Video jitters/buffers/severe loss of framerate

I'm out of ideas, I don't know what to do. Whenever I change the duration of a clip (speed it up), the video framerate drops for that clip. It buffers and jitters and just looks awful. Why is it doing this, why can't I just speed up a clip (it's supposed to be a time lapse) without losing quality.
I've tried it on multiple different computers, yet same result. So I delete the clip, reimport it, apply the speed reduction again, same thing happens. Why?

Actually never mind, when I export the file into my final video file (mp4), it is perfectly fine.
However the issue now is that there is no sound in the exported version. But the sound is fine in premiere. I tried audio PCM, Dolby Digital, and MPEG format. Sound didn't work for any of them.

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Why do videos keep buffering and play when I select them?

I am in Florida, and have a comcast business account and get download speeds of 22mbps (as tested).
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We have tried about 6 different routers with apple TV and none of them make the Apple Tv perform without stuttering and buffering. So we decided to use direct hook up.
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Online video playback is severally laggy/choppy on my macbook pro 2011?

hey guys, got a bit of an issue here. I've been noticing some SEVERE lagging issues whilst viewing online (streaming) video, from various sites, including, novamov, youtube, and others. the videos rarely stop to buffer as i have a fast connection, but yet they still seem to lag wildly. what i mean by this, is the sound will continue as normal, the the picture will freeze sometimes for a good 5 seconds or so before resuming, this is happening increasingly more and more..
i am running Mac OSX Lion (latest Update) on my:
MacBook Pro
17-inch, Early 2011
Processor 2.3 GHz Intel Core i7
Memory 8 GB 1333 MHz DDR3
Graphics Intel HD Graphics 3000 512 MB
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If it helps my hard drive space is:
Macintosh HD
Capacity: 664 GB
Available: 179.79 GB
The browser i am using is the latest version of Safari, although i have tried firefox and chrome and i experience the same issue.
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i really can't think of anything else which could be causing an issue here. I haven't installed any additional software for a while, not in the time frame since the error started to occur.
I am quite surprised to be experiencing such issues as lagging on something as simple as a youtube video when my £3000+ computer handles heavy applications such as Final cut pro and Photoshop with ease...
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Hey Carolyn,
Worked a treat, de-jaggy video for first time in months!!! Only point of clarification, I manually deleted the Flash plug-in before I uninstalled Flash. Don't know if this was why it worked for me rather than others but hey ...
Thanks again!
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Carolyn Samit
Re: Online video playback is severally laggy/choppy on my macbook pro 2011?
Apr 26, 2012 5:07 PM (in response to bcusick)
Hi Ben...
I am quite surprised to be experiencing such issues as lagging on something as simple as a youtube video
Try troubleshooting the Flash plugin required for most YouTube video.
Quit all open browsers. I'm using Safari as a test.
Open System Preferences > Flash Player then select the Storage tab. Click: Delete All
Now uninstall the Flash plugin then reinstall new > Troubleshoot Flash Player | Mac OS
Make sure and uninstall the current plugin first.
Then launch Safari. From your Safari menu bar click Safari > Empty Cache
Now try a video.
BTW... if you have the ClickToFlash extension installed, that can prevent Flash based video from streaming. It can also be installed as a plugin in /Library/Internet-Plug-Ins.
And check to see if Safari is running in 32 bit mode. Right or control click the Safari icon in your Applications folder then click Get Info. If the box next to: Open in 32 bit mode is selected, deselect, quit then relaunch Safari.
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Hi I am absolutely going out of my mind and I am hoping someone can assist. I am a frequent visitor to "The Food Network" site and I watch the videos daily. In the last few days the video keeps buffering and is stuck in that mode. I have downloaded adobe flash and shockwave as they suggested from their FAQ section but it still is stuck and continues to say buffering. I really would appreciate any assistance. I am definitely a beginner on MAC and really have limited knowledge in any area.

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Welcome to the forums! You have to go into a sub category to get the post option here is a link http://discussions.apple.com/post!default.jspa?forumID=1215
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Message was edited by: westongallagher

W520 will not play flash videos unless buffered in all browsers (youtube works...)

I just bought my W520 referbished and I cannot watch flash videos unless they are fully buffered. Several places suggests it has something to do with F-secure which does not appeared to be installed. It also only effects certian players - not all. I tried it on a verity of websites and have found that JWPlayer is one of them. Youtube works fine. I have tried reinstalling Flash - I have updated all of my browsers (IE, Firefox [default], and Chrome). Could this be a hardware problem? Something to do with Optimus?
Solved!
Go to Solution.

ajipaul,
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Temporary Fix for the New ATV Video Jitters

I have tested this across 5 different 2010 Apple Units, using a different HD rental on each one, and found that it worked 100% of the time. This is just a temp fix but it will allow you to watch your movies without the jitter issue.
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4. Reboot the ATV (Unplug power then plug back in)
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You may also be able to just rent and not start watching until the buffer fills. Not sure how that works. Point is let the movie buffer completely then reboot your ATV for smooth playback.

So far I have tried and SD movie I had in my iTunes library that was purchased from the iTunes Store, and HD video from my 7D I converted and added to iTunes library and watched several HD trailers from the "In Theaters" section on the ATV. None of them showed jittered after buffer completed. So far for me it has been HD rented content done so directly through the ATV.
Looking for a full movie to test now.
Message was edited by: rz22g

Is there a way to force full video clip buffering before playback begins?

i have 138K download radio link and ALL flash videos on websites that don't download pause every 5 seconds and buffers for 3.... is there a way to buffer the whole thing before playback?
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I noticed how iMovie '11 degrades the quality of any HD Content whether it be a an Imported file or card or camera regardless. And Yes in the Prefrences FULL QUALITY is selected under the video tab. The Exported Content is the same Poor quality under highest settings quality FULL 1080P as imported even if exported a Quicktime X file H264 compression. The bottom line the imported content looks horrible in iMovie '11 it exports horrible too under the highest settings.
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Welcome to iMovie Discussions.
(..Sob!..) If you can bear the anguish and argument and technicalities and angst, Search for "Steve Mullen" and follow any of those threads: you'll find all manner of description about what's happening, what's going wrong, how to correct it, whether it can be corrected ..and so on, and so forth..
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Flash player plays when video fully buffered

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Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
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I've had a BC site for 18 months in which I host video, files the stream through a flash player. Starting a few days ago my videos will not completely download and stop showing buffering that never lets the video continue. If I host the videos at another site they work fine, as I mentioned the videos have been working flawlessly on my BC site for the past 18 months.
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Liam,
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Why does my video keep buffering?

I am trying to watch a video on PBS.org with my MacBook Pro but am unable to because it keeps buffering. What's odd is, I am able to watch the same video on on the same website with my iPhone 4 with no problem. Why is this? Both the phone and the computer are connected via the same wifi network and both have strong signals. To my knowledge, everything on the computer (software, adobe flash) are up to date. This is a MacBook Pro I got a week ago. What is the problem, and how do I fix it?
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You have a slow Internet connection.

Video jitters/buffers/severe loss of framerate

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