similar to: Theora beta2 released

Hello list, When I convert an yuv pixel into rgb using the recipies in http://www.fourcc.org/fccyvrgb.php I get an accurate color conversion but the contrast seems to be decreased. If i write, e.g., the pixel directly into an sdl yuv_overlay, I get a well-contrasted frame, however, if I convert the pixel to rgb and call SDL_MapRGB, I get a contrast-decreased frame. Thanks, Ribamar

When using the IDCT routines, the C version [ lib/idct.c: oc_idct8x8_c(ogg_int16_t _y[64],int _last_zzi)] in libtheora 1.1.1, the decoded image is garbled. Is it functionally equivalent to the MMX optimized version [lib/x86/mmxidct.c: oc_idct8x8_mmx(ogg_int16_t _y[64],int _last_zzi)] ? I used some of the Theora video files from here: http://wiki.xiph.org/index.php/List_of_Theora_videos for

Hi, I'm attempting to decode Theora videos on a PowerPC running a Linux 2.6.19 kernel. The version of GCC I'm cross-compiling from is 3.4.4. The software versions I'm running are: libogg-1.1.3 libpng-1.2.20 libtheora-1.0beta1 libvorbis-1.2.0 These are all the latest I was able to download. Here's a back trace I got while running "dump_video" under

Hi I was surprised with size of Theora files and thought of feedback. Following 1minute duration Theora and Xvid files were made from a y4m file. The resolution is 1280x720: 1. Xvid 17MB 2. Ogg/Theora Q7 31MB 3. Ogg/Theora Q8 38MB 4. Ogg/Theora Q9 49MB 5. Ogg/Theora Q10 61MB The Xvid file was made using mencoder by 2 passes with following options:

I'm interested in ignoring the audio stream in a theora encoded file. My first attempt was to remove the test for vorbis: /* identify the codec: try theora */ if(!theora_p && theora_decode_header(&ti,&tc,&op)>=0){ /* it is theora */ memcpy(&to,&test,sizeof(test)); theora_p=1; }else if(!vorbis_p &&

Hi all I have the raw out put of a video camera in following format: mjpegb, yuvj422p, 1920x1080, 24.00 fps(r). I cannot directly convert this raw footage to Theora due to the YUV4MPEG2 only restriction of the encoder_example. Isn't it better to support other raw formats in encoder_example, such as what I have, mjpegb, yuvj422p? I presume even if I convert the mjpegb, yuvj422p to

Hi My PC is Intel Pentium P4-HT, running Linux kernel 2.6.0-test10. I have the latest GNU automake/autoconf system. The make fails on libtheora with the following error msgs: player_example.c:29:1: warning: "_REENTRANT" redefined player_example.c:1:1: warning: this is the location of the previous definition /bin/sh ../libtool --mode=link gcc -O2 -D_REENTRANT -all-static -o

Today I've got first video clips made by the camera and compressed "on the fly" - 1280x1024x30fps. Image quality is far from perfect - I don't have yet any way to preview images, and a single acquisition still requires a bunch of commands. So I'm really close to have a camera that will be able to serve the Ogg/Theora streams, now but will it be possible to play it on a PC? I

On 17.01.2011 12:35, Raju wrote: > Dear friends > Recently i have downloaded Theora video codec from http://www.xiph.org/ > , > here its having both encoder and decoder , how can i build only > decoder on VC + windows platform , if i build now i will be getting " > Cannot open include file: 'ogg/ogg.h': No such file or directory " > pls send me solution for

Okay, thanks to some stubbornness on my part and helpfulness on the part of people on this mailing list, I got the Ogg Theora alpha compiled up and installed and running. Yesterday, I went to the Prelinger archives (the public-domain video archive at www.archive.com) to find a high-quality original to re-encode as a test. The encoder worked just fine, and playback as well, and I thought I'd

hi all: i downloaded libtheora1.0.tar.gz from xiph.org, and when i compile it, such error message popped. i tried to run player_example.c under /libtheora_1.0/examples/. error message: ivysummer at ivysummer-desktop:~/??/libtheora-1.0/examples$ gcc -o player player_example.c /tmp/ccpyle3c.o: In function `buffer_data': player_example.c:(.text+0x15): undefined reference to

All, After months of intensive development, we're finally coming to a stopping point in our rewrite of the libtheora reference implementation. All major features for the 1.1 are in, so it's down to bug fixing now. Please try this first beta and give us feedback. Most notable is that the encoder's rate control is much more configurable, and more capable in each configuration than

All, After months of intensive development, we're finally coming to a stopping point in our rewrite of the libtheora reference implementation. All major features for the 1.1 are in, so it's down to bug fixing now. Please try this first beta and give us feedback. Most notable is that the encoder's rate control is much more configurable, and more capable in each configuration than

Hello, I want to make a program to extract frame from a theora movie as images. I tried with the decoding example located at theora web site (dump_video.c. I use it to extract a frame as yuv image but when I try to convert it to ppm with yuvtoppm program i obtain a strange image ( see http://poux.be/tmp/file.ppm ). I think it's a problem with the byte order for yuv, but don't I don't

Hello there, I have been working on an alternative version of the png2theora example: The basic idea is to change the input of the program, using a QImage [1] variable instead of a png array. This is my base file: http://www.maefloresta.com/tmp/example.cpp The point where I am stuck starts at this comment: // LOOK HERE (line 313) And here is the issue: QImage supports RGB images, so my first

Hello! I'm trying to use ffmpeg2theora to encode raw (.yuv) files in I420 format (just frames, no headers at all), but failed to find corresponding input format. Is there any documentation of supported formats for ffmpeg2theora? Or maybe there is another command-line tool for Windows to encode raw video using Theora algorithm? Thank you for help! Alexander.

Hi all I need a small help to get my first C program to compile on Widows 8.1. I'm an Unix guy but new to Windows. I installed MS Visual Studio 2013 free version and the LLVM 3.6.0 binary pre-built version. Here is my sample C program: #include <stdio.h> int main() {   printf("hello world\n");   return 0; } 1. >clang test1.c -o test1.exe test1.c:2:10: fatal error:

Hi , There are 2 new relases of libTheora , now in beta status. New bitstream revision to 3.2.1 of libTheora. MultiThread Theora Encoder. I think is needed a new version of ffmpeg2theora to test the new stuff. When will be released a new version of ffmpeg2theora? _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today

HI, I have a question about libtheora examples. I have modified png2theora source code and the encoder stops after 3000 encoded frames. I don't know if it s a limitation in libtheora or something else. Manuel Dahmen. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora/attachments/20101210/016e4b8e/attachment.htm

Hello all, Very new to Theora so apologies if this sounds elementary ;-) I'm trying to integrate a simple theora video player in my engine. All I need is simple load/unload and play/stop functionality. I'd also like to be able to stream from disk or mem. Other than the API reference I haven't found any example code, e.g. the sources for theora_player_example. Are these available