This prevents totem from starting.
Here is the backtrace I get from valgrind :

==29148== Invalid write of size 4
==29148==    at 0x20C164C0: output_overlap_float (gstscaletempo.c:215)
==29148==    by 0x20C16BEA: gst_scaletempo_transform (gstscaletempo.c:502)
==29148==    by 0xD595394: default_generate_output (gstbasetransform.c:2123)
==29148==    by 0xD594C65: gst_base_transform_chain (gstbasetransform.c:2276)
==29148==    by 0x7AC8316: gst_pad_chain_data_unchecked (gstpad.c:4205)
==29148==    by 0x7AC8316: gst_pad_push_data (gstpad.c:4457)
==29148==    by 0x7AD04B1: gst_pad_push (gstpad.c:4576)
==29148==    by 0xD594D3F: gst_base_transform_chain (gstbasetransform.c:2312)
==29148==    by 0x7AC8316: gst_pad_chain_data_unchecked (gstpad.c:4205)
==29148==    by 0x7AC8316: gst_pad_push_data (gstpad.c:4457)
==29148==    by 0x7AD04B1: gst_pad_push (gstpad.c:4576)
==29148==    by 0x7AB70BA: gst_proxy_pad_chain_default (gstghostpad.c:127)
==29148==    by 0x7AC8316: gst_pad_chain_data_unchecked (gstpad.c:4205)
==29148==    by 0x7AC8316: gst_pad_push_data (gstpad.c:4457)
==29148==    by 0x7AD04B1: gst_pad_push (gstpad.c:4576)
==29148==  Address 0x1f4dac34 is 2,068 bytes inside a block of size 2,071 alloc'd
==29148==    at 0x4C2BBAF: malloc (vg_replace_malloc.c:299)
==29148==    by 0x6336028: g_malloc (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.5200.3)
==29148==    by 0x634E462: g_slice_alloc (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.5200.3)
==29148==    by 0x7A85B99: _sysmem_new_block (gstallocator.c:417)
==29148==    by 0x7A91361: gst_buffer_new_allocate (gstbuffer.c:839)
==29148==    by 0xD596B11: default_prepare_output_buffer (gstbasetransform.c:1639)
==29148==    by 0xD5952A3: default_generate_output (gstbasetransform.c:2094)
==29148==    by 0xD594C65: gst_base_transform_chain (gstbasetransform.c:2276)
==29148==    by 0x7AC8316: gst_pad_chain_data_unchecked (gstpad.c:4205)
==29148==    by 0x7AC8316: gst_pad_push_data (gstpad.c:4457)
==29148==    by 0x7AD04B1: gst_pad_push (gstpad.c:4576)
==29148==    by 0xD594D3F: gst_base_transform_chain (gstbasetransform.c:2312)
==29148==    by 0x7AC8316: gst_pad_chain_data_unchecked (gstpad.c:4205)
==29148==    by 0x7AC8316: gst_pad_push_data (gstpad.c:4457)
==29148== 
==29148== Invalid write of size 8
==29148==    at 0x4C32643: memmove (vg_replace_strmem.c:1252)
==29148==    by 0x20C16C0B: memcpy (string3.h:53)
==29148==    by 0x20C16C0B: gst_scaletempo_transform (gstscaletempo.c:504)
==29148==    by 0xD595394: default_generate_output (gstbasetransform.c:2123)
==29148==    by 0xD594C65: gst_base_transform_chain (gstbasetransform.c:2276)
==29148==    by 0x7AC8316: gst_pad_chain_data_unchecked (gstpad.c:4205)
==29148==    by 0x7AC8316: gst_pad_push_data (gstpad.c:4457)
==29148==    by 0x7AD04B1: gst_pad_push (gstpad.c:4576)
==29148==    by 0xD594D3F: gst_base_transform_chain (gstbasetransform.c:2312)
==29148==    by 0x7AC8316: gst_pad_chain_data_unchecked (gstpad.c:4205)
==29148==    by 0x7AC8316: gst_pad_push_data (gstpad.c:4457)
==29148==    by 0x7AD04B1: gst_pad_push (gstpad.c:4576)
==29148==    by 0x7AB70BA: gst_proxy_pad_chain_default (gstghostpad.c:127)
==29148==    by 0x7AC8316: gst_pad_chain_data_unchecked (gstpad.c:4205)
==29148==    by 0x7AC8316: gst_pad_push_data (gstpad.c:4457)
==29148==    by 0x7AD04B1: gst_pad_push (gstpad.c:4576)
==29148==  Address 0x1f4dadb0 is 16 bytes before a block of size 5 free'd
==29148==    at 0x4C2CDDB: free (vg_replace_malloc.c:530)
==29148==    by 0x60CA3EF: g_value_unset (in /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.5200.3)
==29148==    by 0x7B15BAC: gst_value_subtract_list (gstvalue.c:5250)
==29148==    by 0x7B15BAC: gst_value_subtract (gstvalue.c:5914)
==29148==    by 0x7B15D40: gst_value_is_subset (gstvalue.c:4168)
==29148==    by 0x7AF1039: gst_structure_foreach (gststructure.c:1128)
==29148==    by 0x7A99B88: gst_caps_merge_structure_full (gstcaps.c:775)
==29148==    by 0x7A9B7F4: gst_caps_intersect_first (gstcaps.c:1646)
==29148==    by 0x7A9B7F4: gst_caps_intersect_full (gstcaps.c:1678)
==29148==    by 0xD597A78: gst_base_transform_find_transform (gstbasetransform.c:1124)
==29148==    by 0xD597A78: gst_base_transform_setcaps (gstbasetransform.c:1291)
==29148==    by 0xD599A99: gst_base_transform_sink_eventfunc (gstbasetransform.c:1880)
==29148==    by 0x7AC7056: gst_pad_send_event_unchecked (gstpad.c:5608)
==29148==    by 0x7AC751D: gst_pad_push_event_unchecked (gstpad.c:5264)
==29148==    by 0x7AC792F: push_sticky (gstpad.c:3807)
==29148==  Block was alloc'd at
==29148==    at 0x4C2BBAF: malloc (vg_replace_malloc.c:299)
==29148==    by 0x6336028: g_malloc (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.5200.3)
==29148==    by 0x634FFCE: g_strdup (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.5200.3)
==29148==    by 0x60CCE5C: ??? (in /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.5200.3)
==29148==    by 0x7B15A12: gst_value_subtract (gstvalue.c:5926)
==29148==    by 0x7B15BD4: gst_value_subtract_list (gstvalue.c:5245)
==29148==    by 0x7B15BD4: gst_value_subtract (gstvalue.c:5914)
==29148==    by 0x7B15D40: gst_value_is_subset (gstvalue.c:4168)
==29148==    by 0x7AF1039: gst_structure_foreach (gststructure.c:1128)
==29148==    by 0x7A99B88: gst_caps_merge_structure_full (gstcaps.c:775)
==29148==    by 0x7A9B7F4: gst_caps_intersect_first (gstcaps.c:1646)
==29148==    by 0x7A9B7F4: gst_caps_intersect_full (gstcaps.c:1678)
==29148==    by 0xD597A78: gst_base_transform_find_transform (gstbasetransform.c:1124)
==29148==    by 0xD597A78: gst_base_transform_setcaps (gstbasetransform.c:1291)
==29148==    by 0xD599A99: gst_base_transform_sink_eventfunc (gstbasetransform.c:1880)
==29148==