[00:26] whats the difference between low latency and realtime kernel? which would be better to pick for audio/video editing? should I choose both? [00:27] robertzaccour: what OS are you using? [00:27] 10.04? [00:27] 10.10? [00:27] robertzaccour: https://help.ubuntu.com/community/UbuntuStudio/RealTimeKernel [00:27] i usually suggest using the -generic one [00:27] holstein, Ubuntu [00:27] and *if* you need lower latency [00:27] move on to the -lowlatency [00:27] and if thats not working for your needs for some reason [00:28] try the -realtime one [00:28] robertzaccour: what version of ubuntu [00:28] the generic kernel is getting better and better [00:28] holstein 10.10 64 bit [00:28] each release :) [00:28] IF you're not doing real time effects processing [00:29] OR using a software synthesizer live [00:29] would realtime kernel be best overall? [00:29] you wont really take advantage of what a lower latency kernel will provide [00:29] in the past i've had audio/video sync issues and a bit of lag [00:29] robertzaccour: generic would be best overall [00:29] for your machine in general [00:29] holstein, generic seems to be a problem from my experience [00:30] Consider the realtime kernel experiemental, and should only be used if nothing else works [00:30] robertzaccour: where is the 'lag' ? [00:30] holstein, a little bit in video screen capture with webcam open, especially with normal effects on [00:30] right [00:30] robertzaccour: that shouldnt matter [00:30] holstein, i just need to know which kernel would most likely fix my problem here [00:30] you'll fire up whatever you want to use [00:31] and it will create a file [00:31] with audio and video [00:31] but which kernel will most likely fix my sync issues here? [00:31] and if it takes 2ms to grab that data and write it [00:31] realtime? low-latency? [00:31] you wont know the difference [00:31] between 2 and 60ms [00:31] robertzaccour: i would say the proper software will fix the sync [00:31] robertzaccour: What program are you using? Do you know what is causing the sync issues? [00:31] not the kernel [00:32] robertzaccour: are you using JACK ? [00:32] ailo, I have cheese open while using gtk-recordMyDesktop [00:32] holstein, never used jack [00:32] yeah, chees is not going to do it [00:32] cheese is for kids i think [00:32] not for what you're looking for [00:32] holstein, would one of these kernels possibly fix it? [00:32] nope [00:33] holstein, so no chance [00:33] feel free to test it [00:33] but, if you think you need lower latency [00:33] you should be using JACK [00:33] to fully utilize that [00:33] what does jack do? [00:33] quite a bit [00:34] allows interconnectivity for one thing [00:34] robertzaccour: let me give you a scenario [00:34] i have a stereo audio track [00:34] and i want to add a track to it [00:35] the musician is listening along to the stereo track [00:35] and playing along [00:35] the time it takes the computer to create that sound [00:35] lets say [00:35] that 20ms [00:35] THEN the time it takes the computer to record the new audio [00:35] thats going to be 20ms as well [00:35] my issue is when recording my desktop with cheese and audio recorded after about 4 minuts the audio and video go out of sync and it gets worse the longer the recording [00:35] thats means the new audio COULD be 20ms later [00:36] or 40ms later [00:36] this will happen immediately [00:36] and not after 4 minutes [00:36] you dont have latency issues [00:36] you have cheese issues [00:36] record my desktop is JACK capable [00:36] holstein, so what do you recommend? [00:36] and VLC is the tool to use for the cam [00:37] holstein, so you recommend vlc instead of cheese? [00:37] even using VLC for your needs now might work [00:37] so cheese is the problem? [00:37] its an issue of frame rates too i think [00:37] robertzaccour: well, im speculating [00:37] 30fps [00:37] but cheese is not a professional tool [00:37] thanks i will try vlc [00:37] doesnt claim to be [00:38] seems almost all the buntu users use cheese though haha [00:38] you can mess around with the rates at which the audio and video are 'grabbed' [00:38] holstein, whats a "professional" webcam application? anything of logitech software quality? [00:38] in theory [00:38] robertzaccour: Doesn't