View Bug Details
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0001199||DCP-o-matic||[All Projects] Bugs||public||2018-02-09 01:51||2018-02-12 20:55|
|Priority||normal||Severity||minor||Reproducibility||have not tried|
|Target Version||2.13.x||Fixed in Version|
|Summary||0001199: Audio analysis is slow|
|Description||mov file; mp4/prores/aac|
|Tags||No tags attached.|
|Estimated work required||Unknown|
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?
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.
I'll try with AAC as well.
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
||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.|
|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|