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IDProjectCategoryView StatusDate SubmittedLast Update
0000799DCP-o-maticBugspublic2016-02-20 06:282021-01-08 00:35
Reporterscout72 Assigned Tocarl  
PrioritynormalSeverityminorReproducibilitysometimes
Status closedResolutionunable to reproduce 
Platform64 bitOSWindowsOS Version7
Product Version2.6.0 
Summary0000799: Mid Side decode not working on some projects - results in empty Channels 1 & 2 and ONLY sound in Ch3
Description

Only in some cases results in empty Channels 1 & 2 and ONLY sound in Ch3- have not been able to dertermine why only happens some times- but problem occurs with prores mov file - audio analysis works but after DCP creation the audio is only in Ch3 - have verified by bringing files into Audacity and verifying stereo audio file in MOV file creating from

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scout72

2016-02-20 17:50

reporter   ~0001141

additional notes- I am realizing that the mid-side decode is ADDING ch 1+2 for C with no gain change- resulting in clipped output - in previous version you could apply -6db gain - not seeing how to do this with the "mid side decode" function- also, why if clipping on channel 3 does it drop 1 and 2 and insert what i think is original track 1 into clipped track 3? Curious

scout72

2016-02-20 18:10

reporter   ~0001142

And if not clear form my last note- that is how to replicate the problem- use tracks where mid-side decode will create significant clipping

carl

2016-02-20 23:42

administrator   ~0001143

Hi, thanks for the report. There should be a 6dB cut on C, so the M/S decoder should not clip if the input does not clip.

Can you send any example files that cause the problem?

One reason for channel only on C would be a source file that has the same thing on both L and R... M/S would "decode" that to signal on C with nothing on L nor R.

Bug History

Date Modified Username Field Change
2016-02-20 06:28 scout72 New Bug
2016-02-20 17:50 scout72 Note Added: 0001141
2016-02-20 18:10 scout72 Note Added: 0001142
2016-02-20 23:42 carl Note Added: 0001143
2016-02-20 23:42 carl Assigned To => carl
2016-02-20 23:42 carl Status new => feedback
2019-10-11 09:02 carl Status feedback => resolved
2019-10-11 09:02 carl Resolution open => unable to reproduce
2021-01-08 00:35 carl Status resolved => closed