Hi,
Upon trying to stabilize and then render a short video (2mins) under Kdenlive 19.12.3 (latest) I ran into a nasty problem: Rendering crashes with an error message

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No LADSPA plugins were found! Check your LADSPA_PATH environment variable.
[mp4 @ 0x7f8cfc000f00] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead. [mp4 @ 0x7f8cfc000f00] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.


Here's what I did:

• Import the video (~2min) - mp4 taken on a smartphone
• right-click > Clip jobs > stabilize: This takes about two minutes and I get a file of "filename.mp4.mlt"
• I then pull the stabilized version of the video, i.e. the one with "mp4.mlt" to the timeline
• Finally I click "Render" > MP4, leaving everything else set to default.
  Rendering runs for about two minutes and the finally crashes with the error message above.

Here's what I've tried and found out so far:

• It's independent of the original video. Tried with different videos - same story
• Work with the non-stabilized version of the video -> Rendering works
• Pull the stabilized version of the video (...mp4.mlt) to the timeline > select "Ungroup" in the Timeline. This splits audio and video. Then I delete the audio part so that we've got only the video left. When rendering this "video-only-video" rendering works - no crashes.

Maybe this has nothing to do with the problem I'm facing but I also discovered that with every start of kdenlinve I get tons of messages/warnings written to the console - here's an excerpt:

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$ ./kdenlive-19.12.3-x86_64.appimage
No LADSPA plugins were found!

Check your LADSPA_PATH environment variable.
WARNING : Fails to parse  "avcolour_space"
WARNING : Fails to parse  "avcolor_space"
WARNING : Fails to parse  "avdeinterlace"
WARNING : Fails to parse  "swscale"
"avfilter.abench" is blacklisted
"avfilter.acompressor" is blacklisted
"avfilter.adelay" is blacklisted
"avfilter.aecho" is blacklisted
"avfilter.aemphasis" is blacklisted
...
"videostab" is blacklisted
"videostab2" is blacklisted
...
Warning: duplicate custom definition of effect "frei0r.alpha0ps" found. Only last one will be considered. Duplicate found in "/tmp/.mount_kdenlilCVgcC/usr/share/kdenlive/effects/frei0r_alpha0ps.xml"
Warning: duplicate custom definition of effect "frei0r.balanc0r" found. Only last one will be considered. Duplicate found in "/tmp/.mount_kdenlilCVgcC/usr/share/kdenlive/effects/frei0r_balanc0r.xml"
...
"frei0r.xfade0r" is blacklisted
Loading bin playlist...
//////////////////////
Trying to construct 5 tracks.
////////////////////////////////
SUSPICIOUS: we weren't expecting a producer when parsing the timeline


For my environment:
Ubuntu (Linux) 18.04 64bit patched to the day
Kdenlinve 19.12.3 (AppImage).

Thanks much in advance for any clue...

Ladspa is missing. Kdenlive needs minimum Ubuntu 19.04, better 20.04.

Merlimau wrote:Ladspa is missing. Kdenlive needs minimum Ubuntu 19.04, better 20.04.

Hi,
Thanks much for the hint - just tried the latest Kdenlive 20.04.0 (AppImage) a freshly installed Ubuntu Mate 20.04 - no "LADSPA"-errors any more