seem like you need lower latency anyway, so I would stick to the -generic kernel. [00:38] the video writes a little more or less data [00:38] and they get out of sync [00:38] May be that -lowlatency can be more reliable. [00:39] But -lowlatency will not fix sync issues. [00:39] oh ok [00:39] im not sure about 'logitech software' [00:39] i might look into vitrualdub [00:39] pitivi [00:39] one of the big video programs in linux [00:39] pitivi opens the webcams too? [00:40] * holstein shrugs [00:40] VLC does [00:41] i used to have sync issues when i was trying to copy some things from VHS to DVD [00:41] back on windows [00:41] virtualdub is what i ended up using [00:42] stayed in sync better [00:42] not sure why [00:42] when i was googling around back then [00:42] i found this to be a common problem [00:43] i read that major networks pay to have things synced up afterwards [00:43] in a lot of cases [00:43] what did you do with virtualdub? [00:43] and i have seen out of sync [00:43] on TV [00:43] oh ok [00:43] robertzaccour: i grabbed some VHS's [00:43] with vitualdub [00:44] virtualdub* [00:45] i see [00:45] test what you want kernel-wise [00:45] besides vlc what else is good for webcam display? [00:45] but thats not the issue [00:45] im not sure [00:46] i mostly focus on audio [00:46] and not guvcview thats worse than cheese haha [00:47] you can try cheese and mess around with the frame rates [00:47] and the bit rates of the audio [00:47] fiddly though [00:49] whoa holy crap my screencasting is crippled with normal compiz on [00:50] i bet [00:50] in windows screencasting was perfect, full aero and all [00:50] ive been fine with recordmydesktop-gtk [00:50] and canonical is basing their next UI on compiz what a joke imo lol [00:51] nope [00:51] holstein, with compiz on? [00:51] its unity [00:51] i know [00:51] unity is built on compiz right? [00:51] with a 2d version now [00:51] but there's also 2D unity [00:51] yeah [00:51] i think that was a good call [00:51] if i use untiy it will be 2d [00:51] they're not doin the 3d unity? good whew [00:51] i dont remember if i had compiz on or not [00:52] with recordmydesktop [00:52] i dont remember it being an issue [00:52] so it was probably on [00:52] you can always dual boot [00:53] or run one or the other in virtualbox [00:53] although, the pro audio software really doesnt work well in VM [00:58] i'm recording with vlc open instead of cheese now [00:58] not much luck with cheese and guvcview [01:03] I'm gonna install Xubuntu because Xfce themes better than Gnome from my experience [01:04] would prefer gnome if it weren't for compiz issues with screen capturing [01:04] just install XFCE [01:04] I wonder if using compositor in Xfce will mess stuff up [01:04] should [01:04] probably more relating to your graphics card/drivers [01:04] than compiz [01:04] holstein, I like the matching load up screen though, and don't wanna spend a lot of time deleting stuff I don't need [01:05] you can sudo apt-get install xubuntu-desktop [01:05] holstein, but compiz makes it a lot worse than when turned off [01:05] and choose between them [01:05] gnome or XFCE [01:05] at login [01:05] holstein, how do i get the load up screen for xubuntu? [01:05] OR just sudo apt-get install xfce [01:06] this talks about that [01:06] http://tuxicity.wordpress.com/2007/01/30/howto-switch-from-ubuntu-to-kubuntu-or-xubuntu-or-edubuntu-or-vice-versa-610-edgy/ [01:06] at the bottom [01:07] sudo dpkg-reconfigure gdm [01:07] i usually just roll with gdm [01:33] back [01:33] talkin to yall while i test my stuff here [01:33] saying what i type to very sync quality [01:33] i see [01:34] i wish screencasting was as smooth in linux as windows [01:35] i also wish for the official yahoo messenger haha [01:35] http://wootangent.net/category/music/tutorials/ [01:35] here is a friends site [01:35] oh btw vlc webcam display messes up gtk-recordMyDesktop [01:35] with a bunch of nice screencasts [01:36] you want to elaborate on 'messes up' ? [01:36] it doesn't encode after and refuses to close until i xkill it and then i have to log out and back in to restore the theme [01:36] the encode process sticks at 0. it freezes [01:36] robertzaccour: lets start at the beginning [01:36] what are you trying to