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kdenlive: cannot render "selected zone" #223654

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Zahrun opened this issue Mar 28, 2023 · 4 comments
Closed

kdenlive: cannot render "selected zone" #223654

Zahrun opened this issue Mar 28, 2023 · 4 comments
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0.kind: bug Something is broken

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@Zahrun
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Zahrun commented Mar 28, 2023 •
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Describe the bug

When rendering "selected zone" instead of "full project", the rendering crashes.

Steps To Reproduce

Steps to reproduce the behavior:

  1. Run kdenlive from terminal, otherwise it crashes kdenlive: starting from application menu crashes #223649
  2. Import some clip
  3. Put the clip in the timeline
  4. Select a part of the timeline
  5. "Project" menu --> "Render..."
  6. Check "Selected zone"
  7. Press "Render to File"

Expected behavior

Selected zone renders.

Logs

Logs in UI

Rendering of /home/aroun/project.mp4 crashed

[mp4 @ 0x7fa5d4000f40] Timestamps are unset in a packet for stream 1. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly [mp4 @ 0x7fa5d4000f40] Encoder did not produce proper pts, making some up.

Logs in systemd-coredump

Fold/Unfold 
29.03.2023 04:15:03:348	systemd	Started Process Core Dump (PID 201011/UID 0).
29.03.2023 04:15:03:909	systemd-coredump	Process 200927 (.melt-7-wrapped) of user 1000 dumped core.

Module libncursesw.so.6 without build-id.
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Module libopencv_barcode.so.407 without build-id.
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Module libopencv_alphamat.so.407 without build-id.
Module libopencv_stitching.so.407 without build-id.
Module libopencv_gapi.so.407 without build-id.
Module facebl0r.so without build-id.
Module libvorbisenc.so.2 without build-id.
Module libFLAC.so.12 without build-id.
Module libsndfile.so.1 without build-id.
Module libpulsecommon-16.1.so without build-id.
Module libpulse.so.0 without build-id.
Module libpulse-simple.so.0 without build-id.
Module libasound.so.2 without build-id.
Module libmltrtaudio.so without build-id.
Module libogg.so.0 without build-id.
Module libvorbis.so.0 without build-id.
Module libcap.so.2 without build-id.
Module libsystemd.so.0 without build-id.
Module libpcre2-8.so.0 without build-id.
Module libz.so.1 without build-id.
Module libgcc_s.so.1 without build-id.
Module libstdc++.so.6 without build-id.
Module libdbus-1.so.3 without build-id.
Module libopus.so.0 without build-id.
Module libcelt0.so.2 without build-id.
Module libxml2.so.2 without build-id.
Module libjack.so.0 without build-id.
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Module .melt-7-wrapped without build-id.
Stack trace of thread 200928:
#0  0x00007fb6aa6fa5ed _ZN7QObject10disconnectEPKS_PKcS1_S3_ (libQt5Core.so.5 + 0x2fa5ed)
#1  0x00007fb6a63959e8 n/a (libQt5DBus.so.5 + 0x279e8)
#2  0x00007fb6a6387527 n/a (libQt5DBus.so.5 + 0x19527)
#3  0x00007fb6aa4d55fc n/a (libQt5Core.so.5 + 0xd55fc)
#4  0x00007fb6b8e88e86 start_thread (libc.so.6 + 0x88e86)
#5  0x00007fb6b8f0fd30 __clone3 (libc.so.6 + 0x10fd30)

Stack trace of thread 200927:
#0  0x00007fb6b8e857d5 __futex_abstimed_wait_common (libc.so.6 + 0x857d5)
#1  0x00007fb6b8e88202 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x88202)
#2  0x00007fb6aa4db50b _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdb50b)
#3  0x00007fb6aa4d52c1 _ZN7QThread4waitE14QDeadlineTimer (libQt5Core.so.5 + 0xd52c1)
#4  0x00007fb6a6387320 n/a (libQt5DBus.so.5 + 0x19320)
#5  0x00007fb6a63873b9 n/a (libQt5DBus.so.5 + 0x193b9)
#6  0x00007fb6b8e400c5 __run_exit_handlers (libc.so.6 + 0x400c5)
#7  0x00007fb6b8e4024e exit (libc.so.6 + 0x4024e)
#8  0x00007fb6b8e29255 __libc_start_call_main (libc.so.6 + 0x29255)
#9  0x00007fb6b8e29309 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x29309)
#10 0x0000000000404d15 _start (.melt-7-wrapped + 0x4d15)

Stack trace of thread 200929:
#0  0x00007fb6b8f02759 __poll (libc.so.6 + 0x102759)
#1  0x00007fb6aeaeed12 _xcb_conn_wait (libxcb.so.1 + 0xdd12)
#2  0x00007fb6aeaf0fea xcb_wait_for_event (libxcb.so.1 + 0xffea)
#3  0x00007fb6a67891f0 n/a (libQt5XcbQpa.so.5 + 0x691f0)
#4  0x00007fb6aa4d55fc n/a (libQt5Core.so.5 + 0xd55fc)
#5  0x00007fb6b8e88e86 start_thread (libc.so.6 + 0x88e86)
#6  0x00007fb6b8f0fd30 __clone3 (libc.so.6 + 0x10fd30)
ELF object binary architecture: AMD x86-64

29.03.2023 04:15:03:946	systemd	systemd-coredump@239-201011-0.service: Deactivated successfully.

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@turion

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Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.1.21, NixOS, 23.05 (Stoat), 23.05pre468444.4bb072f0a8b`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.13.3`
 - channels(aroun): `""`
 - channels(root): `"nixos"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`
@Zahrun Zahrun added the 0.kind: bug Something is broken label Mar 28, 2023
@Zahrun
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Zahrun commented Mar 28, 2023 •
edited
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Actually, the rendering happens even though it says that it crashed. To select the area to export, here are the methods.
The dump seems to point to libQt5DBus.so.5, just like in #220168, which is reported to Qt at https://bugreports.qt.io/browse/QTBUG-112258

@Zahrun Zahrun mentioned this issue Mar 28, 2023
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@turion
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turion commented Apr 14, 2023

Also, this one I can't reproduce.

@Zahrun
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Zahrun commented Apr 25, 2023 •
edited
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This one is still happening in 23.04.0 but I think it is exactly the same race condition as in #220168, https://bugs.kde.org/show_bug.cgi?id=467696, and https://bugreports.qt.io/browse/QTBUG-112258
Some people can and some people can't reproduce it. However reproducible NixOS might be, maybe this is kernel/hardware dependent or something

@Zahrun
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Zahrun commented Mar 13, 2024

Fixed

@Zahrun Zahrun closed this as completed Mar 13, 2024
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