Version 1.5.8. now there that fixes the video parameters and changes layout a bit.
I'm not familiar with the EDHM mod. I've not been very active in game for a couple of years (or more) so if other tools have come along to do similar, it's news to me. The SSChanger app should work regardless of what application is used to get the screenshots or videos, you just need to tell it which directory to look in for the files to arrive, file type, renaming parameters etc.
Here's the very quick log I just did, which shows I need to look at why it gives the message about about 'stopped watching for new files'. I can't recall what I did there
30/10/2022 17:13:06 - Detected that Elite: Dangerous 64bit is running.
30/10/2022 17:13:06 - Ready to start
30/10/2022 17:13:09 - Stopped watching for new files
30/10/2022 17:13:15 - Watching for new images at C:\Users\johng\Pictures\Frontier Developments\Elite Dangerous
30/10/2022 17:13:15 - Watching for new videos at C:\Users\johng\Videos\Elite Dangerous
30/10/2022 17:13:15 - Logfile: C:\Users\johng\Saved Games\Frontier Developments\Elite Dangerous\Journal.2022-10-30T161802.01.log
30/10/2022 17:13:15 - System found: Chuelchs
30/10/2022 17:13:15 - Body found: Chuelchs AB
30/10/2022 17:13:26 - Valid image created: C:\Users\johng\Pictures\Frontier Developments\Elite Dangerous\Screenshot_0012.bmp
30/10/2022 17:13:26 - Waiting for image to be closed.
30/10/2022 17:13:27 - Sourcimage: C:\Users\johng\Pictures\Frontier Developments\Elite Dangerous\Screenshot_0012.bmp size: 5.93 Mb
30/10/2022 17:13:27 - System found: Chuelchs
30/10/2022 17:13:27 - Body found: Chuelchs AB
30/10/2022 17:13:27 - Last output image: C:\Users\johng\Pictures\Frontier Developments\Output\Chuelchs Oct_30_2022_17_13.png size: 1.29 Mb
30/10/2022 17:13:32 - Valid video created: C:\Users\johng\Videos\Elite Dangerous\Elite Dangerous 2022.10.30 - 17.13.31.08.DVR.mp4
30/10/2022 17:13:38 - File access issue: The process cannot access the file 'C:\Users\johng\Videos\Elite Dangerous\Elite Dangerous 2022.10.30 - 17.13.31.08.DVR.mp4' because it is being used by another process.
30/10/2022 17:13:38 - Waiting for video to be closed.
30/10/2022 17:13:39 - Waiting for video to be closed.
30/10/2022 17:13:40 - Source video: C:\Users\johng\Videos\Elite Dangerous\Elite Dangerous 2022.10.30 - 17.13.31.08.DVR.mp4 size: 366.96 Mb
30/10/2022 17:13:40 - System found: Chuelchs
30/10/2022 17:13:40 - Body found: Chuelchs AB
30/10/2022 17:13:40 - Last output video: de Carabas Chuelchs Oct_30_2022_17_13.mp4 size: 366.96 Mb