I’m using KDEnlive 25.08 on a Kubuntu 25.10 box, and I have a weird problem with recording voiceovers. I create a track, hit record and it seems normal, but in almost all cases (not 100%, which makes it even stranger), just when I stop the recording, the recording collapses to almost nothing. It is the recording itself, I can open it with VLC, and it doesn’t contain anything intelligible.
When I start KDEnlive from the terminal, I see this:
start recording 34
qt.multimedia.ffmpeg.encoder: Recording new media with muxer WAV / WAVE (Waveform Audio) to "/home/kjetil/Videos/capture0028.wav" with format: QMediaFormat::Wave, QMediaFor
mat::AudioCodec::Wave, QMediaFormat::VideoCodec::Unspecified
pos: 89 out: 46235
:::: MEDIA CAPTURE PAUSED!!!!
/////////// createClipFromFile "/home/kjetil/Videos/capture0028.wav" "-1"
=== GOT DROPPED MIME: "audio/vnd.wave"
/////////// final xml "<producer>\n <property name=\"resource\">/home/kjetil/Videos/capture0028.wav</property>\n</producer>\n"
################### ProjectClip::setproducer #################
################### ClipController::updateProducer
################### ClipController::addmasterproducer FOR: "33"
------------
FRAME HAS AUDIO: true / false
------------------------
callback "33" 34 , MAXIMUM SPACE: 0
// GET TIMELINE PROD FOR STREAM: 0
Generating audio levels for stream 0 of "/home/kjetil/Videos/capture0028.wav" using libav
==== BUILT CLIP STREAM: 0
REGISTRATION 39 ptr count 7
Audio levels generation took 0.006 s ( 4833.33 frames/s)
Saving audio levels to cache "/home/kjetil/Videos/1773753212966/audiothumbs/2d313ebfc8e0c354f682783179e87d2d_0_60_audio.dat"
qml: loaded clip: 89 , ID: 39 , index: 5 , TYPE: 1
qml: loaded clip with Astream: 0
qrc:/qt/qml/org/kde/kdenlive/ClipAudioThumbs.qml:84:9: QML TimelineWaveform: Binding loop detected for property "waveOutPoint":
qrc:/qt/qml/org/kde/kdenlive/ClipAudioThumbs.qml:97:13
// CLEARING REC MANAGER
But I didn’t hit pause, I hit stop, so it appears that something is wrong there, but I’m not sure it is that. I have been experimenting with various combinations of audio libraries too, had a chat with Claude also, but to no avail. Any humans have ideas?