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IDProjectCategoryView StatusLast Update
0002540ardourbugspublic2020-04-19 20:13
Reporterthorwil Assigned Topaul  
PrioritynormalSeveritymajorReproducibilityalways
Status closedResolutionfixed 
PlatformLinuxOSUbuntuOS Version8.04
Product Version2.7.1 
Summary0002540: Region silent on playback
DescriptionA region with short x-fades at both sides is sometimes played back as if it was muted.
Steps To Reproduce- New session, import a mono file
- Cut it 2 times, move the pieces such the there is overlap between the middle and the other ones
- Select first region, resize it a little bit (keep an overlap)

Now the middle region should be silent on playback, but not necessarily every single time. The problem seems to be more "reliable" on playback.
Additional InformationIt seems the issue goes away if you save, quit and load again. Looks like you only have to resize the first region to have the problem restored.
TagsNo tags attached.

Relationships

has duplicate 0003035 closedpaul Parts of regions between two higher regions sometimes don't play 

Activities

deva

2009-02-18 09:59

reporter   ~0005727

I second that, but can elaborate a bit on the 'fixing'.

It appears that a muted clip can be unmuted by changing/moving the crossfades a bit.
I am not convinced that it has something to do with the length of the crossfade, but rather some mess-up in the order of the clips/crossfades.

Note, that the moving of the crossfade often results in the other clip (the clip crossfading in to/out of) being muted instead, thus propagating until a silent zone is encountered in the playlist.

The said fix of saving and reopening of the project has not worked for me.

Also I can report older projects (projects made with Ardour 2.5) suddenly spawned a lot of these crossfade mutes.

spanky

2009-03-31 10:11

reporter   ~0005849

this bug still happens in 2.8
it seems to happen sometimes when a region (1) overlaps a following region (2) and region (1) is on a higher layer. I also experienced the bug at region overlaps without a crossfade in between.

cth103

2010-05-02 11:49

administrator   ~0007744

I can't reproduce this with current SVN. Is it still a problem? If so, can you note which option in the "Options>Layering" mode is active when you are setting the bug up?

paul

2010-05-17 13:47

administrator   ~0007919

carl, its still a bug. someone on IRC got sort of close to a recipe, but never posted it here.

paul

2010-05-18 14:52

administrator   ~0007935

fixed in 2.0-ongoing (rev 7114) and will be in a soon-to-come 3.0 commit as well.

feedback would be appreciated.

deva

2010-05-27 18:21

reporter   ~0008073

Last edited: 2010-05-27 18:24

I tried to load one of my old sessions, that didn't have these mutes when I originally created them (with version 2.1 I think). And I'm afraid the bug is still there.
I tried to change the layering method, without any luck.
I tried to move the muted region to the top layer, and that seemed to work.
But regardless of layers... I still think that two regions cross-faded together should be played, both of them.

I'll be happy to supply the session file, but it is rather large, so I will only do so upon request.

paul

2010-05-27 18:31

administrator   ~0008074

the mutes are not "in" the session.

they are caused by a bug in deciding which regions need to be read during playback. the bug is semi-random (or will appear that way to the user) since it depends on where on timeline disk i/o takes place, which in turn depends on where you start playback from.

i have to say that i am pretty skeptical that the bug still exists, but i've been wrong about such things before. i know the code in 2.5 that started causing it, was able to replicate the bug fairly reliably, understood what was wrong, and fixed that. i may have missed another related case.

could you attach a screenshot of a relevant section of your session in which the unintended mute sometimes (or always) happens? thanks.

2010-05-27 18:48

 

mutebug.png (40,001 bytes)   
mutebug.png (40,001 bytes)   

deva

2010-05-27 18:48

reporter   ~0008076

Here you go. The muted regions are the ones I have selected.

paul

2010-05-27 19:17

administrator   ~0008079

please confirm the information in the "About" box. your screenshot is specifically the case that i was testing and fixed.

deva

2010-05-27 19:30

reporter   ~0008080

I am deeply sorry.
I have discovered and old 2.8.2 version on my system, and that one was the one in my path.
I have now tested it with the correct svn version, and it works like a charm.

paul

2010-05-27 20:57

administrator   ~0008083

see notes.

system

2020-04-19 20:13

developer   ~0021858

Issue has been closed automatically, by Trigger Close Plugin.
Feel free to re-open with additional information if you think the issue is not resolved.

Issue History

Date Modified Username Field Change
2009-02-01 16:12 thorwil New Issue
2009-02-18 09:59 deva Note Added: 0005727
2009-03-31 10:11 spanky Note Added: 0005849
2010-04-24 10:28 cth103 Category bugs => bugs2
2010-04-24 10:31 cth103 Category bugs2 => bugs
2010-05-02 11:49 cth103 Note Added: 0007744
2010-05-02 11:49 cth103 Status new => feedback
2010-05-17 13:47 paul Note Added: 0007919
2010-05-17 19:06 cth103 Relationship added has duplicate 0003035
2010-05-18 14:52 paul Note Added: 0007935
2010-05-27 18:21 deva Note Added: 0008073
2010-05-27 18:24 deva Note Edited: 0008073
2010-05-27 18:31 paul Note Added: 0008074
2010-05-27 18:48 deva File Added: mutebug.png
2010-05-27 18:48 deva Note Added: 0008076
2010-05-27 19:17 paul Note Added: 0008079
2010-05-27 19:30 deva Note Added: 0008080
2010-05-27 20:57 paul cost => 0.00
2010-05-27 20:57 paul Note Added: 0008083
2010-05-27 20:57 paul Status feedback => resolved
2010-05-27 20:57 paul Resolution open => fixed
2010-05-27 20:57 paul Assigned To => paul
2020-04-19 20:13 system Note Added: 0021858
2020-04-19 20:13 system Status resolved => closed