dirkf
commented
3 years ago BBC has several different 'media selector' domains, each domain serving a certain set of 'media sets', and each media set targeted at a different application. Fetching a URL whose path depends on the media set name and the programme ID (vpid) gives a playlist for the programme with the various formats for that media set.
The BBC extractor currently uses the open.live.bbc.co.uk media selector with iptv-all and pc media sets. Other sets that can be used include legacy-iptv-all and iptv-uhd: the latter offers the resolution wanted by OP but is only supported by authenticated media selector domains. One way of getting authenticated is to extract a client certificate from a supported set-top box and present it using --client-certificate as added in PR #29590.
yt-dl maintainers deprecate multiple requests to cover a wide range of media sets combined from several media selectors, so this might be a useful shortcut, but how would we guess that the right value is 12000000 rather than say, 11600000 for a particular programme ID on a particular day?
In the current extractor, one could patch this in (at the end of the _process_media_selector() method): [updated]
--- old/youtube_dl/extractor/bbc.py
+++ new/youtube_dl/extractor/bbc.py
@@ -445,6 +445,14 @@
formats.append(fmt)
elif kind == 'captions':
subtitles = self.extract_subtitles(media, programme_id)
+ formats += [
+ {'url': fmt['url'].replace('-video=5070000.m3u8', '-video=12000000.m3u8'),
+ 'height': 1080, 'vbr': 12000,
+ 'abr': fmt.get('abr'),
+ 'protocol': fmt.get('protocol'),
+ 'preference': fmt.get('preference'),
+ 'format_id': fmt.get('format_id', 'hack') + '-really12M',
+ } for fmt in formats if '-video=5070000.m3u8' in fmt.get('url', '')]
return formats, subtitles
def _download_playlist(self, playlist_id):Another option for acquiring 'backup' content at >720p for those with a TV licence in range of BBC DVB-T2 broadcasts is a USB TV receiver dongle, but Freeview(xxx) receivers are required to encrypt the content on disk.
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Description
WRITE DESCRIPTION HERE
I've discovered that modifying the playlist download URL for BBC iPlayer from
...-video=5070000.m3u8...
to
-video=12000000.m3u8
will give you access to BBC iPlayer content in 1080p50! I discovered this through this post:
https://www.avforums.com/threads/is-there-a-way-to-get-iplayer-content-in-1080p.2319869/post-29211339
Not sure how the poster discovered this and not sure whether this is hidden from known media selectors etc. But please consider how this can be incorporated into youtube-dl or please help describing how I can experiment with customizing the Python code myself.
Example BBC iPlayer URL that works:
https://www.bbc.co.uk/iplayer/episode/m0010s0w/panorama-online-abuse-why-do-you-hate-me
get-iplayer finds the following playlist URL:
https://vod-hls-uk.live.cf.md.bbci.co.uk/usp/auth/vod/piff_abr_full_hd/e87ac8-m0010s0v/vf_m0010s0v_d284745f-0e70-4763-a378-3c78576b7a97.ism.hlsv2.ism/vf_m0010s0v_d284745f-0e70-4763-a378-3c78576b7a97.ism.hlsv2-audio_eng_1=128000-video=5070000.m3u8?Expires=1634646622&Signature=j74cyVi0oOcLvl74uJJDTiMcPaZqB1AuiRAMqPiKi2Kar-q7hI5AUokDlQb~fVB8mGu3OjqYBy4SWHnCGbTHH7FyYTaq7F6kJhG2hEU8LRE-RLB~aoqkZcELUw4KYZj7HF8Odcel6ofsYYYtQK2aPctmOnIeJot6M-kQeC2JrtTqj6ZNR2ISmq9LwOeuEx1t5cLN-R6LwvpYCAYwBeFlNPWkXpE8wAcvQI-jI~cLO0tZRnG~hULShJBnG83mMheyBaf2h6CqnAgWIhugT0O2Jzfw3NbDstfq-5INZRGWHe1iIumxQNjK5Vi1NgOempm098mLQC12qq8GNHjXNW-TLQ__&Key-Pair-Id=K2VWLYKQ4HU1FJ
The standard 720p content in .mp4 downloaded with get-iplayer is 1.01GB, ffprobe shows:
Duration: 00:28:59.69, start: 0.000000, bitrate: 5037 kb/s Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 4895 kb/s, 50 fps, 50 tbr, 90k tbn, 100 tbc (default) Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)
The modified playlist URL for 1080p is:
https://vod-hls-uk.live.cf.md.bbci.co.uk/usp/auth/vod/piff_abr_full_hd/e87ac8-m0010s0v/vf_m0010s0v_d284745f-0e70-4763-a378-3c78576b7a97.ism.hlsv2.ism/vf_m0010s0v_d284745f-0e70-4763-a378-3c78576b7a97.ism.hlsv2-audio_eng_1=128000-video=12000000.m3u8?Expires=1634646622&Signature=j74cyVi0oOcLvl74uJJDTiMcPaZqB1AuiRAMqPiKi2Kar-q7hI5AUokDlQb~fVB8mGu3OjqYBy4SWHnCGbTHH7FyYTaq7F6kJhG2hEU8LRE-RLB~aoqkZcELUw4KYZj7HF8Odcel6ofsYYYtQK2aPctmOnIeJot6M-kQeC2JrtTqj6ZNR2ISmq9LwOeuEx1t5cLN-R6LwvpYCAYwBeFlNPWkXpE8wAcvQI-jI~cLO0tZRnG~hULShJBnG83mMheyBaf2h6CqnAgWIhugT0O2Jzfw3NbDstfq-5INZRGWHe1iIumxQNjK5Vi1NgOempm098mLQC12qq8GNHjXNW-TLQ__&Key-Pair-Id=K2VWLYKQ4HU1FJ
The 1080p version in .mp4 downloaded with youtube-dl using the modified playlist URL is 1.79GB, ffprobe shows:
Duration: 00:28:59.69, start: 0.000000, bitrate: 8882 kb/s Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 8742 kb/s, 50 fps, 50 tbr, 90k tbn, 100 tbc (default) Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)