folks, for serious multitrack video editing you need two large monitors, see http://schoepfung-und-wandel.de/main/medientechnik.html (click images to enlarge; nvidia "twinview" = one big virtual screen).
in that setup it makes sense to output through 1394 and camcorder to watch the composition on tv (testing colours, borders, interlacing) in the way john has described. we discussed this here some time ago. however, for playback video must be rendered in real-time, which even on a powerful pc might be too slow for proper 1394 output. so, better render first to separate track (pal/ntsc) before watching... cheers, georg On Friday 21 November 2008 20:21:14 E Chalaron wrote: > John > > Why don't you simply hook a TV on your graphic card and set your X > settings to twinview? > I know it is not answering directly your question, but I would not even > bother using a camcorder for that. > Cheers > E > http://vimeo.com/super8mm > > john detwiler wrote: > > Is there any experience with "real time" output from Cinelerra via > > raw1394? > > > > I'd like to use my camcorder as an interface device, to view Cinelerra's > > "compositor" output on an NTSC television display. That is, instead of > > rendering from Cinelerra to foo.dv, and then exporting foo.dv thru, say, > > Kino to my camcorder, I would like to use the camcorder/television chain > > as a second 'head' for my workstation. > > > > What does work, in my hands: > > 1. I use the ATrtms hack for raw1394. > > 2. Kino can capture from my camcorder, and can export back to the > > camcorder, both via /dev/raw1394 ('for free', without changing any > > settings). > > 3. The camcorder can accept DV input over FireWire and display it on my > > TV via S-video. > > > > What I tried with Cinelerra: > > 1. Opened 'Settings > Preferences > Playback' and set the Video Driver > > to RAW 1394 and the Device Path to /dev/raw1394 > > 2. Pasted a video asset to the timeline and attempted to play it through > > the Compositor window. > > 3. Upon clicking the Play button, Cinelerra crashed with the following > > console output: > > > > ===begin dump=== > > Device1394Output::open VIDEO1394_TALK_CHANNEL:: Invalid argument > > signal_entry: got SIGSEGV my pid=9159 execution table size=16: > > filempeg.C: read_frame: 1167 > > filempeg.C: read_frame: 1196 > > filempeg.C: read_frame: 1161 > > filempeg.C: read_frame: 1167 > > filempeg.C: read_frame: 1196 > > filempeg.C: open_file: 164 > > vrender.C: run: 414 > > vrender.C: process_buffer: 103 > > vrender.C: process_buffer: 113 > > filempeg.C: read_frame: 1161 > > filempeg.C: read_frame: 1167 > > filempeg.C: read_frame: 1196 > > vrender.C: run: 416 > > vrender.C: run: 427 > > vrender.C: run: 439 > > vrender.C: run: 443 > > signal_entry: lock table size=17 > > 0x92872f0 CWindowTool::input_lock CWindowTool::run > > 0x8c38c40 BC_Synchronous::next_command BC_Synchronous::run > > 0x937a730 TransportQue::output_lock PlaybackEngine::run > > 0x937ad80 MainIndexes::input_lock MainIndexes::run 1 > > 0x93e6540 ResourceThread::draw_lock ResourceThread::run > > 0x90ce618 BC_WindowBase::event_condition BC_WindowBase::get_event > > 0x92acd18 BC_WindowBase::event_condition BC_WindowBase::get_event > > 0x92cc388 BC_WindowBase::event_condition BC_WindowBase::get_event > > 0x9417098 BC_WindowBase::event_condition BC_WindowBase::get_event > > 0x937cb68 BC_WindowBase::event_condition BC_WindowBase::get_event > > 0x91f1520 BC_WindowBase::event_condition BC_WindowBase::get_event > > 0x94f29f0 OSSThread::input_lock OSSThread::run 1 > > 0x948a158 CICache::total_lock CICache::check_out * > > 0x8c480c0 AudioDevice::play_lock AudioDevice::run 1 > > 0x945b1d0 RenderEngine::start_lock RenderEngine::start_command 2 > > 0x937b768 Cinelerra CTracking::update_tracker 2 * > > 0xb7e07ba0 Device1394Output::buffer_lock Device1394Output::run 1 * > > BC_Signals::dump_buffers: buffer table size=0 > > BC_Signals::delete_temps: deleting 0 temp files > > SigHandler::signal_handler total files=0 > > Aborted > > ===end dump=== > > > > Any thoughts on whether this scheme can be made to work? > > > > Thanks! > > > > _______________________________________________ > > Cinelerra mailing list > > Cinelerra@skolelinux.no > > https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra > > _______________________________________________ > Cinelerra mailing list > Cinelerra@skolelinux.no > https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra -- Dr.Kurt Georg Hooss Schoepfung & Wandel wissenschaftliche Medienberatung Breite Strasse 6-8, D-23552 Luebeck Fon +49-(0)451-3003-474 (Fax -333) www.kurts-film.de _______________________________________________ Cinelerra mailing list Cinelerra@skolelinux.no https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
