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Old 11-02-2018, 05:02 PM   #1
Fred Dwyer
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Default Compatibility, mp4 files

I am editing in EDIUS, 1920x1080 interlaced files, exporting as an MPEG 2 program stream, using that with Handbrake to produce an mp4 file.

If I make the mp4 file progressive, I find that text scrolling right to left is a little blurry (actually a very slight vibration of each letter) If I make the mp4 interlaced, I get a perfectly smooth scroll. Therefore I prefer to produce interlaced mp4 files.

The question is: Will interlaced mp4 files be as broadly compatible with other platforms as progressive mp4 files are? Is Interlaced vs Progressive a factor in the compatibility question?
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Old 11-09-2018, 11:06 PM   #2
Fred Dwyer
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Well, many have been kind enough to look, but none know or have a strong opinion. I'm going to assume Interlaced/progressive is not a compatibility function. If that gets me into trouble I'll let you know.

One more question: Has anyone found a good way to label thumb drives? I assume a key ring with a tag on it is the logical choice. Anyone found key ring and labels that work particularly well? Other methods?
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Old 11-09-2018, 11:30 PM   #3
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I make all my full HD mp4 in Handbrake tff=1 upper field first and they play smooth as butter on any TV, PC or Mac

I also feed Handbrake with mpeg2 program stream as this gives the fastest workflow, in my case Handbrake processes 200+ frames a second

only smaller web videos at 1280x720 I make progressive
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Old 11-10-2018, 11:55 AM   #4
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I would disagree. I would say make all Mp4s progressive and square pixels. A lot of players understand interlace Mp4 files but some don't and that will produce unpredictable results. Same with non-square pixels.
Interlace ones from interlace timelines will look better but not on every player IMO.
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Old 11-10-2018, 12:28 PM   #5
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interlaced is part of the specs of mp4, it never gave me any issue
of course we use square pixel 1920x1080
25p progressive simply looks wrong on fast motion such as dance
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Old 11-10-2018, 01:35 PM   #6
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Quote:
Originally Posted by antonsvideo View Post
interlaced is part of the specs of mp4, it never gave me any issue
of course we use square pixel 1920x1080
25p progressive simply looks wrong on fast motion such as dance
I'm with you on this one. 25p on dance (or anything that moves fast) is dire - end of.
If I'm doing SD tape conversions I always use interlace. Many customers want to use both a PC and a TV to view. Interlace on the TV will always look better.

I have just done a conference speaker intro. I was supplied with some HD footage 25 and 30p. I did do that as P but if the source had been i I would not have used P. Not found a player that will not play interlaced.
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