Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "/home/pysdk/wangxiang/demo/ENV/lib/python2.7/site-packages/oss2/__init__.py", line 3, in <module>

from . import models, exceptions


 "/home/pysdk/wangxiang/demo/ENV/lib/python2.7/site-packages/oss2/models.py", line 10, in <module>

from .utils import http_to_unixtime, make_progress_adapter, make_crc_adapter


 "/home/pysdk/wangxiang/demo/ENV/lib/python2.7/site-packages/oss2/utils.py", line 30, in <module>

from Crypto.Cipher import AES


 "/home/pysdk/wangxiang/demo/ENV/lib/python2.7/site-packages/oss2/Crypto.py", line 12, in <module>

from oss2.utils import b64decode_from_string, b64encode_as_string
ImportError: cannot import name b64decode_from_string

Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "av/__init__.py", line 15, in <module>

from av.audio.fifo import AudioFifo


 "av/audio/__init__.py", line 1, in <module>

from .frame import AudioFrame


 "av/audio/frame.pyx", line 1, in init av.audio.frame (src/av/audio/frame.c:4130)

from av.audio.format cimport get_audio_format


 "av/codec/codec.pxd", line 6, in init av.frame (src/av/frame.c:3538)

cdef class Codec(object):


 "av/codec/__init__.py", line 1, in <module>

from .codec import Codec, codecs_available


 "av/video/format.pxd", line 4, in init av.codec.codec (src/av/codec/codec.c:5054)

cdef class VideoFormat(object):


 "av/video/__init__.py", line 1, in <module>

from .frame import VideoFrame


 "av/container/streams.pxd", line 4, in init av.video.frame (src/av/video/frame.c:6340)

cdef class StreamContainer(object):


 "av/container/__init__.py", line 1, in <module>

from .core import Container, open


 "av/packet.pxd", line 8, in init av.container.core (src/av/container/core.c:4738)

cdef class Packet(Buffer):


 "av/container/streams.pxd", line 4, in init av.packet (src/av/packet.c:4298)

cdef class StreamContainer(object):


 "av/codec/context.pxd", line 11, in init av.container.streams (src/av/container/streams.c:4084)

cdef class CodecContext(object):
ImportError: av/codec/context.so: undefined symbol: avcodec_receive_frame
