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Deinterlacing ?


Phill_Monks

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That is not de-interlaced....see the lines of movement around the rider?

deinterlacing basically smooth's them out. if you export the footage as AVI raw, download a program called "VirtualDub". Theres a simple button to control it there AND you can control your codec settings easily too (IE wmv, DIVX, MPG, X246 etc etc)

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Well, it's not actually smoothening them out. A normal camera captures 50 fields per second. You need two fields to make up for a single frame. If you number the lines on a DV 4:3 clip (576 which is the vertical resolution), the odd ones will represent the first field, and the even ones will represent the 2nd field. When you have very quick movement in a clip, there will be a difference between what is captured on one field, and what is captured on the other. That's why the video appears to have lines. On a CRT TV, everything we see is interlaced, however, LCD screens can't handle interlaced video too well which is why it needs to be turned into progressive scan for it to be displayed correctly. The process of turning interlaced video into progressive is deinterlacing. It basically merges two fields into one frame.

So, having said that, you need to alter the settings in Premiere for exporting. There should be a box somewhere which says deinterlace video footage. It will either be in the codec settings, or in general export settings. The other way to deinterlace the video is to squash it into half it's vertical size. That eliminates the need of having two fields. If you want to retain the smoothness of interlaced video, deinterlace it and give it 50 frames per second.

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Well, it's not actually smoothening them out. A normal camera captures 50 fields per second. You need two fields to make up for a single frame. If you number the lines on a DV 4:3 clip (576 which is the vertical resolution), the odd ones will represent the first field, and the even ones will represent the 2nd field. When you have very quick movement in a clip, there will be a difference between what is captured on one field, and what is captured on the other. That's why the video appears to have lines. On a CRT TV, everything we see is interlaced, however, LCD screens can't handle interlaced video too well which is why it needs to be turned into progressive scan for it to be displayed correctly. The process of turning interlaced video into progressive is deinterlacing. It basically merges two fields into one frame.

So, having said that, you need to alter the settings in Premiere for exporting. There should be a box somewhere which says deinterlace video footage. It will either be in the codec settings, or in general export settings. The other way to deinterlace the video is to squash it into half it's vertical size. That eliminates the need of having two fields. If you want to retain the smoothness of interlaced video, deinterlace it and give it 50 frames per second.

This guy knows his shit!

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This guy knows his shit!

Yup. He summed it nicely!

From experience, Premiere has a deinterlace option when exporting the video. However, I have found it sometimes crashes my computer. So I will export it, and then use VirtualDub to Deinterlace and encode to XVid.

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Premiere 6.5 is what I used to use. Erm if you right click on clips - video options - field options - tick 'flicker removal' = this will deinterlace the clips, I cant remember/dont know if theres a quicker way round this in 6.5 but this will deinterlace all the clips and when you export you wont have interlacing.

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Premiere 6.5 is what I used to use. Erm if you right click on clips - video options - field options - tick 'flicker removal' = this will deinterlace the clips, I cant remember/dont know if theres a quicker way round this in 6.5 but this will deinterlace all the clips and when you export you wont have interlacing.

I think there was the old deinterlace tickbox in the export settings in premiere, i'm pretty sure there was in premiere 6.0 and i know there is one pro 2.

Just when you go to export the movie look at the video settings and read everything, when you find the deinterlace box just make sure it has a tick/cross in and click the big old export button to start exporting it.

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yeah i understand that, i used to capture footage and it was really good quality like it was already deinterlaced now when i capture my footage its already got the interlaced lines in :S:mellow:

when i capture the raw footage should it have the interlaced lines ?????

phill

Depends if you've told it to deinterlace the clips when you import them or not. I don't know how to change it during import, although i'd imagine it'd be the same sort of thing with the important settings window and a deinterlace checkbox.

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