do? [01:37] oh nothin just testing out my recording [01:37] im not clear on what you need the webcam for [01:37] holstein, recording [01:37] right [01:37] recording what? [01:37] recordmydesktop does audio [01:37] and the desktop [01:37] yep [01:37] and my open webcam [01:37] so im not clear on what you need VLC for? [01:37] or cheese [01:37] i don't [01:38] it messes up recordmydesktop [01:38] right [01:38] testing out cheese w/o compiz [01:38] but why is it open [01:38] at all? [01:38] to record me haha [01:38] in what capacity? [01:38] im not clear? [01:38] on what the goal is [01:38] IF you want the webcam [01:38] and audio [01:38] use VLC [01:38] alone [01:38] i don't know yet, just want it to work for now [01:39] but i like the destkop being in there also [01:39] like or need? [01:39] or want? [01:39] and in what capacity [01:39] im just suggesting that you might not be using te proper tools [01:39] to get the best results [01:39] IF we can get a handle on what you want to do [01:40] you should be able to have cheese open [01:40] I'm thinking about uploading gameplay from my dazzle capture device of my online game play of smackdown vs raw 2011 and also incorporate myself and what I'm doing online also [01:40] streaming your image on the screen [01:40] and capture the whole she-bang [01:40] with record my desktop [01:40] thats what i'm doing [01:40] testing out sync of audio/video [01:40] right [01:40] you'll need to fiddle with the quality settings [01:41] thats not what cheese is for [01:41] realtime display of the webcam [01:41] thats what you need [01:41] something that is just 'showing' the webcam [01:41] on the screen [01:41] i got cheese open and the desktop recording it while open and recording audo also [01:41] something you can control the quality of [01:41] what do you mean realtime display of webcam? [01:41] OK... [01:41] i control the quality of recordmydesktop [01:41] when you hit the record button [01:42] on recordmydesktop [01:42] and cheese and recordmydesktop automatically render in 720p [01:42] its recording what you say [01:42] thats pretty fast [01:42] pretty good [01:42] and the desktop too [01:42] as long as compiz is shut off haha [01:42] that'll be pretty much right on [01:42] BUT [01:42] cheese [01:42] its roll is not for that [01:42] hopefully the audio and video stay in sync [01:42] its made for another task [01:42] SO [01:42] what application would you recommend? [01:42] its showing your imamage on the screen [01:42] whenever it wants to [01:42] late or whatever [01:43] no its realtime [01:43] with no regard for sync [01:43] if it were [01:43] we would not have this issue [01:43] and, its not what you need anyways [01:43] you're not using cheese for anything [01:43] what do i need? [01:43] other than just showing you're head on the screen [01:44] let me look a bit [01:44] robertzaccour: this is do-able [01:44] i tell people all the time [01:44] in linux the answer is almost always yes [01:44] you'll just need to look around a bit more [01:44] and aks questions [01:45] theres not a 'microsoft' or another commercial entity [01:45] interested it you making sure you find the software [01:45] just you [01:45] and me [01:45] and some other folks [01:46] i know it worked perfectly in camtasia studio in windows, but that switch would be a stretch i'd rather now [01:46] ubuntu is much more simple than windows for me [01:46] for the most part [01:47] this is the kind of thing that gets fiddly [01:47] you can try 'camtasia' in wine [01:50] holstein, you think that would work? [01:50] its a big application [01:50] doesnt matter [01:50] have you checked winehq? [01:51] not yet [01:51] http://appdb.winehq.org/ [01:51] sounds to me like you might just be missing a function [01:51] of that software [01:51] might have to decide what you need [01:51] and go from there [01:51] sounds like you're just trying to emulate that software [01:51] thats not going to happen [01:52] IF you need to capture the screen, that can happen [01:52] screen and video can happen [01:52] screen and audio [01:52] http://appdb.winehq.org/objectManager.php?sClass=application&iId=7983 doesn't say much [01:52] might just be something no one has thought of [01:52] i know im having a hard time realizing what the