Video playback skips as user, fine as root

The title says it all.
mplayer playbacks video well as root but skips as user.
xine on the other hand skips too much frames both as root and user.
That's regardless of any video driver I use ( vesa or i810)
Tried also "mplayer -xv vo" but video still skips as user.
Note that user is added to video group

Problem solved.
Followed the "Smooth playback" part in this article
http://freshmeat.net/articles/view/747/
Thx to kenneth on #archlinux.
xine is still badly skipping, but mplayer is just fine.

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Video playback skips/stalls

Greetings all.
Bit of a mystery here.
I have a Late 2009 iMac that I occasionally use Win7 on via Boot Camp for gaming.
I have iTunes installed so I can watch Movies/TV Shows from my library (served via iTunes running on 2012 i7 Mac Mini).
When playing any video in Windows 7 with iTunes (SD/HD), it stutters, skips and eventually stalls.
The curious issue is when booted into OS X, I can play the same video in iTunes with no problem.
I have attempted the fix in the KB article related to iTunes/Windows 7 video playback.
http://support.apple.com/kb/TS1718
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OS X 10.8.5
Windows 7 64-bit, SP1
Thanks!

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[Solved] xf86-video-ati low fps under normal user, fine under root

Hi again. someone must had played HL1. So did I, but I had to run it under root to get the sufficient performance. I tried both OpenGL and DirectX drivers.
At 640x480 the FPS is ~5. At 1024x768 it's "1".
after some digging I found that glxinfo produces different output for me and for root:
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OpenGL vendor string: Mesa Project
OpenGL renderer string: Software Rasterizer
# sudo glxinfo
OpenGL vendor string: DRI R300 Project
OpenGL renderer string: Mesa DRI R300 20060815 x86/MMX/SSE2 TCL
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wine-1.1.26
xf86-video-ati 6.12.2
xorg-server 1.6.2
Last edited by leniviy (2009-08-01 11:14:16)

Is your user added to the video group?

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Video Playback Fine On iPhone - Horrible On Computer

Seen others with this issue. But think this is NOT talked about enough, therefore NOT addressed. Hopefully someone can help me ?
Summary: Record video on iPhone, plays back great on iPhone ( A PHONE !!). Get raw footage to a computer, video plays back horribly choppy and audio out of sync (on a COMPUTER !!). Results for me are the same on ALL players on my computer. Others seem to have it play fine with VLC, but not me.
Here's my stats:
iPhone 4, lastest O.S., latest update.
Computer - PowerBook (laptop) G4 17", 1.67Ghz Aluminum Last PPC Edition (Higher Res model), 2 GB Ram, ALL up to date, latest possible O.S., etc..
Players tested with SAME horrible results - Quicktime PRO (default .mov file), VLC, iTunes, WMV, Flip For Mac. ALL latest versions for above computer at least, etc..
I shoot some video (any length) with my iPhone 4 (which has no video camera settings, sooooo...IDK). Video plays back flawless on iPhone.
Plug iPhone into computer, download RAW uncompressed footage to desktop via "Image Capture". From that moment on (if viewing on computer), the raw footage's movie file) video playback acts like computer can't handle its quality, (choppy, skipping lots of frames, timing horribly off, etc..). Reacts same way with ANY player I use. Actually VLC is the worse, it just completely chokes. Quicktime PRO will at least play it, just horribly choppy. ALL players are up to date.
BUT if I burn a video DVD of it using Toast Pro, etc... then play it on convential DVD player and TV, it plays back awesome ! ALSO, if I "export for web" in Quicktime PRO and wait a amazing amount of time, I get a new file (MP4 or something), and that file will play fine on any player in my computer. BUT it is of a low quality, in which is BS that I have to go so low to view it cause I've played other videos downloaded from the net, or various places and they playback fine via QT or ANY player for that matter. Full screen, high res videos too !!
So I ask, what is the issue ? And why has this not been extensively discussed here and why has Apple not at least publically acknowledged this issue and gave its official word ? Is there something I can do ? Why can't the iPhone have camera settings on it to allow me to lower its video quality ? Or more importantly, why can't my computer seem to handle a simple video file that is really NOT true HD (which is 1920x1080) ? Its honestly not even much above TV resolution (720 x something). My computers screen resolution is 1680 x 1050 dpi, and my video card is a ATI Mobility Radeon 9700, AGP 128.
I could be mistaken, but I am almost sure I've downloaded and viewed movies (in file format) via QT that are of a highe res, better quality even and they playback fine. So can I get some clarification on this please ? Whats going on with the iPhones video capture ? Is it out of frame rate ? Or what ?
Thanks for anyones time --

