Jerky video when window has focus

I am new to the Mac world and everything is good except for jerky video playback.
When watching video I find that if the window playing the video has focus then the video is jerky but if another window has focus the video playback in the window with the video is smooth. This is certainly the case for watching Youtube (safari or firefox) and iTunes video clips.
Do others have this problem

I tried what you are describing and observed no fuzziness of the video. I had two applications open at the time and switched from one to the other. It just might be the video.

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[SOLVED] stay fullscreen in flash videos when window loses focus

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Figured it out. I tried doing the same in Gnome, which had the same problem. Searching for linux more in general lead me to http://www.buttonhome.org/articles/23-l … itor-linux where they suggested going into libflashplugin.so and manually changing _NET_ACTIVE_WINDOW to something like __ET_ACTIVE_WINDOW, which did the trick.

Jerky video when uncompressed

Ok... I'm going to be a bit long winded here so everyone knows the situation exactly.
I use a FCP box at work editting local news promos. I work in DV.... haven't had any problems...
My boss was nice enough to buy me a new system so I can work uncompressed and such. Here is the run down of what I have....
4x2.5 GHz PowerPC G5
MacOSX 10.4.6
4.5 GB DDR2 SDRAM
Final Cut Pro version 5.0.4
AJA Kona LH
Sequence Preset: AJA Kona LH: 525 29.97 10bit
Capture Preset: AJA Kona LH: 525 29.97 10bit
Device Control Preset: AJA Kona LH NTSC Sony VTR
Video Playback: AJA Kona 525i29.97 10bit (720x486)
Audio Playback: AJA Kona
Deck: Sony DNW-A75 Betacam SX
Storage: Apple XServe Raid with 1Terabyte over 4 drives.
Video comes from the deck to the AJA Kona through an SDI line.
I do not know much of how the Raid is setup since some dude came and did it for us.... it doesnt work like I had intended it to.
We have the FCP running DV quality, an After Effects box, and the Uncompressed quad FCP all three hooked up to it.
My idea had been that this way all three could access the same information. However, when the guy set it up for us... he said he partitioned it four ways. Each computer gets one partition with the uncompressed FCP box getting a second. From any of those boxes I cannot access the other box's partitions... clearly this defeats the purpose of the system....
Anyway, I have found that when I digitize video on my new uncompressed system.... after about 15 seconds it starts to get jerky. The video will freeze while the audio continues to play. Usually it will do this for maybe 15 frames and then play again for maybe 8 then do it again a couple of times. It also reports timecode breaks repeatedly when I know for a fact there are no breaks on the tape.
To trouble shoot this I changed my capture setting to 8 bit uncompressed. The problem persisted. However, when I changed it over to DV compression, the problem went away and there were no timecode breaks.
If anyone has suggestions I would greatly appreciate them and I might bake you brownies. haha!
If you want my 100% speculative guess... I think that perhaps when dude partitioned the Raid, he gave each computer a single drive on the array. This way the information being written is no longer being split four ways for faster read and write times but is simply being written by one drive, the drive can't keep up with the uncompressed video and thus I get lag. However, seeing as I didn't set that up, I don't know if that is the case or if that is even possible. I don't have much experience at the hardware end of things!
Help me!!
Kip Gordon
Memphis, TN
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Okay Patrick, here's the latest in my jerky video saga...
I ran the test with these settings:
Test: Disk Read/Write
Disk: Host1Media1 (XServe Partition)
File Size: 4.0 GB
Frame Size: 720x486 10-bit
File System Cache: Disabled
Simultaneous KNOA DMA: On (I'm not sure what this is but I clicked it)
The average write speed was about 100MB/second
The average read speed was about 110MB/second
I noticed though that at frame 385 it was writing 192.2MB/s and then for frame 386 it dropped to 0.4MB/s, frame 387 was 1.8MB/s and then 388 was back to 120.0MB/s. This occured again around frame 3400.
I asked the IT guy here at work and he said that sort of behavior is normal for a drive system and shouldn't cause this problem.
I also tried some more experiments today. I tried setting my capture scratch to the internal media drive and had no problems digitizing 10bit uncompressed. The problem seems to only be with the XServe. We called the guy who installed it for us and he said to reboot it and if that didnt work to reformat the drives. Basically, I have no faith in the guy. When he installed the thing he didn't seem to have a clue what he was doing. Go figure.
Anyway, based on what I've seen I've come to the conclusion that the problem is not with the KONA card (it plays the video fine, its just when we digitize), FCP, or the computer but is instead with the XServe.
I don't have much experience with this stuff but, it all seems to point in that direction to me.
I'm not an idiot am I? The XServe is meant to be used for this sort of thing, right? I hope we didn't just buy the wrong thing alltogether as well, that would suck just a bit! :/
Once again, any more suggestions would rock as I'm at a loss as to what would cause this. Perhaps I should post in the XServe forum?
Kip
btw, I've tried to supply as much info as possible whenever possible, seeing as I've read so often comments such as "what version are you using? What deck? ****, what computer?!" If anything pertinent is missing please let me know!