need for that is [01:52] BUT you could probably bring it up somewhere [01:53] and get someone interested in wrting it [01:53] if you need it, im sure someone else might [01:53] nothing is impossible [01:54] would an application need development to work in wine? [01:54] robertzaccour: gives it a 'garbage' rating [01:54] who does? [01:54] winehq [01:54] im not suggesting you try and 'fix' that software [01:54] that wont happen [01:54] you can write something from scratch though [01:55] robertzaccour: what machine are you on? [01:55] what specs? [01:57] emachines e527-2537 [01:58] 2gb ddr3 ram 2.2 Ghz single core 64 bit [01:58] should be fine [01:58] recordmydesktop and compiz are working fine for me [01:58] what nvidia driver are you using? [01:58] i don't have nvidia [01:59] ok [01:59] what graphics card do you have? [01:59] and what driver are you using? [02:00] sometimes the proprietary ones have better support for certain things [02:00] compiz and whatnot [02:00] on a machine of those specs [02:00] the DE isnt going to help [02:00] its going to be driver support [02:00] thats plenty to push compiz and whatever else [02:00] along with gnome [02:01] oh ok [02:02] i might wanna do something similar to what osgui does on youtube [02:02] osgui is? [02:03] robertzaccour: you going to be here for a minute? [02:03] i'll just try what you are trying here [02:03] and see if it works... [02:03] ok screencasting works great now :) [02:03] just not with compiz on [02:04] ohh ok [02:07] yeah, see [02:07] i have lag already [02:07] just opening cheese [02:07] cheese is late [02:08] VLC is late too [02:09] robertzaccour: yeah, we need a simpler tool [02:09] for this purpose [02:09] something that will get the webcam to the desktop faster [02:10] thats where the breakdown is for me [02:10] its like a quarter second [02:10] yup [02:10] or you can record the audio separately and sync it in pitivi or kdenlive maybe [02:10] i mean, its a webcam [02:10] its not really supposed to do that [02:10] i think it depends on your hardware [02:10] robertzaccour: thats do-able maybe [02:10] sync later [02:10] osgui and others on youtube use cheese and its fine for them [02:11] and osgui is?? [02:11] robertzaccour: ask about the hardware [02:11] maybe its not a cheesy webcam like i hav [02:11] e [02:11] cheese *is* overkill for this though [02:11] i have a 720p webcam its logitech [02:12] cost only like 34 bucks [02:12] you just want your head in a box [02:12] robertzaccour: doesnt matter [02:12] matters more about driver support in linux really [02:12] and quality second [02:12] yeah driver support really sucks in Linux, even though I prefer Linux as an OS [02:12] better than windows [02:12] or osx [02:13] but you have to be real choosy before you buy [02:13] the linux kernel supports an amazing number of devices out-of-the-box [02:13] actually windows has the best driver support because they are tailored for windows from the start [02:13] yes true [02:13] nah [02:13] from my experience [02:13] windows doesnt support any devices really [02:14] the vendors are given the tools and permission to write drivers [02:14] preinstalled i meant [02:14] but they are not inculded in windows [02:14] yes true [02:14] almost nothing is supported by windows [02:14] OSX is worse ;) [02:15] they are all getting better all the time though [02:15] as they should [02:15] robertzaccour: if you have friends that you can aks [02:15] that are doing exaclty what you are doing [02:15] i say ask them how [02:15] i think cheese is overkill [02:15] people's computers ahve to work the way they want them to. whether its the vendors decision to support Linux and its outside their control, it doesn't matter who's fault it is all that matters is that stuff works the way its intended [02:15] and i dont know what to suggest [02:15] cheese is the best option that i know of [02:16] and im not going to be motivated to find it [02:16] robertzaccour: its not a matter fault [02:16] im allowed to write my own drivers [02:16] if i know how [02:16] and choose to learn [02:17] in windows, i might not be given that same luxury [02:17] i don't wanna do configuring haha i want everything to work automatically :) [02:17] anyways, this is not a 'coke' 'pepsi' battle [02:17]