Python Forum

I'm currently using the following package for working with .m3u8 (HLS) playlist files

m3u8 Package

I'm attempting to find a similar implementation for .mpd(MPEG-DASH) manifest files but all I found were simple parsers.Here are the 2 functions which have been implemented for .m3u8 playlist files. My purpose is to do the same for .mpd manifest files as well.

import logging
from datetime import timedelta
from os.path import basename

from furl import furl
from m3u8 import M3U8, Media, Playlist, Segment
from m3u8 import load as load_m3u8

def make_master_manifest(request, stream):
    if stream.info:
        bandwidth = int(stream.info["bw_out"])
        width = stream.info["meta"]["video"]["width"]
        height = stream.info["meta"]["video"]["height"]
        stream_info = {
            "bandwidth": bandwidth,
            "resolution": f"{width}x{height}",
            "codecs": "avc1.640028,mp4a.40.2",
        }
    else:
        stream_info = {"bandwidth": 1000}

    p = Playlist(basename(stream.index_manifest_url), stream_info, None, None)
    m = M3U8()
    m.add_playlist(p)

    for feed in stream.feeds.all():
        media = Media(
            type="SUBTITLES",
            group_id="feeds",
            name=f"feed-{feed.uuid}",
            language="en",
            default="YES",
            autoselect="YES",
            uri=furl(feed.manifest_url).set({"stream": stream.uuid}).url,
        )
        p.media.append(media)
        m.add_media(media)

    return m.dumps()

def make_feed_manifest(request, stream, feed):
    url = request.build_absolute_uri(stream.index_manifest_url)
    p = load_m3u8(url)
    m = M3U8()
    m.version = p.version
    m.target_duration = p.target_duration
    m.media_sequence = p.media_sequence
    for s in p.segments:
        if not m.program_date_time:
            m.program_date_time = s.current_program_date_time

        vtt_url = furl(basename(feed.webvtt_url)).set({"stream": stream.uuid})
        if s.current_program_date_time:
            vtt_url.args.update(
                {
                    "start": s.current_program_date_time.isoformat(),
                    "end": (
                        s.current_program_date_time + timedelta(seconds=s.duration)
                    ).isoformat(),
                    "epoch": stream.started_at.isoformat(),
                }
            )
        v = Segment(
            base_uri=vtt_url.url,
            uri=vtt_url.url,
            duration=s.duration,
            discontinuity=s.discontinuity,
            program_date_time=s.current_program_date_time,
        )
        m.add_segment(v)

    return m.dumps()

Spent quite a few hours attempting to find the same. Any guidance in the right direction would be great.

I’ve been down the same road—unfortunately, there’s no direct equivalent to the m3u8 package for .mpd manifests. Most libraries are parsers only. You might need to build something on top of mpd-parser or xml.etree.ElementTree for full read/write support. Let me know if you start building one!