend May 26, 2009 8:05 PM (in response to JSS1138)Thanks fellas. I had a good idea that's what it was but have been stuck in 24p land so long I get brain farts now and again.




