FFmpeg

Commit Graph

Author	SHA1	Message	Date
Jean Delvare	16fd75ceec	lavfi/delogo: use weighted interpolation The original delogo algorithm interpolates both horizontally and vertically and uses the average to compute the resulting sample. This works reasonably well when the logo area is almost square. However when the logo area is significantly larger than high or higher than large, the result is largely suboptimal. The issue can be clearly seen by testing the delogo filter with a fake logo area that is 200 pixels large and 2 pixels high. Vertical interpolation gives a very good result in that case, horizontal interpolation gives a very bad result, and the overall result is poor, because both are given the same weight. Even when the logo is roughly square, the current algorithm gives poor results on the borders of the logo area, because it always gives horizontal and vertical interpolations an equal weight, and this is suboptimal on borders. For example, in the middle of the left hand side border of the logo, you want to trust the left known point much more than the right known point (which the current algorithm already does) but also much more than the top and bottom known points (which the current algorithm doesn't do.) By properly weighting each known point when computing the value of each interpolated pixel, the visual result is much better, especially on borders and/or for high or large logo areas. The algorithm I implemented guarantees that the weight of each of the 4 known points directly depends on its distance to the interpolated point. It is largely inspired from the original algorithm, the key difference being that it computes the relative weights globally instead of separating the vertical and horizontal interpolations and combining them afterward. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Stefano Sabatini <stefasab@gmail.com>	12 years ago
Carl Eugen Hoyos	674d8a9629	Rename thread_init() in libavcodec and libavfilter as library_thread_init(). The aix header sys/thread.h contains a definition for thread_init().	12 years ago
Carl Eugen Hoyos	33f5d70df5	Rename constant HZ in af_biquads.c as HERTZ. The aix header sys/m_param.h defines HZ as _HZ.	12 years ago
Michael Niedermayer	2236456715	avfilter/avfilter: Make avfilter_register() thread safe Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	ef90639004	avfilter/vf_mp: preserve pixel format when possible Fixes Ticket2577 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	ee97982408	avfilter/src_movie: Fix handling of packet size for video See Ticket2556 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	87bc648930	libavfilter/src_movie: fix which packet is reset Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	73215fe30a	vf_drawbox: give all v_log() a context Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	47da9b2c51	vf_drawbox: avoid declaration in for() arguments Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Mark Visser	84f571e37f	enabled expressions on x, y, w, h and t parameters for drawgrid and drawbox, added examples	12 years ago
Michael Niedermayer	015cc3239a	lavfi/movie: free packet on decoder error Prevents infinite loop, see Ticket2556 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	8a7aabe80b	avfilter/vsrc_testsrc: fix artifacts with odd height Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Anton Khirnov	eeeb5c291d	vsrc_movie: do not free avoption variables in uninit() The generic code frees them as well. Since av_free was used to free them instead of av_freep, this would result in a double free.	12 years ago
Jean Delvare	b08cd2fb94	delogo: Fix function description The algorithm works on src and writes to dst, not the other way around. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Mark Visser	2090abcc43	add the start_number offset to var_values[VAR_N] directly, instead of adding it in func_frame_num	12 years ago
Anton Khirnov	c9c7bc4493	lavfi: switch ff_default_get_audio_buffer() to av_frame_get_buffer() This simplifies the code and avoids using libavcodec-specific avcodec_fill_audio_frame().	12 years ago
Alexander Strasser	ac604e446b	lavfi/src_movie: Use movie_common_init instead individual wrappers Makes it easier to understand that there is no difference in init callback for movie and amovie. Also saves a few lines of code. Signed-off-by: Alexander Strasser <eclipse7@gmx.net>	12 years ago
Alexander Strasser	c679a1c358	lavfi/src_movie: Check pointer is not NULL before deref Also do not check against empty string, the lower levels should be able to deal with it. Signed-off-by: Alexander Strasser <eclipse7@gmx.net>	12 years ago
