Ubuntu Multimedia :: HD Video Playback - Video And Sound Frequently Get Out Of Sync
Oct 17, 2010
When I play large HD videos in mplayer, the video and sound frequently get out of sync, and the video plays a little strangely (occasionally speeding up and occasionally slowing down).
I think it's because mplayer is only running on a single core. As I've got a quad-core processor, it seems inefficient. I've seen that there is theoretically a way to get mplayer to work with multicore setups, but it requires compiling with different options. That'd take me a little while to work through.
Ideally there would be a pre-compiled version in the software centre, or a player which has support built in (again, ideally in the software centre). Is there such a thing available?
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Mar 5, 2010
Have used DeVeDe to make DVD suitable for standalone player in lounge the player plays various formats. the problem is as the title suggests A/V not in sync. It was the first time I had ever attempted to create anything like this. Iam sure I set DeVeDe correctly, the file plays properly on the pc though.
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Jul 13, 2011
In the last week, whenever I play videos, online or offline, the sound and video are out of sync. Usually the sound is a full second behind the videos, but I've noticed it at less.
I just tried watching a video and whenever someone said something, the sound was a full word behind the movement of the mouth.
This never happened until recently. I think there was an update to the sound drivers a couple weeks back, but I'm not too sure.
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Feb 26, 2010
video playback is like I have applied a blueish sepia filter over it. And this is just the playback from totem player or mplayer, and not the playback from ..... (and generally online streaming) - this works just fine. this messy video playback also appears when I use cheese to capture video with my webcam. Note that the preview picture of the video file on nautilus has the natural colours it should have.
at first when I installed the os this particular problem didn't exist, but it came up the time I decided to follow the "comprehensive multimedia guide". So now I have all the pros of following the guide, but this is a major con...
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Apr 11, 2011
I am setting up a MythTV environment to switch from Windows based MediaPortal (with a high number of disturbing bugs). Yet, I have three difficulties, which I want to discuss with you. They are:
- No audio via HDMI see [URL]
- Video resolution seems to change during video playback
- Channels cannot be found via DVB-S [URL]
As you can see, I have created three posts to keep discussions focused.
Alltogether I have the following setup:
- AMD 5050e CPU
- 8 GByte RAM
- Biostar TA890GXE
- Samsung LE40M86BD, connected via HDMI (and only HDMI)
- Mythbuntu 10.10 with proprietary drivers installed
- Technisat Skystar HD2 DVB-S card (two times)
Now, here is the problem:
Whenever I playback any video material using e.g. VLC, the screen resolution changes. This also applies when playback the video in a window and not fullscreen. The problem is that whenever the screen resolution changes, short time later the TV set blanks screen and show the TV set specific information "unsupported video mode".
How can I enforce to stay in the configured video mode?
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Feb 12, 2010
i'm using ubuntu since 8.04, and the current (9.10) is a fresh install on new hdd.the problem was the same each version (8.04, 8.10, 9.04, 9.10) - while i'm playing the video (no matter if i use mplayer [smplayer], gstreamer [totem] or adobe flash plugin [videos]) the playback freezes randomly for about 5-10 sec. during the freeze the movie is still played, i can hear the sound is ok. if i press [space] in smplayer it pauses the playback, so the responses for keyboard actions are ok. not for the mouse clicks however. i can still move the cursor around the screen but it seems the system is not aware of it (clicking on the "pause" button doesnt pause the movie). except the cursor, nothing changes on the screen (if the im [pidgin] window was blinking because of new message, it freezes etc etc).
is there any kind of log i could look into just to try figuring out the problem?it is impossible to watch any movie on my pc (currently i don't have tv)i installed windows on external hdd once and it played videos fine so i suppose it's not hardware problem .
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Jul 9, 2011
Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps, the parameter is the maximum samples per second by which the audio is changed. -async 1 is a special case where only the start of the audio stream is corrected without any later correction.Searching the net makes one believe that this command is just some sort of magic.People just put it in the line and it just works. Isn't that nice?
It says nothing about how to change the TIME the audio starts syncing. Like do I want it to start 5 seconds delayed? Or what about 5 seconds sooner?What if the audio gets more out of sync as the video goes on? Can I slip it a little at a time? What? No magic?No one mentions a file that already has badly synced audio.So what -async 1 really does is simply start the audio at the beginning of the file. LIKE AS IF THAT ISN'T STANDARD PROCEDURE?So what is the exact solution to syncing a messed up video? And why can't it just do the proper "timestamp" sync in the first place?No docs, no info and you are left out in the cold.
