Re: [Mjpeg-users] lavplay input source
Hallo Robert Valliant wrote: > May I ask another question? Yes :) > The man page for ppmtoy4m says: > > -S mode > Set chroma subsampling mode. (default: 444) >444 - 4:4:4 (no subsampling) >420jpeg - 4:2:0 JPEG/MPEG-1, interstitial cositing > 420mpeg2 - 4:2:0 MPEG-2, horizontal cositing > > The subsampled modes use a lousy subsampling filter; better > results will be achieved by passing > the default 4:4:4 output to a scaler which supports > subsampling, such as y4mscaler(1). > > Yet y4mscaler is not in the mjpegtools project. I'm nor sure any more but y4mscaler was programmed by Matthew Marjanovic. He did a lot for the mjpegtools project but he did never put y4mscaler into the mjpegtools project. So I/we did never distribute the y4mscaler with the mjpegtools or include it to the CVS. > Did the ppmtoy4m '-S option' improve so that y4mscaler is no longer > necessary? unlikely ;) > Is there another reason? If you mean not including y4mscaler. I think the program is a projects close to the mjpegtools. And is not included like a other tools people wrote you find on the mjpeg.sf.net > I ask because I am having compile problems with y4mscaler. Sigh. > I should really learn what I am doing shouldn't I? If it is just a compiling problem you can post the steps you have done on this mailinglist. Someone should have an idea. auf hoffentlich bald, Berni the Chaos of Woodquarter Email: shadowl...@utanet.at www: http://www.lysator.liu.se/~gz/bernhard -- Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] lavplay input source
On Mon, 5 Apr 2010, Bernhard Praschinger wrote: > I'm nor sure any more but y4mscaler was programmed by Matthew > Marjanovic. He did a lot for the mjpegtools project but he did never put > y4mscaler into the mjpegtools project. So I/we did never distribute the > y4mscaler with the mjpegtools or include it to the CVS. I think it would be a very good idea to integrate the current version of y4mscaler into mjpegtools. That way the same ./configure (autoconf, etc) process would be used and then people would not have to manually edit the y4mscaler Makefile. Cheers, Steven Schultz -- Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] mpeg2enc run time error - invalid pointer
Hi, Long time again, still trying video stuff.. Compiled mjpegtools-1.0.9, captured raw video with streamer and got this error: [...@andraslinux ~]$ mpeg2enc -o test.mlv < test.yuv INFO: [mpeg2enc] SETTING EXTENDED MMX for MOTION! INFO: [mpeg2enc] SETTING SSE and MMX for TRANSFORM! INFO: [mpeg2enc] SETTING EXTENDED MMX for PREDICTION! INFO: [mpeg2enc] Selecting Generic MPEG1 output profile INFO: [mpeg2enc] Assuming norm NTSC ++ WARN: [mpeg2enc] No aspect ratio specifed and no guess possible: assuming 4:3 display aspect! ++ WARN: [mpeg2enc] Unknown input interlacing; assuming progressive. INFO: [mpeg2enc] Progressive input - selecting progressive encoding. INFO: [mpeg2enc] Encoding MPEG-1 video to test.mlv INFO: [mpeg2enc] Horizontal size: 352 pel INFO: [mpeg2enc] Vertical size: 480 pel INFO: [mpeg2enc] Aspect ratio code: 12 = 1:1.1250 (4:3 NTSC for 720x480/352x240 images) INFO: [mpeg2enc] Frame rate code: 4 = 3.0/1001.0 (NTSC VIDEO) INFO: [mpeg2enc] Bitrate: 1151 KBit/s INFO: [mpeg2enc] Field order for input: none/progressive INFO: [mpeg2enc] Sequence unlimited length INFO: [mpeg2enc] Search radius: 16 INFO: [mpeg2enc] Using one-pass rate controller INFO: [mpeg2enc] GOP SIZE RANGE 12 TO 12 INFO: [mpeg2enc] Setting colour/gamma parameters to "NTSC" INFO: [mpeg2enc] Progressive format frames = 1 INFO: [mpeg2enc] size - setting constrained_parameters_flag = 0 INFO: [mpeg2enc] mpeg1 - setting intra_dc_precision = 0 INFO: [mpeg2enc] Using default unmodified quantization matrices INFO: [mpeg2enc] SETTING MMX and MMX for QUANTIZER! INFO: [mpeg2enc] NEW GOP INIT length 12 *** glibc detected *** free(): invalid pointer: 0x00245820 *** Aborted [...@andraslinux ~]$ I got same error before compiling latest version, this is why I compiled it. Could anybody please help? Thank you, Janos -- Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
