On 18/07/14 11:54, Carlos sanchiavedraz wrote: Hi Carlos, I have been developing a VJiing software for a while, called VJPirate (http://hitmuri.net/index.php/Software/VjPirate) It still needs a lot of rewriting and redesigning on the interface side but is usable and has been used for quite a while by a friend i am playing with (you can see some example of live perfs where the visuals are done with VjPirate on http://thehobartphase.net) It works on GNU/Linux and MacOSX. It is based on the principle of grids of images / shapes with parameters, and you can define patterns of scales for the parameters so that a change in the parameter impacts the whole grid. Everything can be MIDI, Audio and OSC controlled. You can extract different features from the audio (loudness, brightness, onsets ...) and use them to control visual parameters. If you want to try it, you should grab the development branch (called mac but it works on linux) on: https://code.launchpad.net/~hitmuri/vjpirate/mac Let me know if you have any questions. Regards, Florent -- http://hitmuri.net _______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-user

BTW, I've realized your web, Hitmuri.net. IIRC, You had Freewheeling videos jamming and livelooping with an electronic drumkit long time ago, Were you?

I enjoyed them very much.

Freewheeling always have been my favourite livelooper, but lately I'm using sooperlooper because you can run it without X on a Raspberry PI, and it seems FW can't (I'm sure there is a way, but didn't researched it yet). It seems somebody in the FW is reviving it. It would be great.

I'm trying the "lazy" way for once <snip> be great to have a nice and easy GUI for dummies :) ).

I don't know if Praxis LIVE (www.praxislive.org <http://www.praxislive.org>) would be of interest to you? I know it's been used by a few VJs. It's partly aimed to be a free alternative to software like Isadora - patcher style but at a higher level to things like PD, though it also has the ability to create custom components in code.

This may be a ridiculous question, but I'm not nearly as good at video as I am at audio, and I'm actually trying to solve this problem as the thread came up, so I thought I'd throw it out there: Are any of these tools useable for live television production? I've been requested to add video to the audio capabilities of my studio, and I'd like to stick with open source stuff as much as possible, sticking with my design goals. I need the usual stuff-- graphics, maybe bring in some desktop things for video conferencing. I've looked at what's out there, and it seems pretty early days. Not stuff I'd feel comfortable someone who's not code-inclined operating. If I can back that into an OSC interface and just provide some shiny buttons that do obvoius things, that changes the situation.

On Sat, 2014-07-19 at 13:13 +0200, Robin Gareus wrote: > http://dvswitch.alioth.debian.org/wiki/

"[...] komplett ohne) Budget [...]" exactly fits to me :D. When opening http://gareus.org/_export/s5/wiki/dvswitch_slides with

On Sat, 2014-07-19 at 13:13 +0200, Robin Gareus wrote: "[...] komplett ohne) Budget [...]" exactly fits to me :D. When opening http://gareus.org/_export/s5/wiki/dvswitch_slides with Firefox 30.0, Google Chrome Stable 36.0.1985.125 and QupZilla 1.6.6 only [1] is displayed. When clicking on the flip chart nothing happens. When the website starts, I can see for less than a second a table of content. Regards, Ralf

On Sat, 2014-07-19 at 13:13 +0200, Robin Gareus wrote: "[...] komplett ohne) Budget [...]" exactly fits to me :D. When opening http://gareus.org/_export/s5/wiki/dvswitch_slides with Firefox 30.0, Google Chrome Stable 36.0.1985.125 and QupZilla 1.6.6 only [1] is displayed. When clicking on the flip chart nothing happens.

When the website starts, I can see for less than a second a table of content.

On Sun, 2014-07-20 at 10:47 +0200, Robin Gareus wrote: I guess it was a good workshop, but the slide show isn't useful for me. Nevertheless it's good to know that Jörn and you cared about, how to get something working with less money. " nicht ohne Ecken und Kanten suboptimale Effizienz" ^^^^^^^^^^^ nice anti-word, first introduced to public by Ex-Bundeskanzler Gerhard Schröder ;) We expect edgily (Ecken und Kanten) and somewhat less than perfect efficiency (suboptimale Effizienz) for less money, but that doesn't mean that it's bad :). Close to my home there's a party at an amateur soccer club. The sports area's public address system and the way the speakers use it is disgusting amateurish, but fit to their needs, they don't present theatre or professional music performance ;). A wiki how to use Linux with less money, to do some amateurish video life "usage" (handling the streaming) would be nice ;). Regards, Ralf _______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-user

On Sat, 19 Jul 2014, Robin Gareus wrote: I thought I would try it out... There is also a dvsource-v4l2-dv for USB devices... Hmm, I have a Canon eos 60d which will record nice videos that I can download and edit with any sw... I can tether it with entangle and use that to fully control the camera from my desktop, in preview mode I can see the live video from the camera on my screen... but get it to show up as /dev/video* ? not a chance. dmesg shows: [17678.621172] usb 3-7: new high-speed USB device number 8 using xhci_hcd [17678.634428] usb 3-7: New USB device found, idVendor=04a9, idProduct=3215 [17678.634437] usb 3-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [17678.634442] usb 3-7: Product: Canon Digital Camera [17678.634446] usb 3-7: Manufacturer: Canon Inc.

