How to download this video from Nicovideo website?

[vito123]

https://live.nicovideo.jp/watch/lv347297309

I used to download them successfully however something has been changed and it keep showing 403 access denied.

[Lupine Assassin]

https://sendgb.com/gOFla6CqhTA

[imr_saleh]

https://live.nicovideo.jp/watch/lv347297309

I used to download them successfully however something has been changed and it keep showing 403 access denied.

https://gofile.io/d/5zP7CV

use the stream detector addon + N_m3u8dl-re

[vito123]

https://live.nicovideo.jp/watch/lv347297309

I used to download them successfully however something has been changed and it keep showing 403 access denied.

https://gofile.io/d/5zP7CV
use the stream detector addon

Thanks, how did you download it when you got m3u8 link from the stream detector? Is it possible to record the livestream from the same website?

[vito123]

https://live.nicovideo.jp/watch/lv347297309

I used to download them successfully however something has been changed and it keep showing 403 access denied.

https://gofile.io/d/5zP7CV

use the stream detector addon + N_m3u8dl-re

Just tried it, it says Response status code does not indicate success: 403 (Forbidden). (1/10) and failed after 10 attempts

[imr_saleh]

N_m3u8DL-RE "https://assetdelivery.dlive.nicovideo.jp/hlsbid/vod/6828007e8f11a4e9d9b936aa/playlists/variants/4cd66e623484b0a0.m3u8?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9hc3NldGRlbGl2ZXJ5LmRsaXZlLm5pY292aWRlby5qcC9obHNiaWQvdm9kLzY4MjgwMDdlOGYxMWE0ZTlkOWI5MzZhYS8qIiwiQ29uZGl0aW9uIjp7IkRhdGVMZXNzVGhhbiI6eyJBV1M6RXBvY2hUaW1lIjoxNzQ3NjIxNjMwfX19XX0_&Signature=jXL3StunHCda8SSiaWXKRgXz5cY-fptFIBCsy2JRUQ0uCFB5lm6o0oeV7OmUoeTx-~sHlXlmj37mcB08iVDl4xaThu4v8~EArn10R4uhMPuq2UuqmutfxTt4s0D5pDpCIdev8aDMRIY6C6BTa3P1vlKOnkaOl~85UDcVm3LYStpFA7OJhut-4OiZ-4UiImABWD3lsgTKnwOsBWLx9Om27zsOXBggJZxRRtrDCWQqndgmXUFcio8po3RtVZTc3WfDbaChvfnuThDGJMDBC~az9UYDEROl0jpMArvogpMVVMdx3XZXzRVEbEN06zOut4M08xj9CVtlL2-mseEcGWhmgQ__&Key-Pair-Id=KRX7K7BTCDCJI" --header "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 Edg/135.0.0.0" --header "Cookie: nicosid=1747515788.359554051; audience_token=119288424600222_02b34c811e582f9ed6da6c9ebf9a955684093836; nicolivehistory=%5B347297309%5D; experimentalNicoliveColorTheme=light; dlive_bid=dlive_bid_t44V3PUcvHgFrelNYTc2e6M6ikcE2b_q" --header "Referer: https://live.nicovideo.jp/" --save-name "4cd66e623484b0a0" -mt -M format=mp4

this command works just fine on my side

[vito123]

