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Exporting 10 min long deinterlaced footage – audio glitch
So I checked out the tutorial on how to deinterlace DV footage (https://www.creativecow.net/articles/kramer_andrew/deinterlace/index.html).
The clip that Andrew Kramer deinterlaces is only a few seconds long. He mentions that you can do the same thing to a longer clip and as an example mentions a duration of 30 seconds.
Now the thing is, I have several clips from my gap year in Australia that I’ve been editing together. The footage was shot on DV tapes and is therefore interlaced to all hell. What I tried to do was apply AK’s technique to my 10 minute long clip (one of many) to make the footage cleaner.
The thing is, when the movie was exported the end result was a mess. In my frustration I deleted the movie without much inspection, but I believe both the audio and video were lagging and glitching (I know for certain that the audio was severely messed up).
However, my method for extracting was by going to File>Export>Movie, not by putting it in the render que which user duffbeer911 suggests in this thread: (https://creativecalf.creativecow.net/cgi-bin/new_read_post.cgi?univpostid=873582&forumid=2&postid=873582&pview=t)
“are you going File-> Export? If so…..don’t.
Always add your comps to the render queue, here you have a lot more control over what you are outputting.”
Will this problem be resolved if I simply add the movie to the render que and then export? Or is there another solution? Or maybe it just isn’t possible to deinterlace longer clips (which seems idiotic)?
Thanks for your help. 🙂
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4 Replies
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I’ve not heard of this problem before, but I do know tests I’ve done exporting similar videos via render queue & via export produces a much better result using the render queue.
Have you checked your source video? Is there any chance the DV capture was screwed up? It might be worth checking the video and audio in Premiere (or whatever you used to capture), hopefully you’ll spot changes you need to make, and then export an AAF file to After Effects.
Graham
https://www.quinceweb.com – web design
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https://www.shiveringcactus.bravehost.com – Free FX for amateur films -
The source video wasn’t directly from the DV tape. The 10 min video was what I had already edited in Premiere 6.5. It’s a finished clip that basically just needs deinterlacing to be completely done. As such I’m 100% certain that the source video isn’t glitchy since I’ve worked on the footage for hours (and exported it successfully without glitches). 🙂
A history of what I’ve done:
I edited the raw DV footage in Premiere 6.5 and as a result obtained a 10 minute uncompressed .avi clip. This clip won’t be edited anymore since I’m satisfied with the results, but it’s interlaced, so I imported it into After Effects similarly to how Kramer imported his 5 seconds clip to deinterlace it. Then I ran into problems while trying to export the deinterlaced clip.
So what’s this AAF format and might my problem be solved by exporting the movie from Premiere as an AAF file instead of .avi?
I just realized something that could be the cause of this audio/video glitch. When creating a new composition in After Effects I chose the preset as NTSC, 640 x 480, simply because this was the resolution of my movie. Since the video was imported successfully I didn’t think more of it. However, the footage actually came from a PAL camera. But the footage isn’t even in raw form, so I’m wondering whether that should even matter. In other words, I’m a bit confused as to which preset I should choose, seeing as how none of the PAL settings have 640×480 as a resolution option.
Hopefully this has added more insight into what could be the matter.
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Sorry my bad, AAF is available from Premiere Pro, so no go for Prem 6.5.
NTSC and PAL get confusing, it might well be the source of your troubles. i’ve exported some videos fine in the wrong format, especially when just for PC, but the one time i wanted to actually convert a video of someone, instead of just graphics, the NTSC to PAL first attempt was awful, it completely through out the sync.
If you don’t have to convert the footage, I’d go back to the beginning and try with the PAL presets.
Graham
https://www.quinceweb.com – web design
——–
https://www.shiveringcactus.bravehost.com – Free FX for amateur films -
Eh, I’ve tried lots of stuff now. None of it works, there’s always some problem (bad audio, no audio, etc), but the file size goes up from 400MB to 4GB, so I don’t think I’ll do this with a 2GB file.
Thanks for your help though!
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