Ed Dooley
Forum Replies Created
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Carolin,
Your video looks very wide, not 16×9. Have you stretched it or done something to it while editing?Su video se ve muy amplia, no 16×9. ¿Ha estirado, o hacer algo para que durante la edición?
Ed -
Basically guys, Carolin’s link explains it all:
https://www.mogulus.com/esperanza2009Up and down motion is creating jaggies (more severe than regular interlacing jaggies). Could it be a shutter speed/frame rate issue?
Carolin, what are the camera’s settings? Is it HDV or SD? Is the Frame Rate 24, 25, 30?
What is the shutter speed?
Ed -
Sorry, I still don’t understand the question. Is Spanish your language? Lo siento, pero yo aún no entiendo el problema. Pregunte en español. Tal vez pueda comprender mejor en español.
Ed -
Ola Carolin,
No hablo español muy bien, y entiendo muy poco, pero usted no está explicando el problema lo suficientemente bien como en Inglés. Cuéntanos más.
In English please, what distortion?
Gracias,
Ed[Carolin Fox] “someone can explain to me about distortion in the video
type linesman arranged the focus back but I can not find solution
I appreciate very muc” -
My tip is to do a search of this forum and the Compression Techniques forum. It’s been asked, and answered at least a hundred times.
Ed -
Agreed, pedantic (and different definitions depending on your source). It may be that like Kleenex, wrapper is becoming the generic word. If you Google MP4 wrapper or MPEG-4 wrapper you’ll also find lots and lots of instances of it being used. Granted some of them are people using the term on the COW and other forums, but Sony and many other companies refer to MPEG-4 as a wrapper. Sony describes their EX format as being in an MPEG-4 wrapper for example:
>>>The PMW-EX1 uses an MPEG-4 wrapper to record video unlike XDCAM HD camcorders, such as the PDW-F330 and PDW-F350, that record their data within an MXF (Material eXchange Format) wrapper.<<< Broadcast Engineering calls QT, AVI, MPEG-2 and 4 containers, and OMF, AAF, MXF, and GXF wrappers. The U.S. Government's Library of Congress' digital preservation department calls it a file/format wrapper. Dotwhat.net, the file extension web resource says: >>>>.MP4 (MPEG Audio Layer 4) is a multimedia container format, and is often used to store digital audio/video streams. The MP4 format can hold many different types of data such as audio, video, pictures and even text. As the file is a container/wrapper format, it can potentially store any number of files making it ideal for holding video with subtitles or enhanced podcasts with pictures. <<<< Ed -
The way I understand it, MPEG-4 is also a wrapper, .mp4. You can wrap DivX, Xvid, and 3ivx (probably more) into MPEG-4 part2, and various types of AAC use an MP4 wrapper too. I think wrapper and format are pretty interchangeable (codec, however….)
Ed[Daniel Low] “.MOV is a wrapper and a format, .MP4 is just a format, not a wrapper.
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As Chris said, maybe it’s the pulldown if it’s from film. Maybe look into whether the fields are reversed too.
Ed -
If you compressed them both to H.264 with all the same settings, they should look the same. Are you viewing them both in the same program (QT for example)? They’re just wrappers with different ways of handling meta-data.
Ed -
Are you looking at it on a computer monitor? If so, you’ll see interlacing. View it on a real video monitor.
Ed