A reprodução parece boa até que eu tente procurar o vídeo, então recebo esse erro várias vezes no terminal:
[00007fba4906ef78] avcodec decoder: Using NVIDIA VDPAU Driver Shared Library 343.36 Mon Dec 1 15:53:25 PST 2014 for hardware decoding.
[00007fba4906ef78] avcodec decoder: Using NVIDIA VDPAU Driver Shared Library 343.36 Mon Dec 1 15:53:25 PST 2014 for hardware decoding.
video surface destruction failure: The display was pre-empted, or a fatal error occurred.
[00007fba2c000a58] vdpau_avcodec generic error: video surface creation failure: An invalid handle value was provided.
[00007fba4906ef78] avcodec decoder error: hardware acceleration picture allocation failed
[h264 @ 0x7fba490e0aa0] decode_slice_header error
[h264 @ 0x7fba490e0aa0] no frame!
video surface destruction failure: An invalid handle value was provided.
[00007fba2c000a58] vdpau_avcodec generic error: video surface creation failure: An invalid handle value was provided.
[00007fba4906ef78] avcodec decoder error: hardware acceleration picture allocation failed
[h264 @ 0x7fba4913dd80] decode_slice_header error
[h264 @ 0x7fba4913dd80] no frame!
Isso é com uma placa gráfica GeForce 970.