From e90a9d30d60c792da0f663252c6e649ecfe151fd Mon Sep 17 00:00:00 2001
From: Artur Mukhamadiev <artur.mukhamadiev@lge.com>
Date: Thu, 11 Sep 2025 14:41:54 +0300
Subject: [PATCH] testing pipelines

---
 ffmpeg-psnr-check.sh | 16 ++++++++++++++++
 gstPlayback.sh       | 17 +++++++++++++++++
 gstreamer-record.sh  | 38 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 71 insertions(+)
 create mode 100644 ffmpeg-psnr-check.sh
 create mode 100755 gstPlayback.sh
 create mode 100755 gstreamer-record.sh

diff --git a/ffmpeg-psnr-check.sh b/ffmpeg-psnr-check.sh
new file mode 100644
index 0000000..1259353
--- /dev/null
+++ b/ffmpeg-psnr-check.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+if [ "$#" -ne 2 ]; then
+    echo "Usage: $0 <input_video> <reference_video>"
+    exit 1
+fi
+
+if ! command -v ffmpeg &> /dev/null
+then
+    echo "ffmpeg could not be found, please install it."
+    exit 1
+fi
+
+#this script checks the PSNR between two video streams using ffmpeg
+# one video stream is the reference and the other is the test stream both are recorded files
+ffmpeg -i "$1" -i "$2" -filter_complex "psnr" -f null /dev/null
\ No newline at end of file
diff --git a/gstPlayback.sh b/gstPlayback.sh
new file mode 100755
index 0000000..35ae884
--- /dev/null
+++ b/gstPlayback.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Set environment variables for GStreamer latency tracing.
+# Note: We are using a different log file name to avoid overwriting the sender's log.
+GST_DEBUG_COLOR_MODE=off \
+GST_TRACERS="latency(flags=pipeline+element)" \
+GST_DEBUG="GST_TRACER:7" \
+GST_DEBUG_FILE=latency_traces_receiver.log \
+gst-launch-1.0 -v \
+    udpsrc uri="udp://239.239.239.3:8889" ! \
+    "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)MP2T" ! \
+    rtpmp2tdepay ! \
+    tsdemux ! \
+    h264parse ! \
+    avdec_h264 ! \
+    videoconvert ! \
+    autovideosink sync=false
diff --git a/gstreamer-record.sh b/gstreamer-record.sh
new file mode 100755
index 0000000..b2383bf
--- /dev/null
+++ b/gstreamer-record.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# This script record two video streams using gstreamer and saves them to files
+# The first video stream is the reference and the second is the encoded stream to be tested
+# First stream is coming from decklinkvideosrc
+# Second stream is same decklinkvideosrc but encoded using x264enc
+# Both streams are saved to files using mp4mux and filesink
+
+if [ "$#" -lt 2 ]; then
+    echo "Usage: $0 <reference_video_file> <test_video_file> <optional: DEBUG>"
+    exit 1
+fi
+
+if ! command -v gst-launch-1.0 &> /dev/null
+then
+    echo "gstreamer could not be found, please install it."
+    exit 1
+fi
+
+# Record both streams in one run
+if [ "$3" == "DEBUG" ]; then
+    gst-launch-1.0 -e \
+        videotestsrc pattern=smpte ! \
+        capsfilter caps="video/x-raw,format=RGBA,width=1920,height=1080,framerate=30/1" ! \
+        videoconvert ! queue ! tee name=t \
+        t. ! queue ! filesink location="$1" \
+        t. ! queue ! x264enc bitrate=5000 speed-preset=ultrafast tune=zerolatency ! h264parse ! mpegtsmux ! filesink location="$2"
+    exit 0
+fi
+
+gst-launch-1.0 -e \
+  decklinkvideosrc \
+    device-number=1 \
+    connection=1 \
+    mode=auto \
+    drop-no-signal-frames=true ! videoconvert ! queue ! tee name=t \
+    t. ! queue ! mpegtsmux ! filesink location="$1" \
+    t. ! queue ! x264enc bitrate=5000 speed-preset=ultrafast tune=zerolatency ! mpegtsmux ! filesink location="$2"
\ No newline at end of file