Ubuntu Multimedia :: Use Of Multiple CPUs During 1080p Playback?
Apr 21, 2010
I have a high resolution file (1080p) encoded with H.264 and when I play it back, it lags at certain parts (and enough parts to destroy the job of watching the video).
I don't think that my computer is that crappy and it has been able to play many H.264 encoded files with high resolution - so there is always a possibility that this file is just encoded poorly (lacking a better computer, I cannot test).
For information, I'm running Ubuntu 9.10 64 bit. I have a Intel Core2 Quad CPU Q9550 (@2.83 GHz). I have 8 GB of RAM (forgot the speed off the top of my head). And a Nvidia GeForce GTX 280 (1 GB of memory).
During the playback, the RAM is far from being completely used; however, it seems that one (and only one) of the cores of my CPU becomes saturated at 100% precisely at the moments in which the file lags. When the CPU utilization is below 100%, there is smooth playback.
My question is - is it possible to use all four cores during playback, or is such a process not capable of easy parallel processing.
Another side question is, how can I be sure that my GPU is being used in the decoding process - or is that also being under-utilized?
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May 14, 2011
I can play any video file even 720p but when I am trying to play 1080p video files my video lags.
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Jun 6, 2010
I have a Zotac IONITX-F-E motherboard (Intel Atom Dual Core 1.6 GHz + Nvidia ION) -based box with Ubuntu 10.04 64-bit installed. Do you or does someone you know have the same setup as I do? If so, do they have 1080p video playback working? If so, what driver are they using? I've tried following every guide I could find, but no luck so far. I have libvdpau1 and libvdpau-dev installed. I have the nvidia 195.36.24 driver installed (I used the nvidia installer). I have mplayer installed (which I compiled from source with --enable-vdpau).
I try to run mplayer with this command:
Code:
mplayer -vo vdpau -vc ffh264vdpau path/to/myfile.mkv
I get the following message in my terminal:
Code:
Error opening/initializing the selected video_out (-vo) device.
I have libvdpau-dev and libvdpau1 installed.
After Googling this problem, I found a post that suggested the following steps:
Code:
sudo add-apt-repository ppa:nvidia-vdpau
sudo apt-get update
sudo apt-get install nvidia-glx-195 nvidia-195-modaliases
It turns out that I had already added the nvidia-vdpau repository. However, despite that, I get:
Code:
E: Couldn't find package nvidia-glx-195
The same problem exists for the nvidia-195-modaliases package. Do these packages exist? Is there some other way to get them?
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Aug 31, 2010
I am preparing to purchase a new laptop, with Ubuntu 10.04 built in, from System76 with 8.0 GB DDR3 1333 MHz RAM, ATI 4570 graphics with 512 MB GDDR2 memory, 500 GB 7200 RPM SATA II hard drive, and I get to choose a CPU. I am wondering: 1) Would I get better 1080p video playback performance with a dual core Core i7-620M or quad core Core i7-840QM CPU? 2) What is the best playback software in Ubuntu that takes full advantage of such a CPU, and also the GPU?
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Feb 28, 2011
I'm using bioinformatics programs i run from console on my system or on the server and some of them don't have a option for use multiple cores/cpus.There's a way to force it? some programs have to run for days and use a single core...
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Mar 14, 2011
I am somewhat familiar with SGE (Sun Grid Engine, now Oracle Grid Engine) commands but am having a problem when running parallel jobs.
Present Machine configuration:
machine I - 12 cpus
machine II - 12 cpus
machine III - 12 cpus
.... so on ...
One_machine - 16 cpus
(I have all machine of 12 cpus and 1 machine having 16 cpus)
I want to schedule jobs on these machine such that if I ask for 12 cpus - my jobs should execute on any of the machines which has all 12 free cpus (eg machine I or machine II) in this case.
Eg. suppose I ask for 24 cpus
Option I : 12@machine1 12@machine2 ----- I need this
Options II : 10@machin1 10@machine2 4@machine3 ---- I don't need such a distribution
Hence, Option I is ideal here. Also, when running 12 jobs on machine1 (say) - even if all 12 cpus are not being used at some instance of time, none of the 12 cpus should be freed.
In short, until my run finishes, all blocked cpus should remain blocked.
If you may understand, the purpose here is to run some performance tests.
I'm using 'qrsh' to launch jobs.
