Direct access to avstream->index_entries was removed
in favour of the newly added avformat_index_get_entry()
and friends.
Fixes https://gitlab.freedesktop.org/gstreamer/gst-libav/-/issues/85
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/127>
GST_LOG_OBJECT (demux, "keyframeidx: %d", keyframeidx);
if (keyframeidx >= 0) {
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(58,78,0)
+ fftarget = avformat_index_get_entry (stream, keyframeidx)->timestamp;
+#else
fftarget = stream->index_entries[keyframeidx].timestamp;
+#endif
target = gst_ffmpeg_time_ff_to_gst (fftarget, stream->time_base);
GST_LOG_OBJECT (demux,