Parser

The main task of a parser is to populate and update two data structures, playlists and levels, which are used by TapasPlayer.

The playlists data structure is a list of dictionaries, one for each available video level. The dictionary has to include the following keys:

1. url: the video level base URL;
2. is_live: true if the video is a live stream;
3. segments: a list of dictionaries. Each dictionary contains: the segment_url; the segment_duration; and the byterange, when the video segmentation is logic.
4. start_index: index of the first chunk to be downloaded by the Downlaoder;
5. end_index: index of the last chunk of the current playlist;
6. duration: the duration (in seconds) of the playlist.

The levels data structure is a list of dictionaries, one for each available video level. The dictionary has to include the following keys:

1. rate: is the encoding rate of the video level measured in bytes/s;
2. resolution: is the video level resolution.

Base class methods

class parsers.BaseParser.BaseParser(url, playlists_type, video_container)

getFragmentDuration()

Gets the nominal fragment duration in seconds for the current playlist

Return type:int

getLevels()

Gets the list of levels. Returns a list of dictionary with rate (in B/s) and resolution for each entry

Return type:list of dictionaries

getPlaylistType()

Gets the playlist type (e.g. HLS or DASH)

Return type:str

getPlaylists()

For eache level, gets its playlist with the segments properties (e.g. list of segment url, segments duration etc.)

Return type:list of dictionaries

getVideoContainer()

Gets the video container type (e.g. MP4 or MPEGTS)

Return type:str

loadPlaylist()

Called to start the download of the playlists for each level. (It must be implemented for new parser).