diff --git a/src/usr/local/bin/mediaconch_validation_wrapper.sh b/src/usr/local/bin/mediaconch_validation_wrapper.sh
new file mode 100755
index 0000000000000000000000000000000000000000..a5167c1130ccb788aec97ece4be3ca86bff8c51b
--- /dev/null
+++ b/src/usr/local/bin/mediaconch_validation_wrapper.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# Author: Jens Steidl
+# SLUB Dresden, Department Longterm Preservation
+# copyright 2023, licensed under terms of GNU General Public License 3.0,
+# see file LICENSE.txt for details.
+### META
+# AUTHORS:
+#  - Jens Steidl (<Jens.Steidl@slub-dresden.de>)
+
+if [[ $# -eq 0 ]]; then
+    echo "No file path supplied."
+    exit 1;
+fi
+FILE="${@: -1:1}"
+if ! [[ -f "${FILE}" ]]; then
+    echo "File '${FILE}' does not exist."
+    exit 1;
+fi
+
+TOOL_OUTPUT=$(/usr/bin/mediaconch ${@: 1:$(($#-1))} "${FILE}")
+echo "${TOOL_OUTPUT}"
+
+# exit code
+#   0 -> valid media file
+#   1 -> invalid media file
+echo ${TOOL_OUTPUT} | grep "Outcome" | head -n1 | grep -v "fail"
diff --git a/src/usr/local/bin/validate_workflow.sh b/src/usr/local/bin/validate_workflow.sh
index ae455e48a17392697c4309fff688f5c820fab054..194626749e42b7953a807dffae0fd563ef2e464d 100755
--- a/src/usr/local/bin/validate_workflow.sh
+++ b/src/usr/local/bin/validate_workflow.sh
@@ -94,12 +94,12 @@ declare -A validators
 # filetype has max 4 chars
 # stage has max 9 chars
 # each validator should return true if file was valid
-validators[__mediathek_mka__current]="/usr/bin/mediaconch -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE| fgrep Outcome| head -n 1| fgrep -v fail"
-validators[__mediathek_mka_upcoming]="/usr/bin/mediaconch -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE| fgrep Outcome| head -n 1| fgrep -v fail"
-validators[_______save_mkv__current]="/usr/bin/mediaconch -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE| fgrep Outcome| head -n 1| fgrep -v fail" 
-validators[_______save_mkv_upcoming]="/usr/bin/mediaconch -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE| fgrep Outcome| head -n 1| fgrep -v fail"
-validators[_______save_mka__current]="/usr/bin/mediaconch -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE| fgrep Outcome| head -n 1| fgrep -v fail"
-validators[_______save_mka_upcoming]="/usr/bin/mediaconch -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE| fgrep Outcome| head -n 1| fgrep -v fail"
+validators[__mediathek_mka__current]="/usr/local/bin/mediaconch_validation_wrapper.sh -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE"
+validators[__mediathek_mka_upcoming]="/usr/local/bin/mediaconch_validation_wrapper.sh -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE"
+validators[_______save_mkv__current]="/usr/local/bin/mediaconch_validation_wrapper.sh -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE"
+validators[_______save_mkv_upcoming]="/usr/local/bin/mediaconch_validation_wrapper.sh -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE"
+validators[_______save_mka__current]="/usr/local/bin/mediaconch_validation_wrapper.sh -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE"
+validators[_______save_mka_upcoming]="/usr/local/bin/mediaconch_validation_wrapper.sh -ft -p /usr/local/etc/SLUB_mediaconch_policy_all.xml FILE"
 validators[________ddz_tif__current]="/usr/bin/checkit_tiff_current /usr/local/etc/cit_tiff6_baseline_SLUB_current.cfg FILE"
 validators[________ddz_tif_upcoming]="/usr/bin/checkit_tiff_upcoming /usr/local/etc/cit_tiff6_baseline_SLUB_upcoming.cfg FILE"
 validators[______digas_tif__current]="/usr/bin/checkit_tiff_current /usr/local/etc/cit_tiff6_geotiff_SLUB_current.cfg FILE"
@@ -122,8 +122,8 @@ validators[__forensdta_ewf_upcoming]="/usr/bin/ewfverify -v FILE"
 validators[__forensdta_ewf__current]="/usr/bin/ewfverify -v FILE"
 validators[_retromuenz_tif_upcoming]="/usr/bin/checkit_tiff_upcoming -mq /usr/share/checkit_tiff_upcoming/example_configs/cit_tiff_retrofotos_SLUB.cfg FILE"
 validators[_retromuenz_tif__current]="/usr/bin/checkit_tiff_current -mq /usr/share/checkit_tiff_current/example_configs/cit_tiff_retrofotos_SLUB.cfg FILE"
-validators[____retrovf_mkv__current]="/usr/bin/mediaconch -ft -p /usr/local/etc/mediaconch/SLUB_mediaconch_policy_all.xml FILE"
-validators[____retrovf_mkv_upcoming]="/usr/bin/mediaconch -ft -p /usr/local/etc/mediaconch/SLUB_mediaconch_policy_all.xml FILE"
+validators[____retrovf_mkv__current]="/usr/local/bin/mediaconch_validation_wrapper.sh -ft -p /usr/local/etc/mediaconch/SLUB_mediaconch_policy_all.xml FILE"
+validators[____retrovf_mkv_upcoming]="/usr/local/bin/mediaconch_validation_wrapper.sh -ft -p /usr/local/etc/mediaconch/SLUB_mediaconch_policy_all.xml FILE"
 
 
 set -o nounset                              # Treat unset variables as an error