Not highest quality video is played

[mzso]

Hi!

I noticed that I don't get the highest res/quality video during playback. If I play an 1600 * 1200 video only the 1440 * 1080 video play even though the former resolution is available. I checked with youtube-dl.

Example video: https://www.youtube.com/watch?v=KCoQKtjiWJw

[YePpHa]

Seems kind of strange. The 1440x1080 and 1600x1200 both has the 1080p label. If this need to be properly fixed I need to make it go through ytplayer.config.args.adaptive_fmts and group by quality_label, type and fps. The only concern I have is that it could break some stuff.

[
  {
    "itag": "264",
    "type": "video/mp4;+codecs=\"avc1.640028\"",
    "url": "...",
    "index": "712-2663",
    "fps": "25",
    "bitrate": "6249083",
    "init": "0-711",
    "size": "1600x1200",
    "lmt": "1425159597508534",
    "xtags": "",
    "quality_label": "1080p",
    "clen": "479377626",
    "projection_type": "1"
  },
  {
    "itag": "271",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "243-3736",
    "fps": "25",
    "bitrate": "5692015",
    "init": "0-242",
    "size": "1600x1200",
    "lmt": "1426684285446537",
    "xtags": "",
    "quality_label": "1080p",
    "clen": "260669701",
    "projection_type": "1"
  },
  {
    "itag": "137",
    "type": "video/mp4;+codecs=\"avc1.640028\"",
    "url": "...",
    "index": "713-2664",
    "fps": "25",
    "bitrate": "2108560",
    "init": "0-712",
    "size": "1440x1080",
    "lmt": "1425159402141455",
    "xtags": "",
    "quality_label": "1080p",
    "clen": "185388404",
    "projection_type": "1"
  },
  {
    "itag": "248",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "243-3725",
    "fps": "25",
    "bitrate": "2522451",
    "init": "0-242",
    "size": "1440x1080",
    "lmt": "1426683962891669",
    "xtags": "",
    "quality_label": "1080p",
    "clen": "122773726",
    "projection_type": "1"
  },
  {
    "itag": "299",
    "type": "video/mp4;+codecs=\"avc1.64002a\"",
    "url": "...",
    "index": "713-2664",
    "fps": "50",
    "bitrate": "3603607",
    "init": "0-712",
    "size": "1440x1080",
    "lmt": "1425159769582482",
    "xtags": "",
    "quality_label": "1080p50",
    "clen": "306078051",
    "projection_type": "1"
  },
  {
    "itag": "303",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "243-3100",
    "fps": "50",
    "bitrate": "2694340",
    "init": "0-242",
    "size": "1440x1080",
    "lmt": "1426684515995568",
    "xtags": "",
    "quality_label": "1080p50",
    "clen": "178548915",
    "projection_type": "1"
  },
  {
    "itag": "136",
    "type": "video/mp4;+codecs=\"avc1.4d401f\"",
    "url": "...",
    "index": "710-2661",
    "fps": "25",
    "bitrate": "1151865",
    "init": "0-709",
    "size": "960x720",
    "lmt": "1425158905067022",
    "xtags": "",
    "quality_label": "720p",
    "clen": "99680458",
    "projection_type": "1"
  },
  {
    "itag": "247",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "243-3712",
    "fps": "25",
    "bitrate": "1474981",
    "init": "0-242",
    "size": "960x720",
    "lmt": "1426683820191352",
    "xtags": "",
    "quality_label": "720p",
    "clen": "71088677",
    "projection_type": "1"
  },
  {
    "itag": "298",
    "type": "video/mp4;+codecs=\"avc1.4d4020\"",
    "url": "...",
    "index": "710-2661",
    "fps": "50",
    "bitrate": "2060133",
    "init": "0-709",
    "size": "960x720",
    "lmt": "1425159055214864",
    "xtags": "",
    "quality_label": "720p50",
    "clen": "181409739",
    "projection_type": "1"
  },
  {
    "itag": "302",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "243-3090",
    "fps": "50",
    "bitrate": "1542401",
    "init": "0-242",
    "size": "960x720",
    "lmt": "1426683811627312",
    "xtags": "",
    "quality_label": "720p50",
    "clen": "101827610",
    "projection_type": "1"
  },
  {
    "itag": "135",
    "type": "video/mp4;+codecs=\"avc1.4d401e\"",
    "url": "...",
    "index": "709-2660",
    "fps": "25",
    "bitrate": "636450",
    "init": "0-708",
    "size": "640x480",
    "lmt": "1425158792483133",
    "xtags": "",
    "quality_label": "480p",
    "clen": "51124696",
    "projection_type": "1"
  },
  {
    "itag": "244",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "243-3680",
    "fps": "25",
    "bitrate": "791504",
    "init": "0-242",
    "size": "640x480",
    "lmt": "1426683603643335",
    "xtags": "",
    "quality_label": "480p",
    "clen": "38790227",
