pinterf
MixAudio() produces stitches
MixAudio() produces stitches. When using MeGUI's downmix function
function c6_stereo(clip a) { fl = GetChannel(a, 1) fr = GetChannel(a, 2) fc = GetChannel(a, 3) lf = GetChannel(a, 4) sl = GetChannel(a, 5) sr = GetChannel(a, 6) fl_sl = MixAudio(fl, sl, 0.2929, 0.2929) fr_sr = MixAudio(fr, sr, 0.2929, 0.2929) fc_lf = MixAudio(fc, lf, 0.2071, 0.2071) l = MixAudio(fl_sl, fc_lf, 1.0, 1.0) r = MixAudio(fr_sr, fc_lf, 1.0, 1.0) return MergeChannels(l, r) }
It produces stitches. Additionally, the process speed is much lower than using official avs2.6 when MixAudio() is engaged. Here's the file that can reproduce the issue without difficulty. test.zip When using official avs2.6, I tried to find anything wrong, but it works well.
Besides, Output using megui's wrapper produces much more stitches than using avs2pipemod
-what is the speed difference you encounter (cacheing - if any - I suppose is totally different between classic and avs+) -what's your avspipemod commandline (to test similarly) My script now: function c6_stereo(clip a) { fl = GetChannel(a, 1) fr = GetChannel(a, 2) fc = GetChannel(a, 3) lf = GetChannel(a, 4) sl = GetChannel(a, 5) sr = GetChannel(a, 6) fl_sl = MixAudio(fl, sl, 0.2929, 0.2929) fr_sr = MixAudio(fr, sr, 0.2929, 0.2929) fc_lf = MixAudio(fc, lf, 0.2071, 0.2071) l = MixAudio(fl_sl, fc_lf, 1.0, 1.0) r = MixAudio(fr_sr, fc_lf, 1.0, 1.0) return MergeChannels(l, r) }
a=FFAudioSource("original_dts-hd.dts") v=BlankClip(length=10000000) AudioDub(v,c6_stereo(a))#.Info()
Weirder now, with,
function c6_stereo(clip a) { fl = GetChannel(a, 1) fr = GetChannel(a, 2) fc = GetChannel(a, 3) lf = GetChannel(a, 4) sl = GetChannel(a, 5) sr = GetChannel(a, 6) fl_sl = MixAudio(fl, sl, 0.2929, 0.2929) fr_sr = MixAudio(fr, sr, 0.2929, 0.2929) fc_lf = MixAudio(fc, lf, 0.2071, 0.2071) l = MixAudio(fl_sl, fc_lf, 1.0, 1.0) r = MixAudio(fr_sr, fc_lf, 1.0, 1.0) return MergeChannels(l, r) } a=FFAudioSource("original_dts-hd.dts") v=BlankClip(length=10000000) AudioDub(v,c6_stereo(a))#.Info()
It's good, AND speed is normal. HOWEVER, with,
function c6_stereo(clip a) { fl = GetChannel(a, 1) fr = GetChannel(a, 2) fc = GetChannel(a, 3) lf = GetChannel(a, 4) sl = GetChannel(a, 5) sr = GetChannel(a, 6) fl_sl = MixAudio(fl, sl, 0.2929, 0.2929) fr_sr = MixAudio(fr, sr, 0.2929, 0.2929) fc_lf = MixAudio(fc, lf, 0.2071, 0.2071) l = MixAudio(fl_sl, fc_lf, 1.0, 1.0) r = MixAudio(fr_sr, fc_lf, 1.0, 1.0) return MergeChannels(l, r) } a=LWLibavAudioSource("original_dts-hd.dts") v=BlankClip(length=10000000) AudioDub(v,c6_stereo(a))#.Info()
It comes again, with slow speed.
I will first investigate a bit into bit comparison of ff and lsmash alone for sake of consistency.
All tracks decoded fine, no differences found.
Comparing: "C:\Users\\Desktop\test_alone_ff.flac" "C:\Users\\Desktop\test_alone_lm.flac" Compared 3081216 samples. No differences in decoded data found. Channel peaks: 0.0781555 0.1070557 0.2019653 0.0453491 0.0375061 0.0741272
Total duration processed: 1:04.192 Time elapsed: 0:00.698 91.98x realtime
The above result is performed without any mixdown or process other than source filter.
avs2pipemod.exe -wav test.avs > testout.wav same behaviour as directly inputting avs in megui.
FFAudioSource() == LWLibavAudioSource() == GOOD FFAudioSource() + c6_stereo() != LWLibavAudioSource() + c6_stereo() FFAudioSource() + c6_stereo() == GOOD