Movie Capture crashes while converting images to mp4

I am trying to create a movie out of a simulation with 60frames/s and 10000 frames. The capturing works until finished without complaints. I can see that the images in the destination folder. While processing and converting the images into an mp4, the process suddenly stops and Isaac Sim shuts down without any helpful message in the log. When I start Isaac Sim again and repeat the procedure, the crash happens again.

This is the end of the log:

2021-11-25 16:36:56 [3,018,401ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2139.png"
2021-11-25 16:36:56 [3,018,435ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2140.png"
2021-11-25 16:36:56 [3,018,469ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2141.png"
2021-11-25 16:36:56 [3,018,504ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2142.png"
2021-11-25 16:36:56 [3,018,541ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2143.png"
2021-11-25 16:36:56 [3,018,577ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2144.png"
2021-11-25 16:36:56 [3,018,615ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2145.png"
2021-11-25 16:36:56 [3,018,656ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2146.png"
2021-11-25 16:36:56 [3,018,699ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2147.png"
2021-11-25 16:36:56 [3,018,738ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2148.png"
2021-11-25 16:36:56 [3,018,781ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2149.png"
2021-11-25 16:36:56 [3,018,825ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2150.png"
2021-11-25 16:36:56 [3,018,868ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2151.png"
2021-11-25 16:36:56 [3,018,937ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2152.png"
2021-11-25 16:36:57 [3,019,264ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2153.png"
2021-11-25 16:37:03 [3,025,601ms] [Warning] [omni.videoencoding.plugin] Loading frame from file: "/home/brunovetter/Documents/Kit/shared/capture/test1a_frames/test1a.2154.png"

FYI, Blender has no problems to convert the png files from Isaac Sim to mp4. There seems to be no corrupt images.