Vittorio Giovara	cd0faeee62	lavfi: math typo in interlace filter Signed-off-by: Luca Barbato <lu_zero@gentoo.org>	12 years ago
Mark Visser	0defc77e9d	added start_number parameter to drawtext to permit an offset to n/frame_num var	12 years ago
Clément Bœsch	147adf2c4f	lavfi/spp: fix description.	12 years ago
Jean Delvare	cef42ded8d	drawbox: Respect thickness parameter The drawbox video filter is drawing lines one pixel thinner than requested. The default thickness is 4 pixel but in fact the lines drawn by default are only 3 pixel wide. Change the comparisons in the code to fix this off-by-one bug. Also change the default thickness from 4 to 3 to minimize the unexpected changes from the user's perspective. As I was already touching these lines, I also removed the "maximum" in the thickness parameter description, as I don't think it was adding any value and I even found it confusing. Reviewed-by: Andrey Utkin <andrey.krieger.utkin@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Clément Bœsch	852f74bd85	lavfi/mp: remove mp=spp. The filter was ported to a native libavfilter filter.	12 years ago
Clément Bœsch	a2c547ffec	lavfi: add spp filter.	12 years ago
Stefano Sabatini	e0135a4bcd	lavfi/rotate: add angle command	12 years ago
Stefano Sabatini	dc5e26d67f	lavfi: add rotate filter Based on the libavfilter SOC filter by Vitor Sessak, with the following additions: * integer arithmetic * bilinear interpolation * RGB path * configurable parametric angle, output width and height Address trac issue #1500. See thread: Subject: [FFmpeg-devel] [WIP] rotate filter(s) Date: 2010-10-03 17:35:49 GMT	12 years ago
Michael Niedermayer	d3e89f2641	vf_sab: Fix memleak Fixes CID1030353 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Clément Bœsch	b77e58aad3	lavfi/pp: set out frame size. w/h from input frame are not copied in av_frame_copy_props(). This commit avoids a mismatch between aligned_[wh] and outbuf->{width,height} (and thus avoids triggering an assert in avfilter because of this).	12 years ago
Clément Bœsch	f97e28ebe5	lavfi/lut3d: add sanity checks. Should fix CID1026775 and CID1026774.	12 years ago
Paul B Mahol	3554238863	lavfi/il: add timeline support Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Paul B Mahol	7d01533371	lavfi/framestep: cosmetics: reindent AVFilter Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Paul B Mahol	27d3d61343	lavfi/framestep: add timeline support Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Stefano Sabatini	449558d34a	lavfi/mp: remove mp=sab The filter was ported to a native libavfilter filter.	12 years ago
Stefano Sabatini	841df7bf86	lavfi: port sab filter from libmpcodecs	12 years ago
Anton Khirnov	8b7dffc2d6	lavfi doxy: improve/extend AVFilter doxy.	12 years ago
Michael Niedermayer	43487bc5c1	avfilter/vf_mcdeint: free frame on error Fixes CID1026766 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	3ed56b3b39	avfilter/process_options: fix memleak Fixes CID1026765 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	7e7d090907	avfilter/af_astats: rename stat() See CID1026741 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Nicolas George	50a4d076ce	lavfi/trim: mark link closed on EOF. Fix trac ticket #2620.	12 years ago
Stefano Sabatini	ec34963276	lavfi/mp: drop mcdeint wrapper It was ported to a native libavfilter filter.	12 years ago
Stefano Sabatini	e89182fc94	lavfi: port mcdeint filter from libmpcodecs	12 years ago
Stefano Sabatini	3a2b9911bf	lavfi/mp/mcdeint: avoid uninited data read Do not read padding or out-of-buffer values when computing the output value for a pixel close to the image buffer edge. This avoids non visible artifacts which affected the output checksum. See thread: Subject: [FFmpeg-devel] [PATCH] lavfi/mp/mcdeint: avoid uninited data read Date: Thu, 30 May 2013 18:57:14 +0200	12 years ago
Clément Bœsch	1fb52bf920	lavfi/mptestsrc: fix chroma subsampling with odd sizes. This makes no difference in practice since w & h are hardcoded to 512.	12 years ago
Clément Bœsch	7ba04b3c48	lavfi/pixdesctest: fix chroma subsampling with odd sizes.	12 years ago
Clément Bœsch	7de8a38160	lavfi/vignette: remove extra semi-colon.	12 years ago
Clément Bœsch	2886e8065e	lavfi/vignette: add aspect option.	12 years ago
Clément Bœsch	33620e243f	lavfi/vignette: add some scaling debug.	12 years ago
Clément Bœsch	bfafcc4ebe	lavfi/vignette: simplify dmax definition.	12 years ago
Clément Bœsch	cf6f179044	lavfi/vignette: fix scale with aspects smaller than one.	12 years ago
Clément Bœsch	4a85390d29	lavfi/vignette: make sure a sane sar is set.	12 years ago

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3761 Commits (e0be3cbd2ba7558c4bc310f9ddde78b9a86d0520)