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ffmpeg / tests / ref / acodec @ 35d3d44a

Name Size Revision Age Author Comment
ac3_fixed 94 Bytes 79ee8977 over 9 years Justin Ruggles ac3enc: correct the flipped sign in the ac3_fix...
adpcm_ima_qt 252 Bytes 35d3d44a over 9 years Baptiste Coudurier adpcmenc: fix QT IMA ADPCM encoder Signed-off-b...
adpcm_ima_wav 253 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...
adpcm_ms 246 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...
adpcm_swf 249 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...
adpcm_yam 249 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...
alac 234 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...
flac 236 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...
g726 233 Bytes c7d89948 about 10 years Justin Ruggles Set a constant frame size for encoding G.726 au...
mp2 298 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...
pcm 4.27 KB 91819763 over 9 years Anton Khirnov matroskaenc: don't write an empty Cues element.
wmav1 237 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...
wmav2 237 Bytes c43d77c1 over 10 years Måns Rullgård tiny_psnr: skip wav headers on input files The...

Latest revisions

# Date Author Comment
35d3d44a 05/08/2011 11:15 AM Baptiste Coudurier

adpcmenc: fix QT IMA ADPCM encoder
Signed-off-by: Michael Niedermayer <>

b3d5a4b0 05/08/2011 11:13 AM Baptiste Coudurier

adpcmdec: Fix QT IMA ADPCM decoder
Signed-off-by: Michael Niedermayer <>

79ee8977 04/26/2011 09:19 PM Justin Ruggles

ac3enc: correct the flipped sign in the ac3_fixed encoder

91819763 04/07/2011 04:11 PM Anton Khirnov

matroskaenc: don't write an empty Cues element.

e05a3ac7 04/04/2011 12:59 AM Justin Ruggles

ac3enc: select bandwidth based on bit rate, sample rate, and number of
full-bandwidth channels.

This reduces high-frequency artifacts and improves the quality of the lower
frequency audio at low bit rates.

79997def 04/03/2011 06:01 PM Mans Rullgard

ac3enc: use generic fixed-point mdct

This makes the AC3 encoder use the shared fixed-point MDCT rather
than its own implementation. The checksum changes are due to
different rounding in the MDCT.

Signed-off-by: Mans Rullgard <>

e6e98234 03/23/2011 01:08 AM Justin Ruggles

Add apply_window_int16() to DSPContext with x86-optimized versions and use it
in the ac3_fixed encoder.

323e6fea 03/14/2011 12:45 PM Justin

ac3enc: do not right-shift fixed-point coefficients in the final MDCT stage.

This increases the accuracy of coefficients, leading to improved quality.
Rescaling of the coefficients to full 25-bit accuracy is done rather than
offsetting the exponent values. This requires coefficient scaling to be done...

5b54d4b3 02/16/2011 11:39 PM Justin Ruggles

ac3enc: fix bug in stereo rematrixing decision.

The rematrixing strategy reuse flags are not reset between frames, so they
need to be initialized for all blocks, not just block 0.

Signed-off-by: Mans Rullgard <>

50d71404 02/15/2011 09:40 PM Justin Ruggles

ac3enc: change default floor code to 7.

This is to match the value in every (E-)AC-3 file from commercial sources.
It has a negligible effect on audio quality.

Signed-off-by: Mans Rullgard <>

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