3 files changed, 42 insertions(+), 1 deletions(-)

M gnu/local.mk
A gnu/packages/patches/ffmpeg-add-av_stream_get_first_dts-for-chromium.patch
M gnu/packages/video.scm

@@ 1297,6 1297,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/fenics-dolfin-boost.patch		\
   %D%/packages/patches/fenics-dolfin-config-slepc.patch		\
   %D%/packages/patches/fenics-dolfin-hdf5-version-check.patch	\
+  %D%/packages/patches/ffmpeg-add-av_stream_get_first_dts-for-chromium.patch	\
   %D%/packages/patches/ffmpeg-jami-change-RTCP-ratio.patch	\
   %D%/packages/patches/ffmpeg-jami-rtp_ext_abs_send_time.patch	\
   %D%/packages/patches/ffmpeg-jami-libopusdec-enable-FEC.patch	\

@@ 0,0 1,37 @@
+Add 'av_stream_get_first_dts' for Chromium and QtWebEngine.
+
+Taken from Arch Linux:
+  <https://gitlab.archlinux.org/archlinux/packaging/packages/ffmpeg/-/blob/a02c1a15706ea832c0d52a4d66be8fb29499801a/add-av_stream_get_first_dts-for-chromium.patch>
+
+---
+diff '--color=auto' -rupN ffmpeg.orig/libavformat/avformat.h ffmpeg/libavformat/avformat.h
+--- ffmpeg.orig/libavformat/avformat.h	2022-08-19 17:42:47.323422603 +0200
++++ ffmpeg/libavformat/avformat.h	2022-08-19 17:42:51.347130436 +0200
+@@ -1128,6 +1128,10 @@ struct AVCodecParserContext *av_stream_g
+  */
+ int64_t    av_stream_get_end_pts(const AVStream *st);
+ 
++// Chromium: We use the internal field first_dts vvv
++int64_t    av_stream_get_first_dts(const AVStream *st);
++// Chromium: We use the internal field first_dts ^^^
++
+ #define AV_PROGRAM_RUNNING 1
+ 
+ /**
+diff '--color=auto' -rupN ffmpeg.orig/libavformat/mux_utils.c ffmpeg/libavformat/mux_utils.c
+--- ffmpeg.orig/libavformat/mux_utils.c	2022-08-19 17:42:47.346758108 +0200
++++ ffmpeg/libavformat/mux_utils.c	2022-08-19 17:47:28.549589002 +0200
+@@ -37,6 +37,13 @@ int64_t av_stream_get_end_pts(const AVSt
+         return AV_NOPTS_VALUE;
+ }
+ 
++// Chromium: We use the internal field first_dts vvv
++int64_t av_stream_get_first_dts(const AVStream *st)
++{
++  return cffstream(st)->first_dts;
++}
++// Chromium: We use the internal field first_dts ^^^
++
+ int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
+                          int std_compliance)
+ {

@@ 1863,7 1863,10 @@ audio/video codec library.")
                                   version ".tar.xz"))
               (sha256
                (base32
-                "0s7r2qv8gh2a3w568n9xxgcz0q8j5ww1jdsci1hm9f4l1yqg9146"))))))
+                "0s7r2qv8gh2a3w568n9xxgcz0q8j5ww1jdsci1hm9f4l1yqg9146"))
+              (patches
+               (search-patches
+                "ffmpeg-add-av_stream_get_first_dts-for-chromium.patch"))))))
 
 (define-public ffmpeg-5
   (package