Ubuntu Multimedia :: Video And Sound Out Of Sync
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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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 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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Dec 2, 2010
I watch alot of news videos and within 1 - 2 minutes the video and audio become out of sync. The video is lagging the audio. I'm using 10.10 32 bit with Shock Flash 10.1 r102 on Firefox. Will the 10.2 beta flash fix this problem?
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Mar 29, 2011
I put all my dvds on my "media center" by converting them to .MP4 with handbrake.
Recently I saw that with a MKV file you could do soft subtitles. I tested a part of a movie, and the audio and video are very out of sync.
With MP4/burned in audio everything is ok...
Edit: Ow yes I'm using XBMC for playing it. MP4 + MKV files are both H.264, they have the exact same settings except for subtitles...
Weirdly Enough: I tried another video and at this one the audio is in sync....
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May 27, 2011
After upgrading to 11.04, video and audio are out of sync by about one second when playing movies in VLC, or opening a clip on the web. Reinstalling does nothing.
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Sep 10, 2015
I have a problem with avconv. Most of the use cases work spledidly, but when I need to crop a segment and then splice multiple segments together, I get problems.
The process I use is this:
1. Raw recording of short segments in high-quality AVI, These are produced by avconv, some as screencast and some by combining a PNG file with flac audio from audacity.
2. Conversion segment by segment into mp4 and ogv
Options A: -acodec aac -strict experimental -ab 128k -ac 2 -vcodec libx264 -s 640x480 -pix_fmt yuv420p -movflags +faststart -crf 22
Options B: -acodec libvorbis -ab 128k -ac 2 -vcodec libtheora -s 640x480 -b 500k
3. Splicing of the segments using MP4Box or oggCat.
(I used to do this in ffmpeg, but I have not figured out how to do it in avconv.)
This works.
In some cases I need to crop the segments, using the copy codecs and the -ss and/or =t options.
If I crop the AVI segments (between 1 and 2) the sound is clipping (this also generates a spree of error messages `Non-monotonous DTS'). If I crop mp4/ogv segments, (between 2 and 3) the remaining video, after the cropped segment are out of sync. I get the same problems with both OGV and MP4 playing them in vlc. Playing the mp4 directly in iceweasel works as it should.
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Aug 9, 2010
I have a couple of .avi clips in which the sound plays 2 seconds before the video, so I need a software that can re-sync the sound correctly with the video with affecting the video/audio quality, what program can I use? What is the name of this feature in video editing programs? I am using Ubuntu 10.04. I noted that the Multimedia & video forum have only threads about problems in playing videos & cards drivers problems.
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Aug 31, 2010
my goal is to record video using a canon powershot camera, edit the avi file on my ubuntu 10.04 computer, then upload the rendered file to videos.
problem is that when i cut the video, the audio is no longer in sync with the video, it's off by about 1-2 seconds. this happens with both openshot and pitivi, so i suspect that it's caused by a bug with the codec. (files are avi with mjpeg codec). after searching launchpad, this is apparently a "known issue". that's great but for now i need a workaround.
i do have an old g4 powerbook with imovie hd v6 on it that i can use, but i'd prefer not to because:
1. the powerpc mac is much slower than my new dual core laptop
2. imovie compresses my videos too much so the rendered file is lower quality
3. i simply prefer openshot to imovie
i was thinking of preprocessing my avi files by converting them to another format with a non-buggy codec on linux. i downloaded ffmpeg, but not sure how to use it and what format to use. would mpeg2 be a safe one to use?
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Jan 23, 2011
I recently purchased a new motherboard and processor to replace an existing system. I transferred the video card. OS remains the same, Ubuntu 10.10 x64. Video worked fine in the first system (eVGA motherboard, Intel E6600 CPU, 4GB RAM), but the old motherboard had a SATA controller issue. New system: Gigabyte GA-890FXA-UD5, AMD Phenom II X4 955 Black Edition Deneb, 8GB RAM
Transferred hardware:
Graphics: eVGA nVidia 8800GT,
Monitor 0: Hanns-G JW199D 1440x900@60Hz
Monitor 1: Gateway FPD1975W 1440x900@60Hz
The Problem:
1. Fresh OS install, everything starts up as expected, login, etc.
2. I use the Additional Drivers link from the menu and select the recommended nVidia driver and enable it.
3. After reboot, the following things happen:
3a. BIOS
3b. Ubuntu startup scripts
3c. Ubuntu logo with spinning dots
3d. Monitor goes black
3e. Monitor notifies it has lost sync
I believe 3d is where I would normally get the login dialog. I can use failsafe mode, but everything I've tried to fix the graphics display hasn't worked. I've even tried to load the latest nVidia driver, nvidia-config, nvidia-settings, etc. There are some options I've tried where the nvidia-x command returns "can't find device". I've tried to modify the xorg.conf file, to no success.
