ffmpeg/tests
Claudio Freire 59216e0525 AAC Encoder: clipping avoidance
Avoid clipping due to quantization noise to produce audible
artifacts, by detecting near-clipping signals and both attenuating
them a little and encoding escape-encoded bands (usually the
loudest) rounding towards zero instead of nearest, which tends to
decrease overall energy and thus clipping.

Currently fate tests measure numerical error so this change makes
tests using asynth (which are near clipping) report higher error
not less, because of window attenuation. Yet, they sound better,
not worse (albeit subtle, other samples aren't subtle at all).
Only measuring psychoacoustically weighted error would make for
a representative test, so that will be left for a future patch.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-07-27 19:13:48 +02:00
..
api api-h264-test: build with another api test 2015-06-29 02:49:32 +02:00
checkasm Merge commit '65c14801527068fcaf729eeffc142ffd4682a21a' 2015-07-27 12:27:12 +02:00
fate AAC Encoder: clipping avoidance 2015-07-27 19:13:48 +02:00
filtergraphs fate: add test for mergeplanes filter 2015-07-18 01:55:44 +00:00
ref swscale: ayuv64le output support 2015-07-24 03:45:48 +00:00
audiogen.c
base64.c
copycooker.sh
fate-run.sh fate: Test pullup and fieldmatch with 5 instead of 1 frame 2015-05-12 12:29:47 +02:00
fate-valgrind.supp
fate.sh
ffserver-regression.sh
ffserver.conf
ffserver.regression.ref
lavf-regression.sh
Makefile Merge commit 'c9f8cfb6d9b34f3c51f1b7152c4dc3f2f8724dc4' 2015-07-18 02:39:01 +02:00
md5.sh
reference.pnm
regression-funcs.sh
rotozoom.c
test.ffmeta
tiny_psnr.c
tiny_ssim.c
utils.c
videogen.c