Hi Edmore, If you would like to test it out from the command line you can use: gst-launch -e v4l2src device=/dev/video0 ! image/jpeg, width=1920, height=1080, framerate=30/1 ! queue ! jpegdec ! videorate ! ffmpegcolorspace ! ffenc_mpeg2video ! mpegpsmux ! filesink location=video.mpg
This will keep running until you hit a ctrl+c to stop it. The -e is to make sure that it closes the file correctly so that you end up with good media. I've changed Ruben's "video/x-raw-yuv" to a "image/jpeg". I'm afraid those c910 cannot do 1080p in raw format, only in motion jpeg. If you want to find out exactly what frame rates your webcam can support at what resolutions the best way is to run: export GST_DEBUG=3 Then run: gst-launch -vvvve v4l2src device=/dev/video0 ! fakesink This will spit out a giant list of all the possible settings for that device that will look something like this: http://pastebin.com/52NeNkvy With each possibility ending with a ";" So for example my webcam has this possible caps: video/x-raw-yuv, format=(fourcc)YUY2, width=(int)1280, height=(int)800, framerate=(fraction){ 10/1 }; So if I use the resolution 1280x800 I can only use a framerate of 10/1 (aka 10 fps). The next one shows: video/x-raw-yuv, format=(fourcc)YUY2, width=(int)1280, height=(int)720, framerate=(fraction){ 10/1, 15/2 }; That if I use 1280x720 I can either use 10/1 or 15/2 (10 FPS or 7.5 FPS) as options. Hope this helps! Adam Adam McKenzie ITS, University of Saskatchewan Rm 61 Physics, 116 Science Place Saskatoon SK S7N 5E2 Canada (306) 966-2453 ________________________________ From: [email protected] [[email protected]] on behalf of Edmore Moyo [[email protected]] Sent: Monday, October 31, 2011 6:53 AM To: [email protected] Subject: Re: [Matterhorn-users] duration issue? problem with audio/video sync Hello, Thank you Rubén Pérez we will give it a try and let you know how it goes. Regards, Edmore Moyo UCT >>> Edmore Moyo 10/24/2011 9:24 AM >>> Good day, I am a newbie to the Matterhorn community. We are experiencing a similar issue as the one stated here : http://opencast.3480289.n2.nabble.com/Matterhorn-users-duration-issue-problem-with-audio-video-sync-tt6355528.html Was this issue ever resolved? We have tried encoding our presenter file with ffmpeg 0.6, 0.7.6 and 0.8.2 but the duration of the presenter file is always significantly less than before encoding. This is not the case with the other files though their duration remains the same. This has led us to suspect that this is an issue to do with the source file generated or some sort of camera incompatibility. We are using a logitech c910 camera and the following config settings: capture.device.Presenter.customProducer=v4l2src device=/dev/video0 ! image/jpeg,width=1920,height=1080,framerate=30/1,rate=30 ! queue ! jpegdec ! queue ! ffmpegcolorspace capture.device.Presenter.flavor=presenter/source capture.device.Presenter.outputfile=Presenter.mpg capture.device.Presenter.src=/dev/video0 capture.device.Presenter.type=CUSTOM_VIDEO_SRC We were initially using : capture.device.Presenter.customProducer=v4l2src device=/dev/video0 ! image/jpeg,width=1920,height=1080,framerate=15/1,rate=15 ! queue ! jpegdec ! queue ! ffmpegcolorspace but on viewing the source file using mediainfo it was not showing a duration and the frames per second were 0.00fps Regards, Edmore Moyo UCT ### UNIVERSITY OF CAPE TOWN This e-mail is subject to the UCT ICT policies and e-mail disclaimer published on our website at http://www.uct.ac.za/about/policies/emaildisclaimer/ or obtainable from +27 21 650 9111. This e-mail is intended only for the person(s) to whom it is addressed. If the e-mail has reached you in error, please notify the author. If you are not the intended recipient of the e-mail you may not use, disclose, copy, redirect or print the content. If this e-mail is not related to the business of UCT it is sent by the sender in the sender's individual capacity. ###
_______________________________________________ Matterhorn-users mailing list [email protected] http://lists.opencastproject.org/mailman/listinfo/matterhorn-users
