@DanOscarsson, I don't know if those streams are available now (although they could be via the API). The web player only seems to offer the default quality (video_alt2 in Streamlink which is 640x360) and a limited bandwidth option which must be the video quality in Streamlink which is 416x234.
Looking at what the API returns, for example, for HLS:
$ curl --proxy 'socks5://localhost:8888' 'https://svt-secure-c.akamaized.net/secure/svt1/master.m3u8?defaultSubLang=1'
#EXTM3U
#EXT-X-VERSION:4
#EXT-X-INDEPENDENT-SEGMENTS
#EXT-X-MEDIA:TYPE=AUDIO,URI="5eff9010-33e6-4944-b906-1e885e20d659/hls-a0/a0.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls",GROUP-ID="stereo",LANGUAGE="sv",NAME="Svenska",DEFAULT=YES,AUTOSELECT=YES,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="5eff9010-33e6-4944-b906-1e885e20d659/hls-a1/a1.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls",GROUP-ID="stereo",LANGUAGE="sv-x-tal",NAME="Uppläst undertext",DEFAULT=NO,AUTOSELECT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=VIDEO,GROUP-ID="video",NAME="Video",DEFAULT=YES,AUTOSELECT=YES
#EXT-X-MEDIA:TYPE=SUBTITLES,URI="5eff9010-33e6-4944-b906-1e885e20d659/hls-s0/s0.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls",GROUP-ID="subs",LANGUAGE="sv",NAME="Svenska",DEFAULT=NO,AUTOSELECT=YES,CHARACTERISTICS="public.accessibility.transcribes-spoken-dialog,public.accessibility.describes-music-and-sound"
#EXT-X-STREAM-INF:BANDWIDTH=2699000,AVERAGE-BANDWIDTH=1933000,CODECS="avc1.64001F,mp4a.40.2",RESOLUTION=960x540,FRAME-RATE=50.0,AUDIO="stereo",VIDEO="video",SUBTITLES="subs",CLOSED-CAPTIONS=NONE
5eff9010-33e6-4944-b906-1e885e20d659/hls-v2/v2.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls
#EXT-X-STREAM-INF:BANDWIDTH=585000,AVERAGE-BANDWIDTH=472000,CODECS="avc1.42C015,mp4a.40.2",RESOLUTION=416x234,FRAME-RATE=50.0,AUDIO="stereo",VIDEO="video",SUBTITLES="subs",CLOSED-CAPTIONS=NONE
5eff9010-33e6-4944-b906-1e885e20d659/hls-v0/v0.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls
#EXT-X-STREAM-INF:BANDWIDTH=1286000,AVERAGE-BANDWIDTH=1020000,CODECS="avc1.64001F,mp4a.40.2",RESOLUTION=640x360,FRAME-RATE=50.0,AUDIO="stereo",VIDEO="video",SUBTITLES="subs",CLOSED-CAPTIONS=NONE
5eff9010-33e6-4944-b906-1e885e20d659/hls-v1/v1.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls
#EXT-X-STREAM-INF:BANDWIDTH=5120000,AVERAGE-BANDWIDTH=3874000,CODECS="avc1.640020,mp4a.40.2",RESOLUTION=1280x720,FRAME-RATE=50.0,AUDIO="stereo",VIDEO="video",SUBTITLES="subs",CLOSED-CAPTIONS=NONE
5eff9010-33e6-4944-b906-1e885e20d659/hls-v3/v3.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls
#EXT-X-STREAM-INF:BANDWIDTH=6334000,AVERAGE-BANDWIDTH=5035000,CODECS="avc1.640020,mp4a.40.2",RESOLUTION=1280x720,FRAME-RATE=50.0,AUDIO="stereo",VIDEO="video",SUBTITLES="subs",CLOSED-CAPTIONS=NONE
5eff9010-33e6-4944-b906-1e885e20d659/hls-v4/v4.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls
#EXT-X-I-FRAME-STREAM-INF:URI="5eff9010-33e6-4944-b906-1e885e20d659/hls-v0/v0-i.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls",BANDWIDTH=65000,CODECS="avc1.42C015",RESOLUTION=416x234
#EXT-X-I-FRAME-STREAM-INF:URI="5eff9010-33e6-4944-b906-1e885e20d659/hls-v1/v1-i.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls",BANDWIDTH=187000,CODECS="avc1.64001F",RESOLUTION=640x360
#EXT-X-I-FRAME-STREAM-INF:URI="5eff9010-33e6-4944-b906-1e885e20d659/hls-v2/v2-i.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls",BANDWIDTH=282000,CODECS="avc1.64001F",RESOLUTION=960x540
#EXT-X-I-FRAME-STREAM-INF:URI="5eff9010-33e6-4944-b906-1e885e20d659/hls-v3/v3-i.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls",BANDWIDTH=399000,CODECS="avc1.640020",RESOLUTION=1280x720
#EXT-X-I-FRAME-STREAM-INF:URI="5eff9010-33e6-4944-b906-1e885e20d659/hls-v4/v4-i.m3u8?aka_me_session_id=AAAAAAAAAAD4AYFjAAAAAGMhreGmoGoaF73iHC3bHBPM3kZC5TfTv8ctiSdtaHLS4vpSVdN56FdTDrFEbWYOacbkiQ%2f7jUbL&aka_media_format_type=hls",BANDWIDTH=509000,CODECS="avc1.640020",RESOLUTION=1280x720
would seem to indicate more resolutions, but it seems they only resolve to two:
$ streamlink --http-proxy 'socks5://localhost:8888' 'https://svt-secure-c.akamaized.net/secure/svt1/master.m3u8?defaultSubLang=1'
[cli][info] Found matching plugin hls for URL https://svt-secure-c.akamaized.net/secure/svt1/master.m3u8?defaultSubLang=1
Available streams: video, video_alt2