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ffmpeg-0.6.3
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${ noResults }
10 Commits (005d058f4230f3207ebcf1131df7426d4f57392f)
| 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 |
Ganesh Ajjanagadde
|
1bed09a30e |
swresample: allow double precision beta value for the Kaiser window
Kaiser windows inherently don't require beta to be an integer. This was an arbitrary restriction. Moreover, soxr does not require it, and in fact often estimates beta to a non-integral value. Thus, this patch allows greater flexibility for swresample clients. Micro version is updated. Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com> Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com> |
9 years ago |
Rob Sykes
|
c70c6be225 |
swresample: soxr implementation for swr_get_out_samples()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
Michael Niedermayer
|
4d00860ac7 |
swresample: Add prefix to soxr_resampler
also move declaration to header Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
|
Rob Sykes
|
4b6f225374 |
swresample/soxr_resample: fix error handling
Fixes CID1257659 Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
10 years ago |
Ronald S. Bultje
|
b785c62681 |
swr: handle initial negative sample index outside DSP function.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
11 years ago |
Rob Sykes
|
dc666d360b |
soxr: libsoxr 0.1.1 support
Libsoxr 0.1.1 will be out very soon; no changes planned beyond what's currently in git. It includes a couple of fixes (not affecting FFmpeg's current usage) and a minor API change (but remains ABI compatible). Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
12 years ago |
|
Rob Sykes
|
03d38ee207 |
soxr_resample: soxr API parameter rename
Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
12 years ago |
|
Rob Sykes
|
f2957adb23 |
soxr_resample: Correct email address
Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
12 years ago |
|
Rob Sykes
|
801b315729 |
swr: Add SOX resampler support
Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
12 years ago |