View Bug Details

IDProjectCategoryView StatusLast Update
0001199DCP-o-matic[All Projects] Bugspublic2018-02-12 20:55
ReportercarlAssigned To 
PrioritynormalSeverityminorReproducibilityhave not tried
Status newResolutionopen 
Product Version 
Target Version2.13.xFixed in Version 
Summary0001199: Audio analysis is slow
Description

mov file; mp4/prores/aac

TagsNo tags attached.
Estimated work requiredUnknown

Activities

Carsten

2018-02-09 02:47

manager   ~0002095

Can't confirm a general slowliness in 2.11.51, just opened a 50fps 13min MTS with ac3 and the full analysis incl. R128 took about 30s.

However, recently I sometimes see the analysis process indicator begin with negative percentages counting down - like from -450 through -320 through -80, and then from 0 upwards, and only then the progress bar grows up. What is that?

  • Carsten

Markus

2018-02-09 20:48

reporter   ~0002116

Tested it again with a .mov file containing a ProRes Video stream and a AAC 2 CH. audio track.
16GB file, Audio Stream 14MB, but take 3 min to analyse.
But this seems to be a FFMPEG issue, as Audacity nearly takes the same amount of time to load the audio.

Carsten

2018-02-09 23:45

manager   ~0002117

I'll try with AAC as well.

  • Carsten

Carsten

2018-02-10 01:04

manager   ~0002122

Last edited: 2018-02-10 01:11

View 3 revisions

6min37s MP4 with stereo AAC 44100Hz audio, analysis incl. R128 takes 15s.
Same format, about 1hr runtime, takes about 2min18s

4core HT 2.3GHz

Same performance as in 2.10.5

carl

2018-02-12 20:55

administrator   ~0002141

OK, I'll bump this to 2.13.x and maybe we can investigate more thoroughly there; sounds like there has probably been no regression.

Bug History

Date Modified Username Field Change
2018-02-09 01:51 carl New Bug
2018-02-09 01:52 carl Description Updated View Revisions
2018-02-09 02:47 Carsten Note Added: 0002095
2018-02-09 20:48 Markus Note Added: 0002116
2018-02-09 23:45 Carsten Note Added: 0002117
2018-02-10 01:04 Carsten Note Added: 0002122
2018-02-10 01:10 Carsten Note Edited: 0002122 View Revisions
2018-02-10 01:11 Carsten Note Edited: 0002122 View Revisions
2018-02-12 20:55 carl Target Version 2.12.0 => 2.13.x
2018-02-12 20:55 carl Note Added: 0002141