How to use the youtube-dl.youtube_dl.utils.int_or_none function in youtube_dl

'vcodec': 'none',
                    'ext': ext,
                })
            else:
                height = int_or_none(source.get('height'))
                if height is None:
                    # Often no height is provided but there is a label in
                    # format like "1080p", "720p SD", or 1080.
                    height = int_or_none(self._search_regex(
                        r'^(\d{3,4})[pP]?(?:\b|$)', compat_str(source.get('label') or ''),
                        'height', default=None))
                a_format = {
                    'url': source_url,
                    'width': int_or_none(source.get('width')),
                    'height': height,
                    'tbr': int_or_none(source.get('bitrate')),
                    'ext': ext,
                }
                if source_url.startswith('rtmp'):
                    a_format['ext'] = 'flv'
                    # See com/longtailvideo/jwplayer/media/RTMPMediaProvider.as
                    # of jwplayer.flash.swf
                    rtmp_url_parts = re.split(
                        r'((?:mp4|mp3|flv):)', source_url, 1)
                    if len(rtmp_url_parts) == 3:
                        rtmp_url, prefix, play_path = rtmp_url_parts
                        a_format.update({
                            'url': rtmp_url,
                            'play_path': prefix + play_path,
                        })
                    if rtmp_params:
                        a_format.update(rtmp_params)

webpage = self._download_webpage(
            'http://iptv.orf.at/stories/%s' % story_id, story_id)

        video_id = self._search_regex(
            r'data-video(?:id)?="(\d+)"', webpage, 'video id')

        data = self._download_json(
            'http://bits.orf.at/filehandler/static-api/json/current/data.json?file=%s' % video_id,
            video_id)[0]

        duration = float_or_none(data['duration'], 1000)

        video = data['sources']['default']
        load_balancer_url = video['loadBalancerUrl']
        abr = int_or_none(video.get('audioBitrate'))
        vbr = int_or_none(video.get('bitrate'))
        fps = int_or_none(video.get('videoFps'))
        width = int_or_none(video.get('videoWidth'))
        height = int_or_none(video.get('videoHeight'))
        thumbnail = video.get('preview')

        rendition = self._download_json(
            load_balancer_url, video_id, transform_source=strip_jsonp)

        f = {
            'abr': abr,
            'vbr': vbr,
            'fps': fps,
            'width': width,
            'height': height,
        }

if not src:
                    continue
                formats.extend(self._extract_m3u8_formats(
                    src, video_id, 'mp4', 'm3u8_native', m3u8_id='hls', fatal=False))
            elif ext == 'mpd':
                if not src:
                    continue
                formats.extend(self._extract_mpd_formats(src, video_id, 'dash', fatal=False))
            else:
                streaming_src = source.get('streaming_src')
                stream_name, app_name = source.get('stream_name'), source.get('app_name')
                if not src and not streaming_src and (not stream_name or not app_name):
                    continue
                tbr = float_or_none(source.get('avg_bitrate'), 1000)
                height = int_or_none(source.get('height'))
                width = int_or_none(source.get('width'))
                f = {
                    'tbr': tbr,
                    'filesize': int_or_none(source.get('size')),
                    'container': container,
                    'ext': ext or container.lower(),
                }
                if width == 0 and height == 0:
                    f.update({
                        'vcodec': 'none',
                    })
                else:
                    f.update({
                        'width': width,
                        'height': height,
                        'vcodec': source.get('codec'),
                    })

guid = xpath_text(item, 'guid', fatal=True)
            title = xpath_text(item, 'title', fatal=True)

            media_group = xpath_element(item, _add_ns('media:group'), fatal=True)
            content = xpath_element(media_group, _add_ns('media:content'), fatal=True)
            content_url = content.attrib['url']

            thumbnails = []
            for thumbnail in media_group.findall(_add_ns('media:thumbnail')):
                thumbnail_url = thumbnail.get('url')
                if not thumbnail_url:
                    continue
                thumbnails.append({
                    'id': thumbnail.get('profile'),
                    'url': thumbnail_url,
                    'width': int_or_none(thumbnail.get('width')),
                    'height': int_or_none(thumbnail.get('height')),
                })

            timestamp = None
            release_date = find_xpath_attr(
                item, _add_ns('media:credit'), 'role', 'releaseDate')
            if release_date is not None:
                timestamp = parse_iso8601(release_date.text)

            entries.append({
                '_type': 'url_transparent',
                'url': content_url,
                'id': guid,
                'title': title,
                'description': xpath_text(item, 'description'),
                'timestamp': timestamp,

r'flashvars="type=(?:sina|video)&(.+?)&',
            webpage, 'xml config')

