[vlc-commits] [Git][videolan/vlc][3.0.x] demux: mp4: compute cts_shift when missing

[Steve Lhomme (@robUx4)]

Steve Lhomme pushed to branch 3.0.x at VideoLAN / VLC


Commits:
6905dfa3 by François Cartegnie at 2024-02-12T17:22:12+01:00
demux: mp4: compute cts_shift when missing

(cherry picked from commit a1ad08a051f85a645c0353116c930806cdda6128)

- - - - -


1 changed file:

- modules/demux/mp4/mp4.c


Changes:

=====================================
modules/demux/mp4/mp4.c
=====================================
@@ -2693,7 +2693,17 @@ static int TrackCreateSamplesIndex( demux_t *p_demux,
         int64_t i_cts_shift = 0;
         const MP4_Box_t *p_cslg = MP4_BoxGet( p_demux_track->p_stbl, "cslg" );
         if( p_cslg && BOXDATA(p_cslg) )
+        {
             i_cts_shift = BOXDATA(p_cslg)->ct_to_dts_shift;
+        }
+        else if( ctts->i_entry_count ) /* Compute for Quicktime */
+        {
+            for( uint32_t i = 0; i < ctts->i_entry_count; i++ )
+            {
+                if( ctts->pi_sample_offset[i] < 0 && ctts->pi_sample_offset[i] < -i_cts_shift )
+                    i_cts_shift = -ctts->pi_sample_offset[i];
+            }
+        }
 
         /* Create pts-dts table per chunk */
         uint32_t i_index = 0;



View it on GitLab: https://code.videolan.org/videolan/vlc/-/commit/6905dfa3cf005f271109800f13bf3644d0ba4e4f

-- 
View it on GitLab: https://code.videolan.org/videolan/vlc/-/commit/6905dfa3cf005f271109800f13bf3644d0ba4e4f
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