def test_create_videomd(testpath):
"""Test that ``create_videomd`` writes VideoMD file and
md-reference file.
"""
creator = create_videomd.VideomdCreator(testpath)
# Debug print
print("\n\n%s" % ET.tostring(create_videomd.create_videomd_metadata(
"tests/data/video/valid_1.m1v")["0"],
pretty_print=True))
# Append same file twice
creator.add_videomd_md("tests/data/video/valid_1.m1v")
creator.add_videomd_md("tests/data/video/valid_1.m1v")
creator.write()
# Check that mdreference and one VideoMD-amd files are created
assert os.path.isfile(
os.path.join(testpath, 'create-videomd-md-references.jsonl'))
filepath = os.path.join(
testpath, '36260c626dac2f82359d7c22ef378392-VideoMD-amd.xml')
assert os.path.isfile(filepath)
def test_stream():
"""Test that ``create_videomd_metadata`` returns valid videomd from a
video container.
"""
videomd = create_videomd.create_videomd_metadata(
"tests/data/video/valid__h264_aac.mp4")["1"]
file_data = "/vmd:VIDEOMD/vmd:fileData"
path = "%s/vmd:bitsPerSample" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '8'
path = "%s/vmd:compression/vmd:codecCreatorApp" % file_data
assert videomd.xpath(path,
namespaces=NAMESPACES)[0].text == 'Lavf56.40.101'
path = "%s/vmd:compression/vmd:codecCreatorAppVersion" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '56.40.101'
path = "%s/vmd:compression/vmd:codecName" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'AVC'
path = "%s/vmd:compression/vmd:codecQuality" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'lossy'
path = "%s/vmd:dataRate" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '0.048704'
path = "%s/vmd:dataRateMode" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'Variable'
path = "%s/vmd:color" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'Color'
path = "%s/vmd:frame/vmd:pixelsHorizontal" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '320'
path = "%s/vmd:frame/vmd:pixelsVertical" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '180'
path = "%s/vmd:frame/vmd:PAR" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '1'
path = "%s/vmd:frame/vmd:DAR" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '1.778'
path = "%s/vmd:sampling" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '4:2:0'
path = "%s/vmd:duration" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'PT1S'
path = "%s/vmd:signalFormat" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '(:unap)'
path = "%s/vmd:sound" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'Yes'
def create(self):
"""Create the root audioMD XML element.
:returns: List of videoMD XML elements
"""
videomd = create_videomd.create_videomd_metadata(self.file_path,
streams=self.streams)
if not videomd:
raise InvalidFileError("Video file has no video streams.",
[self.file_metadata['identifier']])
return list(videomd.values())
def test_existing_scraper_result(testpath):
"""Test that existing json file from import_object is used.
We just need to check duration, since it's different from the real
duration.
"""
amdid = '36260c626dac2f82359d7c22ef378392'
file_ = 'tests/data/video/valid_1.m1v'
ref = {
file_: {
"path_type": "file",
"streams": {},
"md_ids": ["_" + amdid]
}
}
with open(os.path.join(testpath, 'import-object-md-references.jsonl'),
'wt') as out:
json.dump(ref, out)
stream_dict = {
0: {
'mimetype': 'video/mpeg',
'index': 0,
'par': '1',
'frame_rate': '30',
'data_rate': '0.171304',
'bits_per_sample': '8',
'data_rate_mode': 'Variable',
'color': 'Color',
'codec_quality': 'lossy',
'signal_format': '(:unap)',
'dar': '1.778',
'height': '180',
'sound': 'No',
'version': '1',
'codec_name': 'MPEG Video',
'codec_creator_app_version': '(:unav)',
'duration': 'PT50S',
'sampling': '4:2:0',
'stream_type': 'video',
'width': '320',
'codec_creator_app': '(:unav)'
}
}
with open(os.path.join(testpath, ('%s-scraper.json' % amdid)), 'wt') \
as outfile:
json.dump(stream_dict, outfile)
videomd = create_videomd.create_videomd_metadata(file_,
workspace=testpath)["0"]
path = "/vmd:VIDEOMD/vmd:fileData/vmd:duration"
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'PT50S'
def test_existing_scraper_result(testpath, run_cli):
"""Test that existing pickle file from import_object is used.
We just need to check duration, since it's different from the real
duration.
"""
amdid = '36260c626dac2f82359d7c22ef378392'
file_ = 'tests/data/video/valid_1.m1v'
xml = """<?xml version='1.0' encoding='UTF-8'?>
<mdReferences>
<mdReference file="{}">_{}</mdReference>
</mdReferences>""".format(file_, amdid).encode("utf-8")
with open(os.path.join(testpath, 'md-references.xml'), 'wb') as out:
out.write(xml)
stream_dict = {
0: {
'mimetype': 'video/mpeg',
'index': 0,
'par': '1',
'frame_rate': '30',
'data_rate': '0.171304',
'bits_per_sample': '8',
'data_rate_mode': 'Variable',
'color': 'Color',
'codec_quality': 'lossy',
'signal_format': '(:unap)',
'dar': '1.778',
'height': '180',
'sound': 'No',
'version': '1',
'codec_name': 'MPEG Video',
'codec_creator_app_version': '(:unav)',
'duration': 'PT50S',
'sampling': '4:2:0',
'stream_type': 'video',
'width': '320',
'codec_creator_app': '(:unav)'
}
}
with open(os.path.join(testpath, ('%s-scraper.pkl' % amdid)), 'wb') \
as outfile:
pickle.dump(stream_dict, outfile)
videomd = create_videomd.create_videomd_metadata(file_,
workspace=testpath)["0"]
path = "/vmd:VIDEOMD/vmd:fileData/vmd:duration"
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'PT50S'
def test_create_videomd_elem():
"""Test that ``create_videomd_metadata`` returns valid videomd.
"""
videomd = create_videomd.create_videomd_metadata(
"tests/data/video/valid_1.m1v")["0"]
file_data = "/vmd:VIDEOMD/vmd:fileData"
# Check namespace
assert videomd.nsmap["vmd"] == "http://www.loc.gov/videoMD/"
# Check individual elements
path = "/vmd:VIDEOMD[@ANALOGDIGITALFLAG='FileDigital']"
assert len(videomd.xpath(path, namespaces=NAMESPACES)) == 1
path = "%s/vmd:bitsPerSample" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '8'
path = "%s/vmd:compression/vmd:codecCreatorApp" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '(:unav)'
path = "%s/vmd:compression/vmd:codecCreatorAppVersion" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '(:unav)'
path = "%s/vmd:compression/vmd:codecName" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'MPEG Video'
path = "%s/vmd:compression/vmd:codecQuality" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'lossy'
path = "%s/vmd:dataRate" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '0.171304'
path = "%s/vmd:dataRateMode" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'Variable'
path = "%s/vmd:color" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'Color'
path = "%s/vmd:frame/vmd:pixelsHorizontal" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '320'
path = "%s/vmd:frame/vmd:pixelsVertical" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '180'
path = "%s/vmd:frame/vmd:PAR" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '1'
path = "%s/vmd:frame/vmd:DAR" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '1.778'
path = "%s/vmd:sampling" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '4:2:0'
path = "%s/vmd:duration" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'PT1S'
path = "%s/vmd:signalFormat" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == '(:unap)'
path = "%s/vmd:sound" % file_data
assert videomd.xpath(path, namespaces=NAMESPACES)[0].text == 'No'
def test_invalid_file():
"""Test that calling create_videomd_metadata() for file that can not be
parsed raises ValueError
"""
with pytest.raises(ValueError):
create_videomd.create_videomd_metadata("non-existent.mpg")