        # skipping the following page causes lags and eventually connection drop-outs
        self._request_webpage(
            'http://www.miomio.tv/mioplayer/mioplayerconfigfiles/xml.php?id=%s&r=%s' % (id, random.randint(100, 999)),
            video_id)

        vid_config_request = sanitized_Request(
            'http://www.miomio.tv/mioplayer/mioplayerconfigfiles/sina.php?{0}'.format(xml_config),
            headers=http_headers)

        # the following xml contains the actual configuration information on the video file(s)
        vid_config = self._download_xml(vid_config_request, video_id)

        if not int_or_none(xpath_text(vid_config, 'timelength')):
            raise ExtractorError('Unable to load videos!', expected=True)

        entries = []
        for f in vid_config.findall('./durl'):
            segment_url = xpath_text(f, 'url', 'video url')
            if not segment_url:
                continue
            order = xpath_text(f, 'order', 'order')
            segment_id = video_id
            segment_title = title
            if order:
                segment_id += '-%s' % order
                segment_title += ' part %s' % order
            entries.append({
                'id': segment_id,
                'url': segment_url,

lang = closed_caption['lang']
                if lang not in subtitles:
                    subtitles[lang] = []
                subtitles[lang].append({
                    'url': closed_caption['url'],
                    'ext': mimetype2ext(closed_caption['content_type']),
                })

        return {
            'id': video_id,
            'display_id': display_id,
            'title': unescapeHTML(meta['title']),
            'formats': formats,
            'description': clean_html(meta['description']),
            'thumbnail': meta['thumbnail'] if meta.get('thumbnail') else self._og_search_thumbnail(webpage),
            'duration': int_or_none(meta.get('duration')),
            'subtitles': subtitles,
        }

description_el = playlist.find('./{%s}summary' % self._EMP_PLAYLIST_NS)
            description = description_el.text if description_el is not None else None

            def get_programme_id(item):
                def get_from_attributes(item):
                    for p in('identifier', 'group'):
                        value = item.get(p)
                        if value and re.match(r'^[pb][\da-z]{7}$', value):
                            return value
                get_from_attributes(item)
                mediator = item.find('./{%s}mediator' % self._EMP_PLAYLIST_NS)
                if mediator is not None:
                    return get_from_attributes(mediator)

            programme_id = get_programme_id(item)
            duration = int_or_none(item.get('duration'))

            if programme_id:
                formats, subtitles = self._download_media_selector(programme_id)
            else:
                formats, subtitles = self._process_media_selector(item, playlist_id)
                programme_id = playlist_id

        return programme_id, title, description, duration, formats, subtitles

raise ExtractorError(
                'This video is currently unavailable. It may still be uploading or processing.',
                expected=True)

        title = video.get('reddit_title') or video['title']

        formats = []
        for key, info in video['files'].items():
            if not info.get('url'):
                continue
            formats.append({
                'format_id': key,
                'url': self._proto_relative_url(info['url']),
                'width': int_or_none(info.get('width')),
                'height': int_or_none(info.get('height')),
                'filesize': int_or_none(info.get('size')),
                'fps': int_or_none(info.get('framerate')),
                'vbr': float_or_none(info.get('bitrate'), 1000)
            })
        self._sort_formats(formats)

        return {
            'id': video_id,
            'title': title,
            'description': video.get('description'),
            'thumbnail': self._proto_relative_url(video.get('thumbnail_url')),
            'uploader': video.get('owner', {}).get('user_name'),
            'timestamp': float_or_none(video.get('date_added')),
            'duration': float_or_none(video.get('duration')),
            'view_count': int_or_none(video.get('plays')),
            'formats': formats
        }

def _extract_info(self, info):
        return {
            'id': info['_id'],
            'title': info.get('title') or 'Untitled Broadcast',
            'description': info.get('description'),
            'duration': int_or_none(info.get('length')),
            'thumbnail': info.get('preview'),
            'uploader': info.get('channel', {}).get('display_name'),
            'uploader_id': info.get('channel', {}).get('name'),
            'timestamp': parse_iso8601(info.get('recorded_at')),
            'view_count': int_or_none(info.get('views')),
        }