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Aug 7, 2010
I just upgraded to 10.04 and now my video and sound is all out of sync and video is choppy. What can i do to fix this?
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Jul 6, 2011
my vlc player suddenly decided to start de-syncing my sound and video. Switching vlc to asla output corrects this, but also makes the player go mute whenever you pause and resume a video. Totem is still working fine, but I really like vlc.
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Jan 15, 2010
I've been running F12 x86_64 for almost a week now without significant issues, until now. I found this annoying problem with the audio system during video playback (both with VLC and with Kaffeine).It happens after a while playing a video: sound just stops (video continues). I found that sound is not dead though (can open Rhythmbox and music sounds).I discovered some system messages in /var/log/messages regarding this (attached).What could be happening
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Dec 12, 2010
No sound on my Fedora when I play stuff on my hard disk. Video plays but there would be no sound. But there is sound/audio when I start using a browser. So I guess flash is working. Any basic trouble shooting stuff for audio? I tried this [URL] but the stuff is way over my head.
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Jun 8, 2010
I set up Ubuntu on an old iBook G4, planning to use it as a front end to my main box. Installed 10.04 no problem, and from there, used Software Center to install MythTV Front end. Have done the same thing on a netbook, no problem.
However, on this PPC Mac, the front end works fine, navigation, menus, etc, until I try to play a recorded programme - the screen is blank, and I just get white noise from the speakers.
(BTW am trying Ubuntu as I don't have a Mac OS new enough to get any of the current Mac MythFrontEnd builds working)
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Aug 30, 2009
I have had some issues since installing Fedora 11 on my desktop (well not after I installed it, once I installed the updates). Anyway sound was cutting out, videos were jumping, speeding up with no sound etc online such as ....., when playing local songs and videos etc. Anyway I followed this guide [URL] and that fixed my playing of online videos, music and when I play local music in totem etc. IN fact there is no issues with sound in those.
However; when I try to play a local video in any medial player it jumps sound, crashes, if it starts playing sound it will cut out and if I move the video forward it cuts out and sometimes crashes the video player. Any ideas why that guide fixed all online video and local MP3 but is till messed up playing local videos?
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Mar 11, 2011
When I play a video in Totem, MPlayer, VLC or whatever, my displayed windows will look transparent in a funny way. Letters are not readable, colours get distorted and images with a black background (colour 0) will display the partial video in it.
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Oct 23, 2010
I'm sorry if this was asked before (i know it was but never worked for me) 2 days ago I installed ubuntu 10.10, my very first linux OS and I immediately fell in love with it.The only problem now, is tearing during video playback (I'm a perfectionist with a thing for fine details, so this is literally killing me)
I have nVidia 9200M GS (HP laptop)
I've set nVidia setting to sync vblank and disabled it in compiz
I've also disabled PowerMizer..
I love the system to give up some vsync issues in moving windows, but i just can't get over video tearing. I'm ready to install anything, change anything, even do a new clean install to get it working. UPDATE: Installed SMPlayer, works fine but drops couple of frames every 5 secs or so (more annoying than tearing lol) is there any specific settings that can fix that?
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Apr 8, 2011
Both MP4 and OGV playback completely weird on my Ubuntu 10.04.2 laptop:
The resolution/length/etc is correct, but the picture is all weird. Webm doesn't work at all.
I tried mplayer, kmplayer, smplayer, gxine, totem and kplayer. All the same.
However, the exact same video's play back normally in HTML5 pages with a bunch of browsers on the same machine. They also play back normally on a Windows machine. There is no DRM involved.
Aren't these gstreamer en mplayer based players supposed to handle this correctly?
This is an Intel Core i3 machine with Intel HD graphics.
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May 18, 2011
i am loving the ubuntu 10.10 interface.my laptop is a toshiba satellite l450 (3gb ram + 2.10ghz amd proc essor. i use a ati radeon hd 3200 graphics card.i have to manually adjust the sound settings if i plug in a headphone or a hdmi cable to suit the necessary output. windows did this automatically.my video quality is very very poor. if i run videos on any browser or watch a movie (avi file) on totem or vlc it is very jumpy and the sound is often out of sync.