[MSI RS480M2-IL] jerky video when playing mpeg2

My new msi rs480m2-il mainboard with venice 3000+ cpu and 512 mb twinmos ram shows problems when playing mpeg2 content. When playing recorded mpeg2 file the video is jerky (I already checked the video source, but it is random)
After first install of windows mce I found out the image was jerky and flashed the bios from 3.3 to 3.8 to see if it improves some things. The only improvement was that the CPU was recognised and that I could enable C&Q.
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Quote
Realtek A3.74 drivers from realtek website
There are a few threads in the Forum on problems with the more current Realtek driver sets and the board, e.g. poping and stuttering. It's always possible that the video playback is affected by audio. The set on the MSI CD that came with the board is good.
I tested newer and also encountered problems. I tested several of the Catalyst IGP sets without problems, but recommend you try the Realtek set on the CD. Make sure you uninstall the current set before you move back.
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Text selected when InputField has focus

Hi,
I have a Table, which on press enter jump from one InputField to another.
How I could do to when the InputField gets focused, the text inside (a zero, because its an initialized integer) were selected and ready to write?
With this I would like to avoid that user has to delete the zero to write the number he/she wants.
Thanks!

Hi
Try
Requests to change the keyboard input focus to this view element.
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    If this view element is a table cell editor, its occurence in the current
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TP4 - SEVERE: Can't register active data when window has no name

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I'm getting this message in OC4J console every time PPR is used in a page. It is coming from oracle.adfinternal.view.faces.activedata.SessionDataUpdateManager __getPageDataUpdateManager
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Windows 7 x64 - Encode h.264 results in jerky video in WMP 12

Windows 7 x64 - Encode h.264 results in jerky video in Windows Media Player (WMP) 12
System: Windows 7 Ultimate x64 EN, Adobe Master Collection CS 4 Win En
Please download the sample file here:
http://www.tsxn.com/storage/transfer/Serenity.zip
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Profile: 1280x720 fps 30, square pixel, progressive
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At least in case b) Adobe would have to look into this.
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Chris

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I just need to determine which window within Windows has focus.No, you don't. All you need to determine is whether your application has the focus. If it doesn't, then some other application does, but it's really irrelevant which one does. All that's relevant is that your application doesn't have the focus and hence it should pause.

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How to determine which application has focus in Windows

Hello all-
I'm trying to work around the "Labview freezes when there is large data on the clipboard known issue" (http://forums.ni.com/t5/LabVIEW/Labview-freeze-when-accessing-a-custom-menu-with-data-on-the/m-p/200...) and one thought is to try to determine if Labview has focus, and if it does then clear the clipboard. If Labview doesn't have focus, then let the user use the clipboard. This would be a good work-around because it would let the users paste screen shots and such into notes files and wouldn't risk a nasty clipboard/ menu/ freeze-crash.
My initial search for determining windows application focus, came up empty though. This old thread (from 2005) pretty much covers it:
http://forums.ni.com/t5/LabVIEW/Is-there-a-simple-way-to-programatically-tell-which-VI-window/m-p/20...
The "Is Frontmost' property does not do it. I need to determine if Labview has focus, as opposed to Windows, notepad, firefox, etc. I also reviewed the commad prompt commands and didn't find anything immediately helpful there either.
Any ideas?
Thanks,
Casey
Solved!
Go to Solution.

Christian-
That's perfect! By using GetForegroundWindow, GetWindowTextA and GetWindowFileNameA in user32.dll I can detect which window has focus. If Labview has focus then I programatically clear the clipboard so the user can still use it when not clicking on Labview windowns, but also we do not risk a freeze and crash because of the clipboard/ freeze bug.
I briefly thought about using the .NET versions of these functions, but because that would have forced an upgrade to at least .NET framework 3.0 for all of my user computers, I decided on the unmanaged user32.dll.
Thanks for the suggestion. I think I'm pretty close to a work around here that should last me until they fix the clipboard/ freeze bug.
Thanks,
Casey

Key Navigation when window doesn't have focus

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You can use the keyboard input VIs to continuously poll for that key combination. Not as good as an event, but will work without focus. The VIs can be found in the Advanced palette before 8.0 and in the Connectivity palette (I think) later.
Try to take over the world!

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My FCE is version 1.0.1. Anyone got the anwser I looking for????

Not flickering. It's like a moving window or a bounce in the video. Kinda like someone bumped my tripod - However, it does the same thing with photos.

Outlook 2011 on macbook pro won't get mail unless it has focus

I have Microsoft Office 2013 on my Macbook Pro 15" retina. Outlook works fine for email when outlook has focus. If outlook is in the background, for example when I have Safari open as I do typing this question, Outlook cannot make a connection to my ISP and get mail. It displays a popup window for each mail account asking me if I want to try giving it the password again. If I say No to each popup and leave Outlook on top with focus, it immediately reconnects to the ISP and resynchronises all mailboxes, it just won't keep synchronised when it is in the background.
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TS1362 my iTunes wont play music or videos when i open it it comes up with "iTunes has detected a problem with your audio with your configuration AudioVideo playback may not operate properly"

my iTunes wont play music or videos when i open it it comes up with "iTunes has detected a problem with your audio with your configuration AudioVideo playback may not operate properly" i have uninstalled it and reinstalled it twice and it stil lcomes up with that message every time I opentheiTunes icon I dont knowwhat to do

Hello Wade,
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"iTunes cannot run because it has detected a problem with your audio configuration"
Resolution
QuickTime may need to be reinstalled. Follow the steps below to uninstall QuickTime and then download and install QuickTime using the QuickTime standalone Installer.
On the Start menu, click Control Panel.
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Windows XP and Windows 2000: Open the Add or Remove Programs control panel and selectQuickTime in the list of currently installed programs.
Windows Vista and Windows 7: Click Uninstall a program (or if using Windows Vista's Classic View of the Control Panel, click Programs and Features) and select QuickTime in the list of currently installed programs.
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iTunes for Windows: iTunes cannot run because it detects an issue with QuickTime
http://support.apple.com/kb/TS1371
Cheers,
Allen

Jerky video when window has focus

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