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Jun 9, 2011
Is it possible to output one playback stream to multiple devices simultaneously with the current PulseAudio / Phonon setup? The PulseAudio mixer only has radio buttons to choose one device per playback stream. I believe the hardware is capable of this, since I remember doing that before we had PulseAudio. How can I duplicate an audio stream?
Here's one application scenario: I am travelling with my family, all crammed in small hotel room. My wife and me want to watch a movie on my laptop without waking up our kids. I just happen to have one analogue headphone available and one wireless USB headset with me. (Of course, the low tech solution is to bring an 3,5mm Y-cable to attach two analogue headsets, but I would really love to use the USB headset together with the analogue one.)
Another similar thing that bugs me is that my laptop's built-in speakers now always seem dead when an analogue headphone is plugged in. This is mostly what one wants, and before PulseAudio, one had to manually switch them off which was generally annoying. However, the downside is for example with notifications.
For example, before PulseAudio, I could configure Skype to always ring over the laptop's built-in speakers, regardless of whether the analogue headphones were plugged in. This is no longer possible, since PulseAudio does not distinguish between built-in speakers and built-in analogue port any more, while old Alsa did. So in my office, where some analogue headphones are plugged into the docking station, I never hear Skype ringing if I don't wear the headphones.
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Jul 2, 2010
I ended up getting 1080p playback working perfectly with vlc on my 1201n about 2 months ago, but then I decided I'd reformat my system to clean it out a little. There's other tutorials out there, but none are as straightforward as that one. I literally copy and pasted the commands and it worked like magic...now I have the latest nvidia driver installed, but vlc 1.1 won't let me check the GPU acceleration box under Preferences > 'Input and Codecs'.
I remember that this tutorial gave you PPAs for debs of vlc pre-1.1 git files, and a list of all the necessary software to install (vlc, vdpau, smplayer). It was hosted on a site other than ubuntuforums, and it was the only one that worked at the time for me.
Anyone know what I'm talking about, or give similar links? I think with this new nvidia driver stuff is actually being slowed down a bit, but that doesn't explain why VLC won't let me activate GPU acceleration.
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Jun 14, 2010
I use Ubuntu 10.04. I need to play a full HD (1080p) video on my pc:
CPU: AMD Athlon X2 7750 BE
MB: ASUS M3A32-MVP
RAM: 2x1GB KINGSTON 1066MHz
VGA: ASUS 8800GS
I think my PC should be able to play it, but the video is really not fluent. What should be wrong? Power less hardware? Wrong codecs?
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Jul 4, 2010
This forum has been a wonderful treasure of knowledge. I am stuck up with something thats getting onto my nerves. I have installed lucid and followed the perfect desktop guide.
I have a mkv file (4.6Gigs) 1080p HD with DTS 5.1 audio. when I play the file either of the video or audio gets stuck (mostly video) I tried every possible configs from this forum but in vain. Im using Dell LAT D830 with 2GB RAM 2.2GHz CPU NVIDIA Graphics.
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Dec 27, 2010
When I watch a HD movie, the video will freeze momentarily sometimes. Would a 8400GS or 9600GT take care of this?
My video card is a 7300 le,
CPU= Phenom 8450
Memory= 4gb PC2-6400
Power= OCZ Fatal1ty OCZ550FTY 550W
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Apr 30, 2010
I'm having trouble getting 1080p out my xfx 9800gt that has an onboard hdmi socket. No doubt my HDTV is 1080p (panasonic TH-427PZ70B a few years old now), and it will do and has run at 1080p 60hz.
It auto detects the display as simply panasonic-tv and outputs at 1080i. As I've been running mythtv with tv tuners this actually worked quite well as dvb-t is interlaced anyway and most ofthe HD video files I play are 720p. However I would like to run it at 1080p for all the usual reasons- especially as I have some 1080p files I'd like to enjoy in all their glory!!
This doesn't seem to be ubuntu specific as mandriva behaves the same, and makes no difference if I use the open source (default with 9.10), the official nvidia package or as I've just tried 10.04 with default and nvidia.
I've searched around for nvidia hdmi 1080p etc but can't seem to dig up anything useful. Surely I should be able to force the graphics card to output standard 1080p 60hz?
Should I be able to do this through xrandr by setting a modeline or in xorg.conf or nvidia control pannel!?
