Exported video, lines during action

Question

Level 1

13 points

Exported video, lines during action

hey
just having a slight problem...not huge deal but an annoyance...

when i export video (not HD quality) as a quicktime movie and then try and play it in quicktime, during the shots of action, where people are moving aroud alot, there are like lines around the figure that is moving

it is hard to decribe...but i hope you get the picture...

the files i am working with were orginally .vob files and then i used mpeg streamclip to convert them which it did a great job of doing...and i don't get these lines when i play the raw clips in a quicktimes (the converted files i am editing with)

i only get the lines when i try and export the movie once it is edited....am i missing something??

appreciate the help

Thanks
~Will-i-am~

New Imac 20in, Mac OS X (10.4.10)

Posted on Sep 8, 2007 5:53 PM

Reply

Answer 1

Tom Wolsky

Level 10

152,819 points

Sep 8, 2007 5:58 PM in response to nojohnny101

Your material is interlaced. What you're seeing sounds like interlace combing. You can remove it in the QuickTime player using properties. At least I think you can in the standard player. You certainly can in the pro player.

Reply

Answer 2

nojohnny101 Author

Level 1

13 points

Sep 9, 2007 11:02 AM in response to Tom Wolsky

hey
thanks for the reply....i checked into those settings in quicktime and i don't think there is an option like that in the standard version...

upon further inspection though....i noticed that only certain clips have this...not every clip with significant amounts of movement show these lines around the people that are moving...

could this be an error FCE is doing when exporting....or is it a problem with the original video

the reason i don't think it is a problem with the original video is, like i said earlier, when you play the raw footage in quicktime....it's fine....doesn't have the lines

?????

thanks for the help

Thanks
~Will-i-am~

Reply

Answer 3

biggbaby

Level 1

1 points

Sep 9, 2007 12:13 PM in response to nojohnny101

i am having that same problem. i dont no what to do.

Reply

Answer 4

Tom Wolsky

Level 10

152,819 points

Sep 9, 2007 7:27 PM in response to nojohnny101

There's nothing wrong with your video. That's what video looks like. It's made to be seen on a television set. You need to understand how television works. It's made up of interlaced lines, alternately switching off every 60th of a second. If there's motion you'll see interlacing when displayed on a computer screen, because a computer screen isn't an interlaced display. Some applications, iMovie for instance, will suppress the interlacing display. The QuickTime Player can do that as well. The video you shoot with a camcorder is designed to be seen on a television set. It's not really designed for display on a computer screen. If you want to show it on a computer screen, you need to encode so that the interlacing is removed.

Reply

Answer 5

nojohnny101 Author

Level 1

13 points

Sep 10, 2007 11:47 AM in response to Tom Wolsky

hey
ok....i'm planning to ultimately put this on a DVD and then have it show up on a projector...

so as long as that is going to happen....and it looks smooth...then i guess i'm good

thanks for the clarification

Thanks
~Will-i-am~

Reply

Answer 6

WideAge

Level 1

14 points

Sep 11, 2007 12:49 AM in response to nojohnny101

What a coincidence: had EXACTLY the same problem last week! I converted the VOB files to a MP4 files with Handbrake. The MP4 file was fine, no interlacing. After conversion (with deinterlace turned on) to a DV file with Streamclip the fast moving (and lighter / whiter) objects showed a rough kind of interlacing (not the "usual fine stripes"). Not all clips had the artifacts. In FCE this consisted. I did not manage to reduce the interlacing with QTP (usually works fine). So I think it's an artifact caused by the conversion from MP4 to DV. Don't have a solution yet.

Reply

Answer 7

Tom Wolsky

Level 10

152,819 points

Sep 11, 2007 4:18 AM in response to WideAge

Handbrake is the wrong application to use. It is designed to convert DVDs for iPod use. It is a comrpessed and scaled down form of MPEG-4 used primarily for web delivery. Convert that material to DV is having to scale up the material to conform the DV format. Do not use Handbrake if you're going to DV. Use MPEG streamclip directly from the DVD to DV. The interlacing will still be there because both MPEG-2 and DV are interlaced formats. That's the way television works.

Reply

Answer 8

WideAge

Level 1

14 points

Sep 11, 2007 5:33 AM in response to Tom Wolsky

I didn't know that Tom, but I will use Streamclip instead (saves a lot of time too!). Thanks for the advice!!

Reply

Answer 9

WideAge

Level 1

14 points

Sep 13, 2007 10:46 AM in response to Tom Wolsky

Tom,

Used Streamclip (after installing Apple MPEG playback plugin) and the result is a much sharper image and no stripes at all. Great, thanks again!

Reply