Anything I can find suggests using a screen reader to get the live video into the computer.

(even for windows or mac)

Sounds silly. Am I missing something? There is no audio that way.

Date: Mon, 21 Jul 2014 17:46:20 -0700 From: len(a)ovenwerks.net To: robin(a)gareus.org CC: linux-audio-user(a)lists.linuxaudio.org Subject: Re: [LAU] live video switching? WAS: Re: VJ / VeeJing software alternatives On Mon, 21 Jul 2014, Robin Gareus wrote: That was my point ... no driver. It doesn't advertise itself as a video device. That is the problem, the camera can do a number of things and look to the computer like a USB drive, ptp camera or something else. So there needs to be something other than v4l to deal with it... something that has enough user input to tell it that "right now I want to use this as a <whatever>." There is no way of knowing when the user plugs it into the USB port what they want to do. The computer assumes download pictures. That is meant for DV. I don't have that. (I also don't seem to have the vloopback) The Camaras come with tethering SW and I can use entangle in Linux for the same thing. They all offer a preview mode which is video. The idea is to screen capture that part of the screen and feed it to video. It seems most of these things want to use an older kernel... that is they have not been maintained for some time. I get the idea that in times past a DV/firewire interface was the chosen method of connecting a camera to the computer. But the latest batch of cameras are now all USB2.0 because everyone has them. Video streaming does not seem to be something that is easy to set up... not something Canon intends these DSLRs to be used for, so there seems to be know way of setting them up to connect to the computer as a "webcam". I think it is the camera that does not set itself up the right way. Preview mode creates video in any case. I do not know what the latency is internal to the camera itself, but the whole chain from camera sensor to screen in preview seems about 1/3 sec. There will be drift anyway with more than one camera, but if dvswitch starts frame grabbing fresh with each switch action it will remain very close. Add a bit of delay to the audio and the brain will sort things out just fine. It seems obvious to me that the video sources are synced using frame store techniques in DVswitch as memory is cheaper than extra cables and master sync generators. (and cameras with external sync in) -- Len Ovens www.ovenwerks.net _______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-user

On Sat, 2014-07-26 at 18:55 +0000, Kaza Kore wrote: On German television a view years ago was a report about BBC developing

software for their company using Linux. IIRC they used professional video hardware and IIRC it really was top-notch professional video hardware.

Not video switching, and if all your video sources are going to be consumer products it may be of no interest to you, but the BBC has done a fair amount of research and development into tapeless production on Linux over the years. Mainly multi-channel recording, using prosumer Blackmagic card giving up to 4x SD in/outs.

Date: Sun, 27 Jul 2014 08:56:53 -0700 From: len(a)ovenwerks.net To: dj_kaza(a)hotmail.com CC: linux-audio-user(a)lists.linuxaudio.org Subject: Re: [LAU] live video switching? WAS: Re: VJ / VeeJing software alternatives On Sat, 26 Jul 2014, Kaza Kore wrote: Actually, my consummer Canon 60D has no video over USB, but does have both video out and hdmi out. So these cards are certainly a working solution. The cost compares very favourably with many of the audio cards mentioned/recomended on this list too. with a single i/o starting at $145 and four channel i/o still less than $1000 (manufacture's recommended price). For PCIe, there are also USB3 and Thunderbolt (AKA firewire with a converter? I have noticed all the new firewire audio IF call themselves Thunderbolt compatable with an adaptor)

And it seems once again I am behind in my knowledge of new video standards (probably old by now) Both this product as well as the Rohde & Schwarz stuff talk about audio embedded in the video. 16 channels AES/EBU (8 pairs) per video channel. Maybe this is another audio interface solution as well. (the box for embedding would be somewhat pricy $1000 for aes in then ADCs to feed that... USB2 with an ADAT would be way cheaper for the same channels)

Best of all, both products proudly display that they have both drivers and SDK for Linux. The Blackmagic says they are open standard capture cards and that the SDK is free (maybe not open?). It appears that the target audience for these products are used to doing their own inhouse software to use them. The recommended system to run them on does not seem above midrange for a home system. It seems many of these cards do some switching/keying on the card. I would guess this includes fades as well.

-- Len Ovens www.ovenwerks.net

On 18 Jul 2014 11:55, "Carlos sanchiavedraz" &lt;csanchezgs(a)gmail.com&gt; wrote: I don't know if Praxis LIVE (www.praxislive.org) would be of interest to you? I know it's been used by a few VJs. It's partly aimed to be a free alternative to software like Isadora - patcher style but at a higher level to things like PD, though it also has the ability to create custom components in code. Best wishes, Neil Neil C Smith Artist : Technologist : Adviser http://neilcsmith.net