mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-27 18:02:11 +00:00
fa8f060b75
The actual predictor value, set by the trellis code, never was written back into the variable that was written into the block header. This was accidentally removed inb304244b. This significantly improves the audio quality of the trellis case, which was plain broken sinceb304244b. Encoding IMA QT with trellis still actually gives a slightly worse quality than without trellis, since the trellis encoder doesn't use the exact same way of rounding as in adpcm_ima_qt_compress_sample and adpcm_ima_qt_expand_nibble. Fixes part of Ticket3701 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
5 lines
293 B
Plaintext
5 lines
293 B
Plaintext
15f895c2e7119714f94333e3214d8426 *tests/data/fate/acodec-adpcm-ima_qt-trellis.aiff
|
|
281252 tests/data/fate/acodec-adpcm-ima_qt-trellis.aiff
|
|
593d68369c87d4e3b7323b1bea3e9315 *tests/data/fate/acodec-adpcm-ima_qt-trellis.out.wav
|
|
stddev: 716.74 PSNR: 39.22 MAXDIFF:29633 bytes: 1058400/ 1058560
|