use driving video

lherman-cs · lherman-cs · commit 2fcd8fa45542 · 2026-07-02T14:06:48.000-04:00
diff --git a/.gitattributes b/.gitattributes
@@ -1 +1,2 @@
 *.h264 filter=lfs diff=lfs merge=lfs -text
+*.mp4 filter=lfs diff=lfs merge=lfs -text
diff --git a/pulsebeam-testdata/src/.gitignore b/pulsebeam-testdata/src/.gitignore
@@ -1,2 +1,3 @@
 *.mov
 *.mp4
+!driving.mp4
diff --git a/pulsebeam-testdata/src/Makefile b/pulsebeam-testdata/src/Makefile
@@ -1,7 +1,8 @@
 # Source Configuration
 SOURCE_URL   = https://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_720p_h264.mov
-# INPUT_VIDEO  = driving.webm
-INPUT_VIDEO = BigBuckBunny_720p.mov
+# https://www.pexels.com/video/scenic-city-drive-at-sunset-from-car-dashboard-31901316/
+INPUT_VIDEO  = driving.mp4
+# INPUT_VIDEO = BigBuckBunny_720p.mov
 
 INPUT_H264   = full_f_cbr.h264
 OUT_DIR      = .
diff --git a/pulsebeam-testdata/src/driving.mp4 b/pulsebeam-testdata/src/driving.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:46db156ba2a97502ce5d5d1cafd9af3f163ca8b701b5be2478f200a19d5226a1
+size 659955742
diff --git a/pulsebeam-testdata/src/full_f_cbr.h264 b/pulsebeam-testdata/src/full_f_cbr.h264
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:7ee9eef3f05d3577ea64580a9cb164528bbbd2b30a5c3b85f5e714af812aec03
-size 93281739
+oid sha256:8129906a3dc29e08c07238a054101b289ac1217b616ba8b8daca2a17b0d0b597
+size 17428944
diff --git a/pulsebeam-testdata/src/full_f_vbr.h264 b/pulsebeam-testdata/src/full_f_vbr.h264
@@ -1,3 +1,3 @@
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diff --git a/pulsebeam-testdata/src/half_h_cbr.h264 b/pulsebeam-testdata/src/half_h_cbr.h264
@@ -1,3 +1,3 @@
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-size 29830226
+oid sha256:7a7c184804d29919b0e3792923a6864e2cbdd36daeb8d138b2c5cecabe942783
+size 5577334
diff --git a/pulsebeam-testdata/src/half_h_vbr.h264 b/pulsebeam-testdata/src/half_h_vbr.h264
@@ -1,3 +1,3 @@
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diff --git a/pulsebeam-testdata/src/quarter_q_cbr.h264 b/pulsebeam-testdata/src/quarter_q_cbr.h264
@@ -1,3 +1,3 @@
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diff --git a/pulsebeam-testdata/src/quarter_q_vbr.h264 b/pulsebeam-testdata/src/quarter_q_vbr.h264
@@ -1,3 +1,3 @@
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+oid sha256:a644c7ad9c2c0b937fd504b931f86c52c1fa380de32ffe16c1ea03faaa1cb7b0
+size 2080030
diff --git a/pulsebeam-testdata/src/summary.py b/pulsebeam-testdata/src/summary.py
@@ -0,0 +1,76 @@
+import sys
+import os
+import statistics
+
+# --- CONFIGURATION (Adjust to match your target WebRTC constraints) ---
+TARGET_FPS = 30                # Expected frames per second
+BUDGET_BITRATE_KBPS = 1200     # Your WebRTC network allocation budget
+SPIKE_THRESHOLD_BYTES = int(BUDGET_BITRATE_KBPS * 1000 / TARGET_FPS / 8 * 2)   # Size where a frame risks stalling a network buffer
+
+def analyze_webrtc_baseline(input_stream):
+    try:
+        frames = []
+        for line in input_stream:
+            # Strip tags and handle whitespace
+            cleaned = line.split(']')[-1].strip()
+            if cleaned:
