OpenCV 2.4 in python - Video processing

Question

The Project: Add a running date/time stamp on each and every frame of a video. (The result of digital video camera, and my father asked me how can he add the timestamp(to the mi

Answer 1

Used hachoir-metadata to read metadata of video file(including Framerate, height and width .

importing:

from hachoir_core.error import HachoirError
from hachoir_core.cmd_line import unicodeFilename
from hachoir_parser import createParser
from hachoir_core.tools import makePrintable
from hachoir_metadata import extractMetadata
from hachoir_core.i18n import getTerminalCharset
from hachoir_metadata.metadata_item import QUALITY_BEST

function:

def metaDataFile(filePath):
    filename, realname = unicodeFilename(filePath), filePath
    parser = createParser(filename, realname)
    try:
        metadata = extractMetadata(parser, QUALITY_BEST)
    except HachoirError, err:
        print "Metadata extraction error: %s" % unicode(err)
        metadata = None
    if not metadata:
        print metadata
        print "Unable to extract metadata"
        exit(1)
    return metadata

usage:

metadata = metaDataFile(videoPath)
width = metadata.get('width')
height = metadata.get('height')
fps = metadata.get('frame_rate')

to see relevant properties:

for data in sorted(metadata):
    if len(data.values ) > 0:
        print data.key, data.values[0].value