mcsound wrote:
Given the specs of your computer, I would not expect smooth playback of HD video. You definitely lack the processor power and are fairly low on the amount of RAM need to do so.
Hi mcsound, thanks for chiming in to help.
I don't know if I agree with this. Mathematic reasoning just don't support this. I agree consumerism does though - lol.
Playing HD don't take much resources, as my old xBox 360 plays HD movies just fine. But the real point is, 1280 x 720 is not HD, sure its a higher res than standard TV, but not by some overwhelming amount that causes issues like this. I can play other high res videos on this computer just fine, from DVD (which actually should be more taxing on the computer), and also from file (which is literally the same).
The xBox 360 has less processing power and less ram than my old "out of spec" computer, and it plays HD movies just fine. Point to all this is, it just aint adding up. The first inclination I agree, is to go buy a new computer. But, if you do the math, there is no reason why a 1.67Ghz processor can't play HD movies. Cause actually, it can, my computer plays them fine in iMovie, and edits HD video and renders HD video and burns HD video, and real 1920 x 1080 HD video, not this faux HD of 1280 x 720. So see how this is not adding up ?
RAM has nothing to do with this either. Playing movies from file or disc uses almost no ram. But editing film does for sure, and at that, these 2GB of ram I got has edited, rendered and made plenty of HD movies.
Look at the screenshots I supplied, the before and during screens of the "System Memory" (RAM) shows that while playing the faux HD iPhone clip, it used only 100mb of Ram.
So again, no reason to think it is the specs of the computer. I agree it could be the video card, or processor MAYBE, but again, why does other HD clips/movies play on this computer smoothly, while anyone taken from the iPhone doesn't ?
If it is the case that the iPhone is just taking a amazingly high quality of 1280 x 720 (higher than other 1280 x 720 cameras for some other reason), then why in the world would Apple not give the iPhone a camera setting to allow us to pick "capture" setting optimized for the end result application we plan on using ?
Either way, this is not ok, and either way, its funny how it gets most people buying into the whole "consumerism" thing. Which is the last thing we need. Don't get me wrong, I buy things like crazy, and will be buying a couple new computers soon, BUT there is no need for it to play HD or several other things people think. HD is not rocket science, and again, HD is old and was supported even when my computer came out. My screen resolution exceeds the iPhones video clips resolution !
There is some framerate controversy I think, or something that the iPhone is doing that other sources are not. But I just can't find it out, and I find it strange there is not more talk about this.

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ITunes 11 HD video playback slow/choppy/stutter/skipping in OSX

Hi guys,
I'm running iTunes 11.0.1 in OS 10.8.2 on my 2.66 GHzm, 8 GB RAM MacBook Pro and playback in HD (1080p) movies/TV shows in iTunes is slow, choppy, stuttering and skipping. Can't seem to fix it. Any help would be greatly appreciated!
Thanks!

I was having this same problem, and found one cause.
I have an extensive library on a Drobo FS. None of the AppleTV's in the house have any problem streaming full 1080p from it, but my new iMac does. Choppy / laggy video play. Movies and TV shows right from the iTunes store. I can have 3 TV's streaming, and even a 4th laptop, all streaming from the iMac iTunes using the Drobo. They all have zero issues. No lag, no choppy, nothing. iMac has the issue even when nothing else is running. Every time.
BTW, it's happend on my old iMac and the brand new one, both with iTunes 11.
I was told to try setting up a second account on my iMac, and try playing video there. It worked. No problems at all. Weird.
So I started looking at differences between the new account, and my standard. I'd already made sure nothing unusual was running, and no processor hogs (not that anything short of Handbrake at full settings has come close to pegging out the processers on the new box). I found one thing, that made a difference. I had Timemachine backups, going to the same Drobo FS (though a different partition) turned on on the iMac.
Timemachine was running the whole time, and didn't impact any other streaming from the same machine, but it did make iTunes video playback of 1080p movies skip like my 6 year old daughter on the iMac. I turned it off.... no more skipping. I've watched 5 TV shows and 2 movies on that account, and not had another single incident.
Obviously, there is still a problem. The iMac and Drobo have enough bandwidth that they can do all the work at the same time (or I'd be seeing the problem on the other devices while streaming), but they are not playing well together on the same account. I've also checked the throughput to the Drobo FS from the iMac... way more than necessary. If it were a read / write thing on the Drobo, then I'd expect other devices to see the issue when I'm watching something on the iMac that is skipping, but there was still no skipping on any other device at that same time...
But, as I said, I found the root cause in my case. I can turn off Timemachine backups while I'm watching a movie on the iMac, or I can move where I write the Timemachine backups to (going to try this over the weekend to be sure it works). If moving the Timemachine backup to a different drive doesn't work, it's a bigger problem.
I'd really love to see Apple fix this and the issue where I have to turn iTunes on in 32bit mode when using an external library (of it gives the funky quicktime error until you delete and readd the movie).
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I may have a solution for choppy video playback for iTunes Windows users

