Video Sequencer Preview with Prefetch Frames crashes inside Meta Strip #94768

New Issue

Benjamin Swart · 2022-01-09T15:12:00+01:00

Benjamin Swart commented

2022-01-09 15:12:00 +01:00

System Information
Operating system: Linux-5.13.0-23-generic-x86_64-with-glibc2.34 64 Bits
Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.86

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: f1cca30557
Worked: Unknown, broken in 2.90 - 2.93, 2.81 crashes even earlier

Short description of error
The Video Sequencer Preview area causes a crash when rendering the inside of a Meta Strip with Prefetch Frames enabled, if there is a scene clip inside the sequencer.
The crash sometimes doesn't occur after moving the clips around.

Exact steps for others to reproduce the error

Create a new file using the Video Editing template.
Add a Layout workspace.
Create a second scene. I'll call the scenes VSE and 3D.
Go to the 3D scene in the Layout workspace and add a camera if there isn't one.
Go to the VSE scene in the Video Editing workspace and add the scene using Add>Scene>3D.
Add a Color clip using Add>Color.
Turn the Color clip into a Meta Strip using Strip>Make Meta Strip.
Open the properties pane in the Preview area and enable View>View Setting>Prefetch Frames. Your file should now be identical to the attached one.
Use Strip>Toggle Meta. Blender should crash shortly.

Files
Test .blender file:
Crash 2.blend
System info:
system-info.txt
Crash file:
Crash.crash.txt

**System Information** Operating system: Linux-5.13.0-23-generic-x86_64-with-glibc2.34 64 Bits Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.86 **Blender Version** Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `f1cca30557` Worked: Unknown, broken in 2.90 - 2.93, 2.81 crashes even earlier **Short description of error** The Video Sequencer Preview area causes a crash when rendering the inside of a Meta Strip with Prefetch Frames enabled, if there is a scene clip inside the sequencer. The crash sometimes doesn't occur after moving the clips around. **Exact steps for others to reproduce the error** 1. Create a new file using the Video Editing template. 2. Add a Layout workspace. 3. Create a second scene. I'll call the scenes VSE and 3D. 4. Go to the 3D scene in the Layout workspace and add a camera if there isn't one. 5. Go to the VSE scene in the Video Editing workspace and add the scene using Add>Scene>3D. 6. Add a Color clip using Add>Color. 7. Turn the Color clip into a Meta Strip using Strip>Make Meta Strip. 8. Open the properties pane in the Preview area and enable View>View Setting>Prefetch Frames. Your file should now be identical to the attached one. 9. Use Strip>Toggle Meta. Blender should crash shortly. **Files** Test .blender file: [Crash 2.blend](https://archive.blender.org/developer/F12797468/Crash_2.blend) System info: [system-info.txt](https://archive.blender.org/developer/F12797467/system-info.txt) Crash file: [Crash.crash.txt](https://archive.blender.org/developer/F12797470/Crash.crash.txt)

Benjamin Swart commented

2022-01-09 15:12:00 +01:00

Added subscriber: @Svizel_pritula

Andy Collier commented

2022-01-10 02:42:50 +01:00

Added subscriber: @AndyBCX

Pratik Borhade commented

2022-01-10 08:03:52 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-01-10 08:03:52 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Pratik Borhade commented

