Re: Windows, “play” bug with space key

Eugen Mohr eugen.mohr at
Thu Aug 2 17:39:57 BST 2018

Found this Error message. I had a Kdenlive crash as I tested the 
timeline. libmlt-6.dll seems involved.

Faulting application name: kdenlive.exe, Version:, Zeitstempel: 
Faulting module name:  libmlt-6.dll, Version:, Zeitstempel: 
Exception code: 0xc0000005
Fault offset: 0x000000000001cf10
Faulting process id:  0x175c
Faulting application start time: 0x01d42830f80a524e
Faulting application path: E:\Update\Kdenlive\Kdenlive-18.04.1d\kdenlive.exe
Faulting module path: E:\Update\Kdenlive\Kdenlive-18.04.1d\libmlt-6.dll
Report Id: d3ffe399-9424-11e8-8334-643150372fa0

- System
   - Provider
    [ Name]  Application Error
   - EventID 1000
    [ Qualifiers]  0
    Level 2
    Task 100
    Keywords 0x80000000000000
   - TimeCreated
    [ SystemTime]  2018-07-30T18:17:34.000000000Z
    EventRecordID 131519
    Channel Application
     Computer Customer-PC

- EventData

Am 01.08.2018 um 19:46 schrieb Eugen Mohr:
> Is there some interaction between MLT and audio to block playing?
> When I move the sliders back and forth in an effect (doesnt' matter 
> which one) I see on the VU-Meter of the project monitor the white peek 
> line each time goes down a bit until is gone on the left site.
> Am 01.08.2018 um 12:00 schrieb Eugen Mohr:
>> I made further tests:
>> Open Kdenlive 18.04.1d on Windows 7. Load a project. Start playing 
>> with hit space bar. Stop playing hit space bar again. Then playing 
>> works only if I hit space bar and the arrow key right.
>> If the timeline contains 2 clips above each other (on video 1+2) and 
>> they are connected with a composition playing works more smooth. Even 
>> after hitting space bar several times starts/stops the video correctly.
>> After 27 times hitting space and arrow right it appears a time lag 
>> between 2-3 seconds to react on hitting the space bar or click the 
>> play button. After this 27 times I can only play with CTRL-SPACE and 
>> while the video is playing clicking into the timeline to other 
>> positions. Or while play is off I press constantly the arrow key 
>> right for playing. And only when play is off I can click the play 
>> heat onto a new position.
>> Am 27.05.2018 um 10:16 schrieb Eugen Mohr:
>>> Maybe I found the “root cause” of the “play” bug in Windows.
>>> It has something to do with the Processing Threads in the 
>>> Environment menu.
>>> Processing Threads = 1 -> start/stop with space doesn’t work. Frame 
>>> by frame with the arrow key work. All other key commands work.
>>> Processing Threads = 2 or bigger -> start/stop with space work! But: 
>>> frame by frame with the arrow key and all other key commands doesn’t 
>>> work!
>>> Maybe something to do with the type of compiling for Windows?
>>> Merlimau

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