similar to: encoding image from a webcam

Displaying 8 results from an estimated 8 matches similar to: "encoding image from a webcam"

2009 Dec 07
3
Theora encoder performance
I'm evaluating some video codecs for a online conference system. I'm encoding images (640x480) from a webcam. I've been playing around with theora and xvid. First of all, using theora, the decoded image looks strange: http://integrasoft.ro/~mgliga/theora/comparison.png <http://integrasoft.ro/%7Emgliga/theora/comparison.png>. On the left side the image from the webcam, on
2010 Jan 05
3
Live Streams
Hello, i am member of red5 project. I am studying ways to integrate your codec into red5 and in a near future inside Flash Player. I want to figure some things about Theora codec. -> Is theora proper for live streams (i.e live transcondig webcam)? What is latency for encoding process? -> Is the format tolerant to lost frames? Thanks for the moment.
2009 Jul 07
1
Estimate bytes per second from th_info-settings
Hi Is there a way to estimate the number of bytes per second from the information passed in the th_info-struct to the Theora encoder's th_encode_alloc()? I'm trying to be able to give users a rough estimate of the file size needed to encode with the setting provided to th_info-struct (frame width/height, fps_numerator/fps_denominator, target_bitrate and quality). -- Bjoern
2010 Jun 04
2
OGGZ Seeking in Theora
Dear all I'm aware that there have been several discussions about the seeking issue and I'm sorry to bring this up again. To solve the problem with Inter-Frame garbage, a seek to the previous keyframe has to be made. The keyframe number should be extracted from the granulepos of the frame where we want to seek to. I hope I understood the theory - unfortunately a few questions have
2010 Mar 25
2
Questions about encoder parameters.
I have almost finished integration of Theora into our videoconferencing program. Since a videoconferencing program is realtime, it is UDP-based and wraps the Theora stream in RTP (More on that later). The problem here is that most examples I could find, wraps the theora stream in ogg, and used over tcp or files. I send over UDP and clients need to be able to start in the middle of the stream.
2014 May 05
1
Application crushes
Hi all. Can any one please help me with my problem. I wrote an application for Android, using Teorarm. It crushes when I try to play the video file. Native application, compiled with the help of Android NDK 9r in Android Studio. Program stack: #0 theorapackB_readARM () at jni/theorarm/src/dec/bitwise2ARM.s:150 #1 0x673fae80 in oc_dec_headerin (_opb=0x6dca5278, _info=0x6dca52b0,
2010 Apr 17
1
How to encode with frame offset ?
Hi all, looking at the theora spec, it says that it is possible to encode a video with a frame offset for the actual image. How is it possible to do that ? I don't see any option for it in the encoder_example. Regards, Salsaman. http://lives.sourceforge.net https://www.ohloh.net/accounts/salsaman -------------- next part -------------- An HTML attachment was scrubbed... URL:
2010 Jun 04
0
(no subject)
Hi Sahana I must admit I'm not an expert in Theora. But the error message "Could not set keyframe interval to 64" might indicate that an attempt to set the keyframe frequency failed. Have a look at the keyframe_granule_shift attribute in the th_info struct. It says: The maximum distance between key frames is 1<<keyframe_granule_shift. So I could imagine that the error might