Current fallback to lost_sync seems to impede a delay to restore
sync. Let the parser parse and skip the private stream.
Here it contains the digital camera brand (in 2010 bytes)
and is repeated twice.
https://bugzilla.gnome.org/show_bug.cgi?id=697283
gst_pes_filter_is_sync (guint32 sync)
{
return ((sync & 0xfffffffc) == 0x000001bc) ||
+ ((sync & 0xfffffffd) == 0x000001bd) ||
((sync & 0xffffffe0) == 0x000001c0) ||
((sync & 0xfffffff0) == 0x000001f0) ||
((sync & 0xfffffff0) == 0x000001e0);