    "projection_type": "1"
  },
  {
    "itag": "134",
    "type": "video/mp4;+codecs=\"avc1.4d4015\"",
    "url": "...",
    "index": "711-2662",
    "fps": "25",
    "bitrate": "331708",
    "init": "0-710",
    "size": "480x360",
    "lmt": "1425158661541805",
    "xtags": "",
    "quality_label": "360p",
    "clen": "24607505",
    "projection_type": "1"
  },
  {
    "itag": "243",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "243-3631",
    "fps": "25",
    "bitrate": "474090",
    "init": "0-242",
    "size": "480x360",
    "lmt": "1426683565193592",
    "xtags": "",
    "quality_label": "360p",
    "clen": "23508844",
    "projection_type": "1"
  },
  {
    "itag": "133",
    "type": "video/mp4;+codecs=\"avc1.4d400d\"",
    "url": "...",
    "index": "674-2625",
    "fps": "25",
    "bitrate": "265521",
    "init": "0-673",
    "size": "320x240",
    "lmt": "1425158616607091",
    "xtags": "",
    "quality_label": "240p",
    "clen": "25177546",
    "projection_type": "1"
  },
  {
    "itag": "242",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "242-3583",
    "fps": "25",
    "bitrate": "247456",
    "init": "0-241",
    "size": "320x240",
    "lmt": "1426683450862599",
    "xtags": "",
    "quality_label": "240p",
    "clen": "12899425",
    "projection_type": "1"
  },
  {
    "itag": "160",
    "type": "video/mp4;+codecs=\"avc1.4d400c\"",
    "url": "...",
    "index": "673-2624",
    "fps": "13",
    "bitrate": "114934",
    "init": "0-672",
    "size": "192x144",
    "lmt": "1425158595858391",
    "xtags": "",
    "quality_label": "144p",
    "clen": "11287331",
    "projection_type": "1"
  },
  {
    "itag": "278",
    "type": "video/webm;+codecs=\"vp9\"",
    "url": "...",
    "index": "241-3586",
    "fps": "13",
    "bitrate": "147164",
    "init": "0-240",
    "size": "192x144",
    "lmt": "1426683519559854",
    "xtags": "",
    "quality_label": "144p",
    "clen": "8000299",
    "projection_type": "1"
  },
  {
    "itag": "140",
    "type": "audio/mp4;+codecs=\"mp4a.40.2\"",
    "url": "...",
    "index": "592-1607",
    "bitrate": "129703",
    "init": "0-591",
    "audio_sample_rate": "44100",
    "lmt": "1425158507813561",
    "xtags": "",
    "clen": "13097944",
    "projection_type": "1"
  },
  {
    "itag": "171",
    "type": "audio/webm;+codecs=\"vorbis\"",
    "url": "...",
    "index": "4452-5842",
    "bitrate": "111526",
    "init": "0-4451",
    "audio_sample_rate": "44100",
    "lmt": "1426683428210850",
    "xtags": "",
    "clen": "9994182",
    "projection_type": "1"
  },
  {
    "itag": "249",
    "type": "audio/webm;+codecs=\"opus\"",
    "url": "...",
    "index": "272-1661",
    "bitrate": "57116",
    "init": "0-271",
    "audio_sample_rate": "48000",
    "lmt": "1426683431891547",
    "xtags": "",
    "clen": "4998058",
    "projection_type": "1"
  },
  {
    "itag": "250",
    "type": "audio/webm;+codecs=\"opus\"",
    "url": "...",
    "index": "272-1662",
    "bitrate": "73775",
    "init": "0-271",
    "audio_sample_rate": "48000",
    "lmt": "1426683423653621",
    "xtags": "",
    "clen": "6129038",
    "projection_type": "1"
  },
  {
    "itag": "251",
    "type": "audio/webm;+codecs=\"opus\"",
    "url": "...",
    "index": "272-1662",
    "bitrate": "161398",
    "init": "0-271",
    "audio_sample_rate": "48000",
    "lmt": "1426683426459600",
    "xtags": "",
    "clen": "13952548",
    "projection_type": "1"
  }
]

[mzso]

@YePpHa commented on 2019. márc. 26. 21:25 CET:

Seems kind of strange. The 1440x1080 and 1600x1200 both has the 1080p label.

That's been like that for several years. Though previously it would play the 1920 * 1200 and 1600 * 1200 steams when they were available (if I remember correctly). Now only 1920 * 1200 plays (example).
Interestingly they're the very same format code 271/264. 1600 * 1200 is just neglected for some reason.

[YePpHa]

I wonder what would happen if the quality_label is changed to 1200p for 1920x1200 and 1600x1200 respectively. It might be possible that it will become a quality option if they didn't hard code the qualities in the player.

[mzso]

@YePpHa commented on 2019. márc. 26. 22:50 CET:

I wonder what would happen if the quality_label is changed to 1200p for 1920x1200 and 1600x1200 respectively. It might be possible that it will become a quality option if they didn't hard code the qualities in the player.

It might be that once it was. I'm not sure. It might work.