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Jan 15, 2010
I have a Dell Latitude CPi that has 400MHz Intel Processor and 256 MB of ram. It has a Neomagic Corporation NM2360 [MagicMedia 256ZX]. I have it set to 16 bit color depth and it is using the neomagic driver. My problem is that it cannot play any video of any size flash, or saved to hard drive. It has a fps so low that I can see it rendering each frame going across the screen. It doesn't seem to have a problem with animated pictures, just actual video files. I don't know whether or not this matters but the card set is known to not support 3d acceleration. I can run any commands in terminal and have a good understanding of the linux environment. This problem has occurred under Ubuntu and Xubuntu and still happens if I use a light weight WM like fluxbox.
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Feb 21, 2010
When trying to playback DVDs in VLC media player, I have to switch the video output driver to get any playback.If I leave it on "Default" (which I think is defaulting to "XVideo Extension Video Output"), I get a solid green or blue screen (which I also get with "Xvideo Extension Video Output")If I switch it to "OpenGL Video Output", I get proper DVD playback but it is kind of pixelated and ugly.If I switch it to "X11 Video Output", I get DVD playback that is very crisp and sharp, the image quality is great.unfortunately, the colors are completely messed up and the blue is completely saturated.I've played with the color settings (especially the Hue setting), but I can't get the colors to look right.
I'd really like to use the x11 video output since the quality is the best, but I can't get the colors right.the first one (Screenshot.png) is OpenGL output, and the second (Screenshot-1.png) is X11 output.It's also worth noting that I am on an IBM ThinkPad R32 with an ATI Mobility Radeon 7000 (or M6, or M6 LE, whatever you wanna call it).I'm running a fully updated 9.04 Jaunty installation.
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Apr 3, 2010
I've installed Ubuntu 9.10 and the prime reason for giving it a go is due to the media center capability with apps such as Moovida and LinuxMce.
Unfortunately during video playback [either divx or flash] there appears to be a random line or lines which flickers on the screen when the video is in fullscreen mode.
I'm using an ATI x1900 video card and have tried using both Tote and VLC, and I have also tried installing the fglrx.
But, both with and without flgrx installed, under the section 'Device' in xorg.conf it says that the driver is 'vesa'.
I don't know how to disable the default ATI driver to enable fglrx, or whether I am going off on completely the wrong tanget and should be looking at something else.
Or is there better support for my type of card in Ubuntu 10 as I don't want to go back to Ubuntu 8 which is the last supported version of the os that ATI developed a driver for my card.
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Apr 26, 2010
I have a 30" LCD with 2560x1600 pixel resolution. I would like to make and play videos at this resolution, but software decode is too slow, and the GPU accelerated decode (VDPAU) maxes out at 2048 pixels. It might be possible to decode 2Kx2K and cut-and-paste and reorganize the rectangles to fill 2560x1600. But someday I plan on getting a 4K screen (4096x2160 pixels) and I would like to support that too. For that it seems two video streams decoded by two GPUs and exactly synchronized would work.
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May 14, 2010
I have two Ubuntus installed. A 10.04 and a 9.04. In 9.04 if I watch a video in Firefox, it works very smoothly and nicely. Using the "top" command, totem-plugin-vi is using the most cpu time at about 16%, and xorg is using about 5%. But in 10.04, totem is using 72% and xorg is using 26%, and it looks really choppy. I think watching DVDs is the same way. I checked "Hardware Drivers" in the System->Administration menu (in 10.04) and it said "No proprietary drivers are in use on this system." I'm guessing maybe I'm using different video drivers on each system, but I don't even know how to check. and here is an excerpt from lspci:
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE]
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May 26, 2010
Im running Xubuntu 9.10 on my compaq v2000 laptop. My problem is that the video stream playback is very choppy. I have tried the method found here [url] but when i get to the part where I have to type "echo base....." when i hit enter my terminal replies with "bash: echo: write error: Invalid argument"...How to fix this choppy video streaming playback...
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Sep 30, 2010
I have an Nvidia 8600 GTS 256 MB installed--
Is there a problem with my video driver? Codecs?
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Jan 2, 2011
after a recent foray into Ubuntu. Every day is a school day at the moment, so please be gentle! I recently obtained an old IBM Thinkpad T41 which I've made dual boot Windows XP and Ubuntu (windows was my backup option - it's installed but with none of the drivers; thankfully I've not yet hit a problem Ubuntu can't handle!) and which is connected up to the TV in our lounge. I have installed XBMC on it, and we're currently enjoying having access to all sorts of multi-media and iPlayer in the lounge. The thinkpad connects to our home network wirelessly, using the Thinkpad's built in wireless hardware - providing a whopping 11Mbps connection. Our media is all stored on NAS on the network, and I thought that even full 54Mbps wireless would not be fast enough to stream videos smoothly onto another machine.
