Ubuntu 16.04, anaconda python 2.7: Unsatisfiable dependencies

[dangmanhtruong1995]

Hi, I'm trying to build opencv with FFMPEG but this error showed up:

dangmanhtruong@dangmanhtruong-Inspiron-5468:/Downloads/conda-opencv-master$ ls
conda LICENSE README.md
dangmanhtruong@dangmanhtruong-Inspiron-5468:/Downloads/conda-opencv-master$ conda build conda/
Adding in variants from internal_defaults
INFO:conda_build.variants:Adding in variants from internal_defaults
Attempting to finalize metadata for opencv
INFO:conda_build.metadata:Attempting to finalize metadata for opencv
Solving environment: ...working... failed

Leaving build/test directories:
Work: /home/dangmanhtruong/anaconda2/conda-bld/work
Test: /home/dangmanhtruong/anaconda2/conda-bld/test_tmp
Leaving build/test environments:
Test: source activate /home/dangmanhtruong/anaconda2/conda-bld/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_plac
Build: source activate /home/dangmanhtruong/anaconda2/conda-bld/_build_env

Traceback (most recent call last):
File "/home/dangmanhtruong/anaconda2/bin/conda-build", line 11, in
sys.exit(main())
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/cli/main_build.py", line 413, in main
execute(sys.argv[1:])
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/cli/main_build.py", line 404, in execute
verify=args.verify)
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/api.py", line 193, in build
need_source_download=need_source_download, config=config, variants=variants)
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/build.py", line 1944, in build_tree
notest=notest,
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/build.py", line 1032, in build
output_metas = expand_outputs([(m, need_source_download, need_reparse_in_env)])
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/render.py", line 582, in expand_outputs
for (output_dict, m) in _m.get_output_metadata_set(permit_unsatisfiable_variants=False):
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/metadata.py", line 1845, in get_output_metadata_set
permit_unsatisfiable_variants=permit_unsatisfiable_variants)
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/metadata.py", line 670, in finalize_outputs_pass
fm = finalize_metadata(om, permit_unsatisfiable_variants=permit_unsatisfiable_variants)
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/render.py", line 379, in finalize_metadata
exclude_pattern)
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/render.py", line 293, in add_upstream_pins
permit_unsatisfiable_variants, exclude_pattern)
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/render.py", line 281, in _read_upstream_pin_files
permit_unsatisfiable_variants=permit_unsatisfiable_variants)
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/render.py", line 117, in get_env_dependencies
channel_urls=tuple(m.config.channel_urls))
File "/home/dangmanhtruong/anaconda2/lib/python2.7/site-packages/conda_build/environ.py", line 708, in get_install_actions
raise DependencyNeedsBuildingError(exc, subdir=subdir)
conda_build.exceptions.DependencyNeedsBuildingError: Unsatisfiable dependencies for platform linux-64: set(['cmake=3.3.0'])

Please help me, thank you very much