N_m3u8DL-RE "https://assetdelivery.dlive.nicovideo.jp/hlsbid/vod/6828007e8f11a4e9d9b936aa/playlists/variants/4cd66e623484b0a0.m3u8?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9hc3NldGRlbGl2ZXJ5LmRsaXZlLm5pY292aWRlby5qcC9obHNiaWQvdm9kLzY4MjgwMDdlOGYxMWE0ZTlkOWI5MzZhYS8qIiwiQ29uZGl0aW9uIjp7IkRhdGVMZXNzVGhhbiI6eyJBV1M6RXBvY2hUaW1lIjoxNzQ3NjIxNjMwfX19XX0_&Signature=jXL3StunHCda8SSiaWXKRgXz5cY-fptFIBCsy2JRUQ0uCFB5lm6o0oeV7OmUoeTx-~sHlXlmj37mcB08iVDl4xaThu4v8~EArn10R4uhMPuq2UuqmutfxTt4s0D5pDpCIdev8aDMRIY6C6BTa3P1vlKOnkaOl~85UDcVm3LYStpFA7OJhut-4OiZ-4UiImABWD3lsgTKnwOsBWLx9Om27zsOXBggJZxRRtrDCWQqndgmXUFcio8po3RtVZTc3WfDbaChvfnuThDGJMDBC~az9UYDEROl0jpMArvogpMVVMdx3XZXzRVEbEN06zOut4M08xj9CVtlL2-mseEcGWhmgQ__&Key-Pair-Id=KRX7K7BTCDCJI" --header "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 Edg/135.0.0.0" --header "Cookie: nicosid=1747515788.359554051; audience_token=119288424600222_02b34c811e582f9ed6da6c9ebf9a955684093836; nicolivehistory=%5B347297309%5D; experimentalNicoliveColorTheme=light; dlive_bid=dlive_bid_t44V3PUcvHgFrelNYTc2e6M6ikcE2b_q" --header "Referer: https://live.nicovideo.jp/" --save-name "4cd66e623484b0a0" -mt -M format=mp4

this command works just fine on my side

I tried the code you posted, video and audio can be downloaded but they cannot be correctly recognized when mux together, the error says it cannot get the key.

11:31:55.643 WARN : [mov,mp4,m4a,3gp,3g2,mj2 @ 000002ebdb298e80] Could not find codec parameters for stream 0 (Video:
h264 (avc1 / 0x31637661), none, 1920x1080): unspecified pixel format
11:31:55.644 WARN : Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
11:31:55.674 WARN : [mp4 @ 000002ebdb303880] track 1: codec frame size is not set
11:31:55.683 WARN : [out#0/mp4 @ 000002ebdb29bdc0] Output file is empty, nothing was encoded
11:31:55.781 WARN : Cleaning files...
11:31:56.083 WARN : Rename to 4cd66e623484b0a0.mp4

[cedric8528]

Check that you have the latest version of ffmpeg.

You can try also with yt-dlp.

yt-dlp --no-part --restrict-filenames -N 8 --user-agent "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36" --add-header "Cookie:nicosid=1747544576.99354087; audience_token=119292719734559_4a6f709ab90430561b95196d7c2131e3058f6bf4; nicolivehistory=%5B347297309%5D; _gid=GA1.2.262800882.1747544586; _gat=1; experimentalNicoliveColorTheme=light; _ga_5LM4HED1NJ=GS2.1.s1747544588$o1$g0$t1747544588$j60$l0$h0$d0hDe71yeKO3kEdNHThEZ9uW4Xydd8tGPBg; _ga=GA1.1.2023845335.1747544586; _ga_BQN96KXPNS=GS2.1.s1747544589$o1$g0$t1747544589$j60$l0$h0$d4NGLiluFIGg4mkMXMjpdEofLxLhXfZtJcA; _ga_VQ08WLMK2H=GS2.2.s1747544591$o1$g0$t1747544591$j0$l0$h0; _gcl_au=1.1.569995958.1747544594; _yjsu_yjad=1747544595.415412a1-7d72-4b66-bb10-43fad0f0be5a; _tt_enable_cookie=1; _ttp=01JVGWCRET1J2PJNQ9J1N84EW6_.tt.1; ttcsid=1747544597173::zM7xXtd0lgw3sQJCrjxm.1.1747544597173; ttcsid_CFCCOPBC77U208RT9TAG=1747544597165::C8utWD8RBM_S0r-5N5pY.1.1747544600809; dlive_bid=dlive_bid_iUMDwxkyyCipQTRD9rzuTjeJMfg0pvKW" --referer "https://live.nicovideo.jp/" "https://assetdelivery.dlive.nicovideo.jp/hlsbid/vod/6828007e8f11a4e9d9b936aa/playlists/variants/0f299628d4fab921.m3u8?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9hc3NldGRlbGl2ZXJ5LmRsaXZlLm5pY292aWRlby5qcC9obHNiaWQvdm9kLzY4MjgwMDdlOGYxMWE0ZTlkOWI5MzZhYS8qIiwiQ29uZGl0aW9uIjp7IkRhdGVMZXNzVGhhbiI6eyJBV1M6RXBvY2hUaW1lIjoxNzQ3NjMwOTk2fX19XX0_&Signature=ii1N~1Fkl83muQWi5ZUp-FBTs~k7hpxs206qazYlBtQSIol68mvyYujF4uaKB4b7Sm5UvdYAYKMqI3QBjk~zQbH1S5hzTktCnTCuCuon3cABaV~HFmse2VkzlIEnwXvXVQKvLC0Ju1kULKQOZt6EKqs8~LBuVCTQ7ehrPcl9Suhp8~2mmFAj8r5scXZevy-simiDAi~mlX1I88fk2mIyTHIzulmlDoTr5Skv0h8bz22cuq7gag8pBeyxCsK9boO8fpoLX2gY7epprzlXHkT3vEgO4CYfH7CEJlh3Zpx2KEQiXfB6gRnwXqIII17mXMzpkFP0fMaxYEIb8Elkct6Xxw__&Key-Pair-Id=KRX7K7BTCDCJI"

