mux: mp4: write proper empty TTML samples

acovo · Feb 24, 2024 · 28a2317 · 28a2317
1 parent e2b450e
commit 28a2317
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/modules/mux/mp4/mp4.c b/modules/mux/mp4/mp4.c
@@ -46,6 +46,7 @@
 #include "../../packetizer/hxxx_nal.h"
 #include "../av1_pack.h"
 #include "../extradata.h"
+#include "../../codec/ttml/ttml.h"
 
 /*****************************************************************************
  * Module descriptor
@@ -818,9 +819,10 @@ static int MuxStream(sout_mux_t *p_mux, sout_input_t *p_input, mp4_stream_t *p_s
         }
         else if(mp4mux_track_GetFmt(p_stream->tinfo)->i_codec == VLC_CODEC_TTML)
         {
-            p_empty = block_Alloc(40);
+            const char emptyttml[] = "<tt xmlns=\"" TT_NS "\"/>";
+            p_empty = block_Alloc(sizeof(emptyttml));
             if(p_empty)
-                memcpy(p_empty->p_buffer, "<tt><body><div><p></p></div></body></tt>", 40);
+                memcpy(p_empty->p_buffer, emptyttml, p_empty->i_buffer);
         }
         else if(mp4mux_track_GetFmt(p_stream->tinfo)->i_codec == VLC_CODEC_WEBVTT)
         {