However we have two windows laptops (one windows 7, one windows xp) which have 54Mbps connections and they can stream the videos smoothly from the NAS, so clearly I was wrong (wer'e not talking High def or blue ray rips here or anything). So my first question. Does anyone have an recommendations of a 54Mbps wireless card (PCMCIA preferably) that is compatible with both Ubuntu and the Thinkpad so that I can improve it's connection speed to the network? I have a "Max Value" branded card in the windows xp laptop (bought cheaply from Amazon) that I tried to but failed miserably to get working in the Thinkpad with Ubuntu last night. All hints and tips welcome....
Second question: Improving video playback on the thinkpad. Some of the videos were a bit choppy, which I thought was just to do with video quality. However having been playing them on the windows xp laptop - Sony Vaio PCG-FR215S, so similar in age and processor speed to the thinkpad - they play absolutely perfectly. So what are my options for improving the video playback on the Thinkpad running Ubuntu? - Upgrade memory to 1GB from 512MB? Will this make much difference? The sony has been upgraded to 1GB, which is why I ask the question. Do I have any options on the dedicated graphics processing hardware front? I'm guessing they are severely restricted as it's a laptop, but thought I'd ask as obviously I'd only be interested in something that is supported by Ubuntu.
Nvidia acceleration is enabled in Ubuntu, and in XBMC. The playback quality in XBMC is comparable with using VLC so I don't think there is anything XBMC specific to be concerned with at the moment.
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Feb 10, 2011
I just upgraded to Ubuntu Maverick v 10.10 and loving it. However, I have encountered a problem with playing any type of video whether it be Xvid, AVI, h264, MKV or AAC. I have tried many players from smplayer, mplayer, kmplayer, vlc, etc. but I am still having the problems. I have read some posts on here and I've disabled compiz, tried the X11 tweak and updated my Nvidia drivers. I don't know if I am missing some type of codec or restricted plugin because I have ample space and resources are readily available while playing the video.
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Mar 4, 2011
After working properly for over a year my videos started playing in fast forward. This can be on the internet (as in wwww.wimp.com) or my video clips located on my hard drive.
Also, on a different note my volume control stopped working. My keyboard has a volume control wheel that I used to use to control the volume of music and videos. First it gave out on my side and continued to work on my wife's side and now it doesn't work on ether. (the volume level bar pops up on the screen but doesn't affect the output) (The volume can still be controlled with the mouse though by clicking on the volume bar on whatever web page I am looking at.)
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Apr 29, 2011
i just updated to 11.04 and now my system logs out every time i play a video file.
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May 20, 2011
I recently upgraded from 10.04-11.04 using the 11.04 CD I don't use any effects, I log on the sessions using Ubuntu classic (no effects). Whenever I try to play a video, the gdm restarts and puts me back at the login screen. I installed vlc thinking it might help but no deal.
*edit* I tried all different types of video outputs in vlc, the default seems to work the best, but as soon as I click the vlc window, try to resize it, or access any menu on vlc or try to fullscreen the video gdm crashes and restarts.
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Jan 21, 2010
currently using nvidia accelerated graphics driver (version 185) and a nvidia 8800gt. cpu is an intel c2d e6600, so it's quite a fast pc. video playback is extremely choppy to the point of being unwatchable. it affects all applications that i have tried, such as vlc, movie player and flash videos in mozilla firefox. videos on videos seem slow but playable, but when i try to watch them in full screen there's a drop to about 5fps. cpu usage reaches 100%. scrolling is also slow on large webpages. disabling compiz makes no visible difference.
before i installed nvidia's driver, videos played perfectly. videos play fine in windows xp. it seems as if nvidia's driver is using the cpu to 'process' videos, instead of the graphics card. other than that, ubuntu 9.10 is lightning fast... so what's going on here? i have resolved one issue, that is flash player's performance in firefox. followed instructions [here] and videos is now smooth in full screen. other videos, however, are still stuttering and spiking cpu usage. this must be a widespread issue, but the lack of information on the web shows otherwise.
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