From 3e84c65cb8f6490e3548b7832867b8d93a327a44 Mon Sep 17 00:00:00 2001
From: Roger van Bommel <fjvanbommel@gmail.com>
Date: Mon, 29 Dec 2025 20:21:23 +0100
Subject: [PATCH] Correct null PID behaviour for DVB-S modulator

---
 plugins/channeltx/moddatv/datvmodsource.cpp | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/plugins/channeltx/moddatv/datvmodsource.cpp b/plugins/channeltx/moddatv/datvmodsource.cpp
index 9549141e3..44e2e3126 100644
--- a/plugins/channeltx/moddatv/datvmodsource.cpp
+++ b/plugins/channeltx/moddatv/datvmodsource.cpp
@@ -377,12 +377,11 @@ void DATVModSource::modulateSample()
             else
             {
                 // Insert null packet. PID=0x1fff
-                memset(m_mpegTS, 0, sizeof(m_mpegTS));
+                memset(m_mpegTS, 0xFF, sizeof(m_mpegTS));
                 m_mpegTS[0] = 0x47; // Sync byte
-                m_mpegTS[1] = 0x01;
-                m_mpegTS[2] = 0xff;
-                m_mpegTS[3] = 0xff;
-                m_mpegTS[4] = 0x10;
+                m_mpegTS[1] = 0x1F;
+                m_mpegTS[2] = 0xFF;
+                m_mpegTS[3] = 0x10;
 
                 if (tsFileReady) {
                     m_frameCount++;