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Dec 5, 2010
I had a problem playing full HD videos (1080p @ 30 fps), frames dropped, CPU utilisation (on 1 of 2 CPUs) maxed out etc.As I'm still stuck on Hardy I didn't find much stuff that directly answers my question on how to play this... After hunting about a bit the following two links gave me some idea of what needs to be done, namely install a new version of Mplayer that supports VDPAU (NVidia's hardware video acceleration solution).
[URL]
Luckily I had a NVidia video card that supports VDPAU and I had installed the NVidia proprietary drivers before [URL]To check if your NVidia card supports VDPAU please look at the proprietary driver release details.
Quote from Wikipedia:
"Currently only second generation of PureVideo HD bit-stream processor in some of NVIDIA's GeForce 8 series and later graphics cards hardware that has support since the Beta device driver version 180.06.[4] Unsupported hardware from the GeForce 8 series includes the 8800GTS 320/640MB editions and the 8800GTX. Later cards based on the G9x series cores e.g. the 8400GS and the 8800GTS 512mb (G92 core) are supported."
I usually play using VLC but was put-off from trying to upgrade that to CDPAU support because of this little detail from the Ubuntu forum links above:
Quote:
"VLC is available with vdpau by way of VA-API, in this PPA:[URL]However, to install it you'll have to upgrade your precious and very touchy ffmpeg packages. There have been a couple of SONAME upgrades since Karmic's ffmpeg was released, and this will inevitably result in breakage of anything that A) uses dynamic ffmpeg, and B) is not rebuilt against the new version, ie. every package that's on your system that didn't come from that PPA."
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Dec 12, 2010
I've tried watching material in 1080p resolution on my notebook and i experienced some slowdowns, tearing, etc. Video is encoded by x264 and sound is flac 5.1, all in mkv container. I know it's quite heavy one, but it was playing quite good on windows+CoreAVC, so i expect no less from my shiny Ubuntu I did a bit of googling and found out that AVIVO/UVD/Whatever is already turned on by default in fglrx drivers when using Xv, yet CPU is struggling on 90-100% load. Is there a way to turn hardware decoding on? It doesn't seem to work by "default" (or i'm too desperate to acknowledge that hardware acc is already on and still struggling to decode this ).
Specs of my notebook:
Intel Pentium Dual-Core T4200 2.0 GHz
Mobility Radeon HD4570 256MB with fglrx from maverick repo
3GB RAM (doh!)
mplayer and codecs from medibuntu repo
mplayer uses -vo xv -va pulse , ffh264 and ffflac codecs
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Apr 13, 2010
I use two x session, one for xbmc and the other for my desktop, that I can switch with CTRL+ALT+F7 or CTRL+ALT+F8. I start music in xbmc xsession and then switch to my desktop. When the track is finish the next track don't play, i must to come back to xbmc xession and automatically the next track is playing. I would like to have music all time when I'm not in xbmc xsession but in desktop xsession.
Ubuntu 9.10 x86_64 2.6.31-19-generic
ATI Radeon HD 4200 512MB (ATI Catalyst drivers 10.2)
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May 8, 2011
when I'm traying to watch 720p and 1080p movies, MKV format. The movie is breaking all time, do I need to install any codecs or extansions, or use another application.I tried VLC player, and it is same. Well i had same problem with Ubuntu 10.10 and could't fix it.
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Jun 14, 2011
I am using debian squeeze and did an aptitude upgrade yesterday. Today I've found that VLC won't play any video; the files open and the audio plays, but the video is black. The aptitude log is below.
I note that VLC received a security upgrade a few days ago, but my suspicion is that the source of this problem is more likely to be the upgrade of libavcodec52 from version 4:0.5.2.6 -> 5:0.6.1+svn20101128-0.2. I believe this upgrade came from the debian-multimedia stable repo I have enabled.
Does this sound right, and what could I do to fix my VLC playback? This is new territory for me, and I'm slightly surprised that such an upgrade would come from the stable branch of debian-multimedia (although I know this is not an official source).
[Code].....
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Aug 4, 2010
We are working on a project to create a display wall of 8 monitors arranged as 2 high by 4 wide. Each monitor is connected to a single machine and all machines are networked with a master machine with its own, seperate monitor.
Our goal is to get the 8 machines to share a single desktop, with the master machine acting as the server. We have looked at using Xinerama or NMM, but we are unsure about how to get started configuring the multi-machine, multi-head display.
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May 9, 2010
I have followed the instructions in - [URL]. It doesn't seem to read when I put a DVD in. I'm not great at Ubuntu so a few pointers.
