- 08 Oct, 2015 1 commit
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Jean Delvare authored
The original interpolation algorithm behaved poorly on the borders and did not even guarantee continuity at the borders. For this reason, a second interpolation/blending pass was required on the borders to make them seamless. However, since the interpolation algorithm was improved in June 2013, the border issues no longer exist. The new algorithm does guarantee continuity at the borders, making the second pass useless. A larger band always increases the cumulated interpolation error. In most cases it also increases the average interpolation error, even though the samples in the band are only partially interpolated. For this reason I would like to get rid of the "band" parameter. As a first step, let's change its default value from 4 to 1 and document it as deprecated. I have benchmarked this change on a combination of input sources and realistic logo areas. Lowering the band value from 4 to 1 resulted in 8 to 39 % less interpolation error per frame (or 1 to 34 % less interpolation error per luma sample.) Signed-off-by:
Jean Delvare <jdelvare@suse.de> Signed-off-by:
Stefano Sabatini <stefasab@gmail.com>
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- 07 Oct, 2015 39 commits
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Christophe Gisquet authored
The MBAFF handling recently introduced on the decoder side shows that the encoder does not support it correctly. Therefore, make the related profile experimental. Furthermore, current encoder logic treats it as unable to encode as progressive, which isn't the case. Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Christophe Gisquet authored
MBAFF-like handling of interlaced content in CID 1260 is different from the other CIDs, and in particular doesn't use the same syntax. Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Christophe Gisquet authored
Profiles 1256 & 1270 (currently) signal at the frame header and MB levels the colorspace used, either RGB or YUV. While a MB-level varying colorspace is not supported, whether it is constant can be tracked so as to determine the exact colorspace. This requires having bitdepth and the ACT and 4:4:4 flags, in turn needing the CID. Because setting those before having validated enough things may result in invalid/unset DSP fucntions, setting the bitdepth in the context is delayed. It is not tested against a true RGB sequence, though. Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Paul B Mahol authored
Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Nicolas George authored
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Michael Niedermayer authored
About 10% faster Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
speedup of about 1% Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Shivraj Patil authored
Modified datatype of function argument (pitch from int32_t to ptrdiff_t) Signed-off-by:
Shivraj Patil <shivraj.patil@imgtec.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Shivraj Patil authored
Modified sps and pps access from old HEVCContext(s) structure to newly introduced HEVCParamSets(ps) Signed-off-by:
Shivraj Patil <shivraj.patil@imgtec.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Arttu Ylä-Outinen authored
The -threads option is ignored with libkvazaar since it does not have any of the AV_CODEC_CAP_{FRAME,SLICE,AUTO}_THREADS capabilities. This commit removes the incorrect documentation as well as the no-op of setting the number of threads in libkvazaar encoder. Signed-off-by:
Arttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
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Arttu Ylä-Outinen authored
The divisor and dividend in the equation had been swapped, making the result the inverse of the actual framerate. Signed-off-by:
Arttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
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Arttu Ylä-Outinen authored
Replaces a for loop for copying pixels by a call to av_image_copy. Signed-off-by:
Arttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
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Arttu Ylä-Outinen authored
Signed-off-by:
Arttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
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Arttu Ylä-Outinen authored
Changes function libkvazaar_encode to return proper error codes instead of crashing when the video dimensions or pixel format change in the middle of encoding. Signed-off-by:
Arttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
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Arttu Ylä-Outinen authored
Signed-off-by:
Arttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
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Arttu Ylä-Outinen authored
Signed-off-by:
Arttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
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Arttu Ylä-Outinen authored
Function encoder_encode in Kvazaar API was changed to have new output parameters: source picture and frame info. Frame info is used to set the keyframe flag and source picture is ignored. Signed-off-by:
Arttu Ylä-Outinen <arttu.yla-outinen@tut.fi>
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Ronald S. Bultje authored
This saves one register in a few cases on 32bit builds with unaligned stack (e.g. MSVC), making the code slightly easier to maintain. (Can someone please test this on 32bit+msvc and confirm make fate-vp9 and tests/checkasm/checkasm still work after this patch?)
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Ganesh Ajjanagadde authored
This patch moves the pointer validity check outside the macro, and silences the -Waddress observed with GCC 5.2. Note that this changes the error message slightly, from: "bad option..." to "Error parsing option...". Signed-off-by:
Ganesh Ajjanagadde <gajjanagadde@gmail.com>
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Ganesh Ajjanagadde authored
Change to https for FFmpeg websites. Signed-off-by:
Ganesh Ajjanagadde <gajjanagadde@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
Fixes null pointer dereference Fixes CID1322330 Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer authored
The structure is copied around and that triggers warnings if it is uninitialized Fixes CID1322360 Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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