Any ideas what I can do to resolve the error? I'm not that strong on the xorg.conf file, but all I've read is that it's not too necessary anymore. Though, it was modified in my old system to get Twinview working. I've looked through a bunch of log files, but I may not have been looking in the correct log file.
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Jun 20, 2011
I have a sound convertion problem with devede and man devede to create a DVD movie from a video file in opensuse 11.4 32 bit, the sound in the file is mp3, but when I burn the resulting iso the sound is slow out of sync and hard to understand, the video is perfect
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Dec 28, 2010
SOUND from analog Capture is out of sync in Pinnacle Studio 14.
[code]...
This problem can occur during capture from an analog capture card if CPU utilization exceeds 95 percent. To avoid this problem, configure virtual memory to be "System managed" by following these steps:
1. Choose Start -> Control Panel.
2. Open the System control panel.
3. Click the Advanced tab.
4. Click the Advanced tab.
5. In the Virtual memory box, click Change.
6. Select System managed size, and click Set.
7. Click OK.
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Jan 23, 2010
when trying to play songs purchased off of iTunes I don't want to be limited to having to watch them through Virtualbox.how to get vlc or mplayer to play .mp4 videos in Ubuntu 9.10? I've got vlc 1.0 and trying to convert them using ffmpeg didn't work, I keep getting the following error.
swScaler: Unknown format is not supported as input pixel format
Cannot get resampling context
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Mar 15, 2010
I have no problem playing all videos and sound files. I have installed most codecs and propriety software. I can play all downloaded .flv videos from all the sites except one. When I open the .flv file from this site, I get "internal data stream error."
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Apr 12, 2010
My problem is that i have no sound in any video player. The video works perfectly, but with absolutely no sound. I've tried switching output to ALSA, OCC and still no success. My audio files are playing perfect with any music player. In sound setting I'm using Analog stereo duplex, I have the option of choosing HDMI, but than I have no sound whatsoever.
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Sep 26, 2010
I've installed Minitube and all of needed gstreamer and photon plugins.
The program opens, I do a search and then click on a item I can see the gasgauge rolling as if the item is playing but there is no sound no video. And no error messages.
I'm running 1.1.1 maverick and have tied both 1.1 and 1.2 beta, with no avail.
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Feb 3, 2010
This is true for .flv, .avi, .mov, and .mp4, at least. This is true in both vlc and movie player. Thumbnails generated from frames in the videos appear correctly in nautilus. Videos play fine in firefox, on ....., but I downloaded one as an .flv and then it had the same problem. I have restricted extras freshly installed. My "Ubuntu 9.10 - the Karmic Koala" system is fully updated. I've found several other forum posts about the same kind of problem, but I couldn't find anything helpful in them (like that the contrast setting might be WAY out of whack, which it wasn't, or that nvidia drivers needed to be updated or reinstalled, which I don't have anyway, etc).
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Feb 4, 2010
I seem to be having some audio clashes. I use Exaile to play music (if that matters), and after I play music, no sound comes out of videos (not just Ubuntu, it won't work from Yahoo or MSN videos either). Then when I try to go back to playing my music on Exaile, no sound will come out of that. Likewise, if I restart the computer... the sound works again. If I instead watch a video first, there will be sound -- but as soon as I try to play music from Exaile, nothing comes out.
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Apr 10, 2010
My camera takes (QuickTime) videos with abominable sound quality. I've got one that I'd like to improve the sound quality on. What I'd actually like to do is to separate out the audio track, run some filters over the audio track with Sox, and then splice it back in. I'm comfortable doing the sox-based improvements, but have no idea how to get the sound out of the video in the first place or to mix it back in. Perfectly comfortable with winding up with a non-Quicktime video as a result, though.
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Aug 24, 2010
I installed Kubuntu 10.04 and found out that there is no sound for flash in firefox. Also I here no sound when playing local video files (VLC, KMPlayer).
