diff --git a/services/capture/src/capture-manager.js b/services/capture/src/capture-manager.js
index 39f9d87..5ab6e93 100644
--- a/services/capture/src/capture-manager.js
+++ b/services/capture/src/capture-manager.js
@@ -552,7 +552,8 @@ class CaptureManager {
 
       return {
         inputArgs: [
-          '-use_wallclock_as_timestamps', '1',
+          // No -use_wallclock_as_timestamps — framecache delivers CFR frames
+          // at the original ingest rate; -framerate produces correct timestamps.
           '-thread_queue_size', '512',
           '-f', 'rawvideo',
           '-pix_fmt',    'uyvy422',
@@ -680,16 +681,21 @@ class CaptureManager {
       return {
         inputArgs: [
           // fc_pipe stdout → ffmpeg rawvideo input 0 (video)
-          // -use_wallclock_as_timestamps aligns video+audio by arrival time,
-          // same as the legacy FIFO path.
-          '-use_wallclock_as_timestamps', '1',
+          // DO NOT use -use_wallclock_as_timestamps here. The framecache ring
+          // delivers frame-accurate 60fps from the SDI clock, so -framerate
+          // produces correct CFR timestamps from frame 0, immune to ffmpeg
+          // startup jitter and NVENC cold-start. Wallclock timestamping caused
+          // wrong framerate in the recorded file (e.g. 56.06 instead of 59.94)
+          // because arrival-time jitter at ffmpeg startup skewed the PTS.
           '-thread_queue_size', '512',
           '-f', 'rawvideo',
           '-pix_fmt',    'uyvy422',
           '-video_size', fcSize,
           '-framerate',  fcFps,
           '-i', 'pipe:0',
-          // Audio FIFO → ffmpeg input 1 (unchanged from legacy path)
+          // Audio FIFO → ffmpeg input 1. Keep wallclock on audio so A/V sync
+          // aligns by arrival time; aresample=async=1 (applied on the master
+          // output) resamples audio to match the video CFR timestamps.
           '-use_wallclock_as_timestamps', '1',
           '-thread_queue_size', '512',
           '-f', 's16le',