Momentarily blurry video playback

newconroer · Nov 6, 2012, 06:36 PM

I have noticed several movies/videos tend to be blurry one moment, then clear the next.

For example you're looking at a man's face. While he's speaking and the film is playing, it loses focus,then comes back in, then goes back out. This is not a very fast or pulsating rhythmic effect, rather it's a bit random.

I see this often with .wmv code type *avi or *mpg/mp type files.

Any idea what causes this?

brandonwh64 · Nov 6, 2012, 06:42 PM

Its whatever was used to compress and render the video. Mpeg does this cause It borrows frames from the previous frame until it is been replaced with new frames

Example

newconroer · Nov 6, 2012, 06:44 PM

Appreciate the reply.

Are there any tell-tale signs or things to avoid when choosing one video version over the next?
I'm watching another, it's in the same codec I think, but compressed by a different person and has the same problem.

brandonwh64 · Nov 6, 2012, 06:46 PM

Quote:

Originally Posted by newconroer

Appreciate the reply.

Are there any tell-tale signs or things to avoid when choosing one video version over the next?
I'm watching another, it's in the same codec I think, but compressed by a different person and has the same problem.

If this is a "downloaded" video then its more than likely been compressed from a DVD or Bluray. Only RAW video would be uncompressed.

newconroer · Nov 6, 2012, 06:48 PM

Correct, but this not happen on all videos that are not in native /raw format correct?

I saved a Youtube video of something and it was hard to notice any of this blurring effect. Surely the Youtube video was not in raw format?

brandonwh64 · Nov 6, 2012, 06:51 PM

Quote:

Originally Posted by newconroer

Correct, but this not happen on all videos that are not in native /raw format correct?

I saved a Youtube video of something and it was hard to notice any of this blurring effect. Surely the Youtube video was not in raw format?

Some compressing codecs cut down or use a different method of compression. The link below may shed some light on how it all works

http://www.makeuseof.com/tag/video-c...ies-explained/

newconroer · Nov 6, 2012, 06:53 PM

Quote:

Originally Posted by brandonwh64

Some compressing codecs cut down or use a different method of compression. The link below may shed some light on how it all works

http://www.makeuseof.com/tag/video-c...ies-explained/

Sure thing, will have a refresher with that information.
It's not likely something I can ever avoid I suppose, unless I know for a fact something is raw.
Hopefully when I start doing my own compression I use the right methods.

Nov 6, 2012, 06:36 PM	#1
newconroer Join Date: Jun 2007 Posts: 2,271 (1.04/day) Thanks: 101 Thanked 232 Times in 195 Posts System Specs	Momentarily blurry video playback I have noticed several movies/videos tend to be blurry one moment, then clear the next. For example you're looking at a man's face. While he's speaking and the film is playing, it loses focus,then comes back in, then goes back out. This is not a very fast or pulsating rhythmic effect, rather it's a bit random. I see this often with .wmv code type avi or mpg/mp type files. Any idea what causes this? __________________ Awsome game I wish i could get it but parent are fags and they dont't let me get M games. Maybe if: You didn't call your parents fags You didn't call yourself "hacker" on the internet You learned to spell "awesome" and "assassin" they might think you are mature enough to get the game. -Davidelmo

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Nov 6, 2012, 06:42 PM	#2
brandonwh64 Addicted to Bacon and StarCrunches!!! Join Date: Sep 2009 Location: Chatsworth, GA Posts: 13,664 (9.89/day) Thanks: 2,165 Thanked 5,382 Times in 3,729 Posts System Specs	Its whatever was used to compress and render the video. Mpeg does this cause It borrows frames from the previous frame until it is been replaced with new frames Example __________________ Cruncher's: All GPU's GPU's: 7970 3GB = 8 Threads 5770 1GB OCed = 2 Threads

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Nov 6, 2012, 06:44 PM	#3
newconroer Join Date: Jun 2007 Posts: 2,271 (1.04/day) Thanks: 101 Thanked 232 Times in 195 Posts System Specs	Appreciate the reply. Are there any tell-tale signs or things to avoid when choosing one video version over the next? I'm watching another, it's in the same codec I think, but compressed by a different person and has the same problem. __________________ Awsome game I wish i could get it but parent are fags and they dont't let me get M games. Maybe if: You didn't call your parents fags You didn't call yourself "hacker" on the internet You learned to spell "awesome" and "assassin" they might think you are mature enough to get the game. -Davidelmo

Nov 6, 2012, 06:48 PM	#5
newconroer Join Date: Jun 2007 Posts: 2,271 (1.04/day) Thanks: 101 Thanked 232 Times in 195 Posts System Specs	Correct, but this not happen on all videos that are not in native /raw format correct? I saved a Youtube video of something and it was hard to notice any of this blurring effect. Surely the Youtube video was not in raw format? __________________ Awsome game I wish i could get it but parent are fags and they dont't let me get M games. Maybe if: You didn't call your parents fags You didn't call yourself "hacker" on the internet You learned to spell "awesome" and "assassin" they might think you are mature enough to get the game. -Davidelmo

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