I checked kMix and everything is on. I tried to install pulseaudio, but I am not sure about it. Last time I saw it couldnt connect to some server or what... Although I can hear system sound and Amarok 2 plays mp3. I didnt mention that I tried to install libflashplugin and kubuntu restricted extras.
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Dec 15, 2010
Two month ago I bought Lenovo S-12 (netbook) - [URL] Everything worked great at the beginning. In the last month I have problems listening to music, it stops and continue once a second. I made a video to show how it goes: [URL] This problem happens also in ..... and any other online website.
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Jan 2, 2011
When I play a flash vid (ex. from .....) I have sound but the entire screen is simply white. When I put my mouse where where the "play/pause" button should be I can click there and they work, but its all white. Flash in chrome works just fine, I use regular ubuntu repos. (ubuntu 10.04 32 bit)
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Mar 20, 2011
I just reinstalled yesterday Ubuntu on my second PC, I didn't use 2nd PC for a while so I decided it is time to refresh Ubuntu on it. I installed sopcast to watch some football games. I setup VLC as a main player, so when I past address to sopcast and start bufforing VLC turned on and I was able to watch game, after sec some small windows with error appeared sayin' "VLC probably does not support this sound or video format "wmap"" I closed this windows and noticed there is no sound... I don't know how to fix this problem it never happend before.
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Mar 29, 2011
I recently installed a new evga nVidia GT 430 video card in my Ubuntu 10.10 32-bit system. This had the unforseen side effect of eliminating my sound.
I had no idea that the new video card would include a new sound module. My intent is for my system to use my Soundblaster Audigy2 soundcard in 5.1 output mode. The system still seems to be configured to do that, but the nVidia HDMI Stereo output module seems to have taken over in Sound Preferences.
Here is the output of lspci:
Code:
lspci
00:00.0 Host bridge: Intel Corporation 82915G/P/GV/GL/PL/910GL Memory Controller Hub (rev 04)
00:01.0 PCI bridge: Intel Corporation 82915G/P/GV/GL/PL/910GL PCI Express Root Port (rev 04)
[Code].....
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May 1, 2011
I have a big problem with the flash plugin... Since a couple of weeks ..... and some internet sites with flash content don't work... sounds load and playback correctly but I see a grey square instead of the video.
One weird thing is that ..... videos work perfectly when tagged/embedded in another site, such as facebook or a gmail chat, but on the ..... official site I can't see a thing.
Ubuntu 10.10
Firefox 3.6.16
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Aug 8, 2011
After recent upgrade which contained the newer kernel ( 2.6.35-30-generic). I've started to experience problems with sound and video in programs - deadbeef and totem. Both of them dont play any sounds and video in totem is skipping every 3-4 seconds (the same applies to flash videos in browser).
As I run deadbeef from the command line I dont get any significant information. I run ubuntu 10.10 amd 64. I tried to reinstal gstreamer my programs and codecs with no luck.
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Jul 31, 2010
I am having problems: videos have sound, but no picture.I'm using a Gigabyte motherboard with integrated ATI video, and I've read before that XBMC (and Ubuntu in general) don't like ATI too much. Is there any hope left to make XBMC work?I've tried the following:1. Fresh Ubuntu installation, default ATI drivers. Result: when starting a video, audio is okay, but no video. Also, visibly slow graphics even while navigating XBMC menus
2. Installed ATI/AMD proprietary FGLRX driver via System->Hardware drivers. Result: significantly accelerated menu navigation, but no video still. Note: having no problems watching videos via VLC or Totem Movie Player (after downloading proper codecs)3. Fresh Ubuntu installation, then downloaded and installed ATI's proprietary Linux drivers from ATI's site (ati-driver-installer-10-7-x86.x86_64.run). Result: yippee, I see some video, but wait: no color!! (all videos are in sepia-like mode)
4. Followed these instructions to install the unofficial ATI drivers. Result: total failure, XBMC won't even start, says something about the need to have proper hardware OpenGL acceleration.System info:GIGABYTE GA-MA785GMT-UD2H AM3 AMD 785G mobo with ATI Radeon HD 4200 onboard graphicsAMD Phenom II X2 550 processor4 gigs of DDR3 RAM Ubuntu Lucid 32 bit (2.6.32-24-generic-pae)
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