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release/2.6
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release/3.1
release/3.2
release/3.3
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release/4.0
release/4.1
release/4.2
release/4.3
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n2.2-rc2
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ffmpeg-0.6.3
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n0.5.5
N
2 Commits (093e06f2d6871a94e673f0ec067873f9d745be3d)
2 Commits (093e06f2d6871a94e673f0ec067873f9d745be3d)
| Author | SHA1 | Message | Date |
|---|---|---|---|
 Muhammad Faiz
|
b8c6e5a661 |
swresample: add exact_rational option
give high quality resampling
as good as with linear_interp=on
as fast as without linear_interp=on
tested visually with ffplay
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000, showcqt=gamma=5"
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000:linear_interp=on, showcqt=gamma=5"
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000:exact_rational=on, showcqt=gamma=5"
slightly speed improvement
for fair comparison with -cpuflags 0
audio.wav is ~ 1 hour 44100 stereo 16bit wav file
ffmpeg -i audio.wav -af aresample=osr=48000 -f null -
old new
real 13.498s 13.121s
user 13.364s 12.987s
sys 0.131s 0.129s
linear_interp=on
old new
real 23.035s 23.050s
user 22.907s 22.917s
sys 0.119s 0.125s
exact_rational=on
real 12.418s
user 12.298s
sys 0.114s
possibility to decrease memory usage if soft compensation is ignored
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
|
9 years ago |
 Matthieu Bouron
|
f6265a5cbc | swresample/arm: add ff_resample_common_apply_filter_{x4,x8}_{float,s16}_neon | 9 years ago |