+                frames.append(int(cleaned))
+    except ValueError:
+        print(f"Error: Invalid data format")
+        return
+
+    total_frames = len(frames)
+    if total_frames == 0:
+        print("No frame data found.")
+        return
+
+    # 1. Stream & Bitrate Calculations
+    stream_duration = total_frames / TARGET_FPS
+    total_bytes = sum(frames)
+    total_bits = total_bytes * 8
+    
+    # Global Avg Bitrate
+    avg_bitrate_kbps = (total_bits / stream_duration) / 1000 if stream_duration > 0 else 0
+    
+    # 2. Keyframe (Max) Analysis
+    max_frame_size = max(frames)
+    max_frame_idx = frames.index(max_frame_size)
+    max_frame_bits = max_frame_size * 8
+    
+    # How long WebRTC network pacing requires to flush this keyframe over the wire
+    pacing_clear_time_ms = (max_frame_bits / (BUDGET_BITRATE_KBPS * 1000)) * 1000
+
+    # 3. Burst & Non-Keyframe Statistics
+    frames_excl_key = [f for i, f in enumerate(frames) if i != max_frame_idx]
+    avg_delta_frame_bytes = statistics.mean(frames_excl_key)
+    stdev_delta_frame_bytes = statistics.stdev(frames_excl_key) if len(frames_excl_key) > 1 else 0
+    
+    spike_count = sum(1 for size in frames if size > SPIKE_THRESHOLD_BYTES)
+
+    # --- OUTPUT SUMMARY ---
+    print("=" * 60)
+    print("               WEBRTC PROFILE BASELINE REPORT               ")
+    print("=" * 60)
+    print(f"Stream Duration (est) : {stream_duration:.2f} seconds (@ {TARGET_FPS} FPS)")
+    print(f"Total Frames Profiled : {total_frames}")
+    print("-" * 60)
+    print(f"Overall Avg Bitrate   : {avg_bitrate_kbps:.1f} kbps")
+    print(f"Target Budget Cap     : {BUDGET_BITRATE_KBPS} kbps")
+    print(f"Budget Utilization    : {(avg_bitrate_kbps / BUDGET_BITRATE_KBPS) * 100:.1f}%")
+    print(f"Budget Status         : {'PASS ✅' if avg_bitrate_kbps <= BUDGET_BITRATE_KBPS else 'OVER BUDGET ❌'}")
+    print("-" * 60)
+    print(f"Largest Frame (Key)   : {max_frame_size} bytes (idx={max_frame_idx})")
+    print(f"Keyframe Pacing Time  : {pacing_clear_time_ms:.1f} ms to flush over network")
+    print(f"Avg Delta Frame Size  : {avg_delta_frame_bytes:.1f} bytes (StDev: {stdev_delta_frame_bytes:.1f})")
+    print(f"Burst Risk Frames     : {spike_count} frame(s) exceeded {SPIKE_THRESHOLD_BYTES} bytes")
+    print("=" * 60)
+
+if __name__ == "__main__":
+    if len(sys.argv) > 1:
+        # File provided: open it and pass the file object
+        file_path = sys.argv[1]
+        with open(file_path, 'r') as f:
+            analyze_webrtc_baseline(f)
+    else:
+        # No arg: use stdin
+        analyze_webrtc_baseline(sys.stdin)

Original file line number	Diff line number	Diff line change
`@@ -1 +1,2 @@`
`1`	`1`	`*.h264 filter=lfs diff=lfs merge=lfs -text`
	`2`	`+*.mp4 filter=lfs diff=lfs merge=lfs -text`
Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,3 @@`
`1`	`1`	`*.mov`
`2`	`2`	`*.mp4`
	`3`	`+!driving.mp4`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+version https://git-lfs.github.com/spec/v1`
	`2`	`+oid sha256:46db156ba2a97502ce5d5d1cafd9af3f163ca8b701b5be2478f200a19d5226a1`
	`3`	`+size 659955742`