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May 31, 2010
Yesterday I fresh installed Ubuntu 10.04 64 bit LTS on my Toshiba Laptop. This is my second time with Ubuntu so bear with me. I got everything working even the webcam but it won't play dvd movies. When I go to the DVD player icon and try to open it...its won't because it doesn't recognize the dvd format.I have searched but only end up trying stuff that didn't work for it. I guess what it needs is Codec's.
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Oct 19, 2010
B4 I had ubuntu i use win7 and use mkv2vob to mux to mpeg for playback on ps3 but what can i use to convert in linux and not with wine
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Dec 1, 2010
I upgraded from Ubuntu 10.04 to 10.10.
I could play a particular DVD in totem without any problems immediately before the upgrade. Immediately after the upgrade I could not play that particular DVD. I got the error message below code...
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Jul 27, 2011
I can play the DVD, but without any voice overs. The music comes in fine, same with the picture. It isn't just VLC. Same problem in Movie Player. Didn't know till just now.
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Sep 1, 2011
Is there a way to do this? I've googled but only found things related to older versions.
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Jan 30, 2010
I recently upgraded my girlfriend laptop to 9.10 and now, for some odd reason, when she plays DVDs on her laptop (the most recent attempt was the latest Harry Potter movie) the movie would play back fine but the colors for everything were way off. I've re-added the medibuntu software sources to her system and applied all available updates but it didn't help.
This problem did not occur on my own computer when attempting to play the exact same DVD.
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Feb 14, 2010
Is there any way to make Ubuntu play sound like Windows 7? I mean when i, for example, listen to music in Windows 7 the sound is much clearer and besides that i can use room correction to obtain a better surround feeling, but when i listen to music in Ubuntu the sound is not very clear and it sounds like stereo even though the sound is played back through all the speakers (the bass is also a little bit to high).
So far i've tried installing the alsa driver and modifying the output levels of each channel, but didn't quite have the same result as the room correction feature in Windows, and the sound wasn't any clearer either. Note: I have an onboard Realtek soundcard and Logitech x530 speakers
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Apr 8, 2010
I've been running into issues with VLC crashing now and again, particularly when seeking through the current item using the bar (as opposed to Ctrl-Right Arrow/Left Arrow); it may have happened in a few other spots, but that's usually when I'm not at my keyboard. All files are stored locally on my HD, mostly .avi video. For the most part, when I'm using VLC, I've got Firefox and maybe a Nautilus window running as well. CPU use, Memory use, and System load stay pretty well down (and I've never managed to get my swap usage above 120MiB of the 1.2GiB on the Swap partition).
I've tried removing and reinstalling VLC, no dice; about screen lists Ver 1.0.2 Goldeneye. A side effect of this is that, until I restart the system, the screen is unable to be put to sleep at it's timeout; in the notification bar of the top panel, an icon appears and (if the mouse is left there) a little box will appear with text as follows:
Session active, not inhibited, screen idle.
If you can see this text, your display server is broken and you should notify your distributor.
Please see [URL] for more information.
The URL there listed doesn't have any information that seems to be useful, but, I'd presume that VLC does something to prevent the screen turning off while it's playing (a situation where most folks aren't going to be typing or mousing around), which is undone when VLC ends cleanly (and re-opening, then exiting doesn't fix it).
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Apr 17, 2010
I have libdvdcss, libdvdread (i think it was called), and restricted extras - i even followed the instructions on the documentation. they still wont play. I run 9.10 64bit on my laptop, and 10.04 on my desktop.
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Aug 8, 2010
On almost each mp3 file I try to play, VLC will "lag" during the first seconds. There may be some screeching noise. It looks like vlc can't keep up with the bitrate, and it "skips" some bits.
This doesn't happen with totem (the default media player).
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Aug 9, 2010
I have tried loading/playing (many different) dvds via VLC / new install of 10.04 (on a laptop through which I had been able to play / burn / rip dvds until I "upgraded")...this is what transpires:
Errors:
Code:
Playback failure:
DVDRead could not open the disc "/dev/sr0".
Your input can't be opened:
VLC is unable to open the MRL 'dvd:///dev/sr0'. Check the log for details.
The log reveals:
Code:
dvdread error: DVDRead cannot open source: /dev/sr0
main error: no access module matched "dvd"
main error: open of `dvd:///dev/sr0' failed: no access module matched "dvd".
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