2022-01-10 08:03:52 +01:00

Thanks for the report. I can reproduce on current master

blender.exe         :0x00007FF6D0920FF0  bli_windows_system_backtrace_stack_thread C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\system_win32.c:233
blender.exe         :0x00007FF6D0920070  BLI_windows_system_backtrace_stack C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\system_win32.c:320
blender.exe         :0x00007FF6D091FA40  BLI_system_backtrace C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\system_win32.c:386
blender.exe         :0x00007FF6D0924860  _BLI_assert_print_backtrace C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\BLI_assert.c:50
blender.exe         :0x00007FF6CED0DF70  blender::deg::DepsgraphNodeBuilder::add_id_node C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\deg_builder_nodes.cc:161
blender.exe         :0x00007FF6CED1C6D0  blender::deg::DepsgraphNodeBuilder::build_scene_render C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\deg_builder_nodes_scene.cc:36
blender.exe         :0x00007FF6CECC4E80  blender::deg::RenderBuilderPipeline::build_nodes C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\pipeline_render.cc:36
blender.exe         :0x00007FF6CECBD930  blender::deg::AbstractBuilderPipeline::build_step_nodes C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\pipeline.cc:73
blender.exe         :0x00007FF6CECBD6F0  blender::deg::AbstractBuilderPipeline::build C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\pipeline.cc:52
blender.exe         :0x00007FF6CEC6AFB0  DEG_graph_build_for_render_pipeline C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\depsgraph_build.cc:271
blender.exe         :0x00007FF6D077FE40  render_init_depsgraph C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\render\intern\pipeline.c:1777
blender.exe         :0x00007FF6D07799D0  RE_RenderFrame C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\render\intern\pipeline.c:1837
blender.exe         :0x00007FF6CE1C9C60  seq_render_scene_strip C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1517
blender.exe         :0x00007FF6CE1C5370  do_render_strip_uncached C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1665
blender.exe         :0x00007FF6CE1CAA00  seq_render_strip C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1738
blender.exe         :0x00007FF6CE1CAC40  seq_render_strip_stack C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1870
blender.exe         :0x00007FF6CE1C3F50  SEQ_render_give_ibuf C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1954
blender.exe         :0x00007FF6CE1BAC30  seq_prefetch_frames C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\prefetch.c:495
blender.exe         :0x00007FF6D0921620  tslot_thread_start C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\threads.cc:221
blender.exe         :0x00007FF6D0C84510  _ptw32_threadStart
ucrtbased.dll       :0x00007FFA9CFD5340  register_onexit_function
KERNEL32.DLL        :0x00007FFAE1DC7020  BaseThreadInitThunk
ntdll.dll           :0x00007FFAE3022630  RtlUserThreadStart```

Thanks for the report. I can reproduce on current master ```lines=10 blender.exe :0x00007FF6D0920FF0 bli_windows_system_backtrace_stack_thread C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\system_win32.c:233 blender.exe :0x00007FF6D0920070 BLI_windows_system_backtrace_stack C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\system_win32.c:320 blender.exe :0x00007FF6D091FA40 BLI_system_backtrace C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\system_win32.c:386 blender.exe :0x00007FF6D0924860 _BLI_assert_print_backtrace C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\BLI_assert.c:50 blender.exe :0x00007FF6CED0DF70 blender::deg::DepsgraphNodeBuilder::add_id_node C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\deg_builder_nodes.cc:161 blender.exe :0x00007FF6CED1C6D0 blender::deg::DepsgraphNodeBuilder::build_scene_render C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\deg_builder_nodes_scene.cc:36 blender.exe :0x00007FF6CECC4E80 blender::deg::RenderBuilderPipeline::build_nodes C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\pipeline_render.cc:36 blender.exe :0x00007FF6CECBD930 blender::deg::AbstractBuilderPipeline::build_step_nodes C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\pipeline.cc:73 blender.exe :0x00007FF6CECBD6F0 blender::deg::AbstractBuilderPipeline::build C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\builder\pipeline.cc:52 blender.exe :0x00007FF6CEC6AFB0 DEG_graph_build_for_render_pipeline C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\depsgraph\intern\depsgraph_build.cc:271 blender.exe :0x00007FF6D077FE40 render_init_depsgraph C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\render\intern\pipeline.c:1777 blender.exe :0x00007FF6D07799D0 RE_RenderFrame C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\render\intern\pipeline.c:1837 blender.exe :0x00007FF6CE1C9C60 seq_render_scene_strip C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1517 blender.exe :0x00007FF6CE1C5370 do_render_strip_uncached C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1665 blender.exe :0x00007FF6CE1CAA00 seq_render_strip C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1738 blender.exe :0x00007FF6CE1CAC40 seq_render_strip_stack C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1870 blender.exe :0x00007FF6CE1C3F50 SEQ_render_give_ibuf C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\render.c:1954 blender.exe :0x00007FF6CE1BAC30 seq_prefetch_frames C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\sequencer\intern\prefetch.c:495 blender.exe :0x00007FF6D0921620 tslot_thread_start C:\Users\Pratik\Desktop\BlenderOSP\blender\source\blender\blenlib\intern\threads.cc:221 blender.exe :0x00007FF6D0C84510 _ptw32_threadStart ucrtbased.dll :0x00007FFA9CFD5340 register_onexit_function KERNEL32.DLL :0x00007FFAE1DC7020 BaseThreadInitThunk ntdll.dll :0x00007FFAE3022630 RtlUserThreadStart```

blender-admin commented

2022-01-11 06:12:15 +01:00

This issue was referenced by f2fb9a0c59

This issue was referenced by f2fb9a0c59ab64358301e4d98ba35b5f122a0eaf

Richard Antalik commented

2022-01-11 06:18:40 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Richard Antalik closed this issue

2022-01-11 06:18:40 +01:00

Richard Antalik self-assigned this 2022-01-11 06:18:40 +01:00

blender-admin commented

2022-01-17 13:07:21 +01:00