My setup:
- Intel NUC (i5)
- 8gb memory
- Intel 5000 Graphics with 1GB memory (share of system memeory)
- iTunes 12
- iTunes library on NAS via GigaLan
Had problems with very choppy and freezing HD video playback in iTunes and tried everything... Every other player works fine.
1. downgrade audio playback
2. played with Quicktime settings
However, I think I might have a workaround. You need to do the following,
1. Install Quicktime 7
2. Install iTunes
3. Download ffdshow (Sep 2014 version) and install the codecs: pretty much leaving all do default
4. Set audio quality in Sound and Quicktime options in control panel, and iTunes to 16bit 48k
5. In advanced options of Quicktime in control panel, deselect "Direct 3D" & "Enable directdraw on seondary display", ONLY tick "enable directdraw accerleration"
Well, at least this works for me for now.
HOWEVER!!!
@Apple! You need to address this issue once for all, I can't believe there is no solution. As a paying customer who buy quite a few of your movies in iTunes, I expect to have a harssell free experience. Consumers should NOT have to go through all these troubles trying to fix a product you have released and making billions out of.
Reason why I switched from Android to Apple for my phones and tablets is becasue of the seamless user experience, regretfully I have to admit, this advantage is quickly going away. The amount of glitches in your recent ios updates and itunes are simply unacceptable.

Downloading videos on 7.0.2 hasn't worked as well as everyone had hoped. I still can't get mine to work, but i do know a few people who haven't had trouble with the newer itunes.

How do I stop my itunes video playback from skipping

We just bought a full season of a show and while trying to watch it the video playback is either really slow or it stops and skips while the audio keeps playing. Any suggestions how to fix?

Try:
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Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Unsync/delete all music and resync
To delete all music go to Settings>General>Usage>Storage>Music>Tap edit in upper right and then tap the minus sign by All Music
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
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+ Just wondering if anyone else has this issue?
I'll get choppy or out of sync sound with avi/divx etc (whatever format tv shows are recorded in).
I have only just upgraded the latest firmware and?haven't tried playing any videos again - although the firmware doesn't mention any video fixes....
Its strange - my (slowly dying) Zen Vision: M plays things perfectly but the X-Fi2 just doesn't cope.

/Re: Zen X-Fi2 - Choppys/skipping video playback< Hi,
I was wondering, is the video playback also choppy? Because the X-Fi2 does have some limitations concerning the resolution and the bitrate of the video part of the file. If they are too high it will get choppy or doesn't play at all.
If it is just the sound that is choppy, I would have a look at the audio format. I read (www.formatoz.com) with these settings:?
video: AVI, mpeg-4 (Xvid) , resolution: 640x480 (or lower), bitrate:?768.
audio: mp3, bitrate doesn't really matter.
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Sorry if i've posted in the wrong sub-forum, I will move elsewhere if necessary.
My problem is with online video playback, whether on youtube, vimeo, facebook or myspace, it's always the same problem.
The video, even when fully buffered jolts, or skips, the sounds is usually ok [not for vimeo. The video literally stops and starts every 1-3 seconds repeatedly. This makes watching some videos very irritating and i have no clue to avoid it. I've researched it and found nothing.
I use the latest Firefox [3.0.5], and it doesn't seem to be as bad with Safari

I'm afraid this is the wrong sub-forum, but never mind!
It sounds very much like a line speed problem. Even when "fully buffered", the buffers can empty distressingly fast, leaving your playback hiccuping.
There are three approaches that I know of:
1) Have a go at your ISP/telecoms company, and get them to check the line, the ADSL gear, and the speed of your connection (try also with Speedtest or a similar service).
2) Try resetting/restarting your modem and/or router.
3) If nothing can be done to improve the situation, download your videos before watching them (e.g. using RealPlayer Download Manager, or by ctrl-clicking and choosing Download Linked File.
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Video playback skips as user, fine as root

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