diff --git a/test/0module.mk b/test/0module.mk
index d70fceb..9c96457 100644
--- a/test/0module.mk
+++ b/test/0module.mk
@@ -11,13 +11,9 @@ test-dist-qa-msx1-assert
 assert-all: | $(BUILD_TEST)
 	@echo All assertions completed.
 
-bin/test/video-merge.lst: | assert-all
-	@echo === Create video merge listing
-	ls -1 bin/test/*-omsx/videos/msxbuild-*.avi | awk -F "bin/test/" -v s="file '" -v e="'" '{print s$$2e}' > $@
-
-bin/test/video-session.avi: bin/test/video-merge.lst
-	ffmpeg -f concat -i $< -c copy $@
-
 .PHONY: assert-all-video
-assert-all-video: bin/test/video-session.avi
-	@echo Video merge completed.
+assert-all-video: | assert-all
+	@echo === Build session video listing
+	ls -1 bin/test/*-omsx/videos/msxbuild-*.avi | awk -F "bin/test/" -v s="file '" -v e="'" '{print s$$2e}' > bin/test/video-merge.lst
+	ffmpeg -v quiet -y -f concat -i bin/test/video-merge.lst -c copy bin/test/video-session.avi
+	@echo === Concatted video completed.