[Attachment 87057 - Click to enlarge]

Anyway many extensions for browsers works to download your video.

For example Video Cococut Downloader


[Attachment 87058 - Click to enlarge]

[vito123]

Check that you have the latest version of ffmpeg.

You can try also with yt-dlp.

yt-dlp --no-part --restrict-filenames -N 8 --user-agent "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36" --add-header "Cookie:nicosid=1747544576.99354087; audience_token=119292719734559_4a6f709ab90430561b95196d7c2131e3058f6bf4; nicolivehistory=%5B347297309%5D; _gid=GA1.2.262800882.1747544586; _gat=1; experimentalNicoliveColorTheme=light; _ga_5LM4HED1NJ=GS2.1.s1747544588$o1$g0$t1747544588$j60$l0$h0$d0hDe71yeKO3kEdNHThEZ9uW4Xydd8tGPBg; _ga=GA1.1.2023845335.1747544586; _ga_BQN96KXPNS=GS2.1.s1747544589$o1$g0$t1747544589$j60$l0$h0$d4NGLiluFIGg4mkMXMjpdEofLxLhXfZtJcA; _ga_VQ08WLMK2H=GS2.2.s1747544591$o1$g0$t1747544591$j0$l0$h0; _gcl_au=1.1.569995958.1747544594; _yjsu_yjad=1747544595.415412a1-7d72-4b66-bb10-43fad0f0be5a; _tt_enable_cookie=1; _ttp=01JVGWCRET1J2PJNQ9J1N84EW6_.tt.1; ttcsid=1747544597173::zM7xXtd0lgw3sQJCrjxm.1.1747544597173; ttcsid_CFCCOPBC77U208RT9TAG=1747544597165::C8utWD8RBM_S0r-5N5pY.1.1747544600809; dlive_bid=dlive_bid_iUMDwxkyyCipQTRD9rzuTjeJMfg0pvKW" --referer "https://live.nicovideo.jp/" "https://assetdelivery.dlive.nicovideo.jp/hlsbid/vod/6828007e8f11a4e9d9b936aa/playlists/variants/0f299628d4fab921.m3u8?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9hc3NldGRlbGl2ZXJ5LmRsaXZlLm5pY292aWRlby5qcC9obHNiaWQvdm9kLzY4MjgwMDdlOGYxMWE0ZTlkOWI5MzZhYS8qIiwiQ29uZGl0aW9uIjp7IkRhdGVMZXNzVGhhbiI6eyJBV1M6RXBvY2hUaW1lIjoxNzQ3NjMwOTk2fX19XX0_&Signature=ii1N~1Fkl83muQWi5ZUp-FBTs~k7hpxs206qazYlBtQSIol68mvyYujF4uaKB4b7Sm5UvdYAYKMqI3QBjk~zQbH1S5hzTktCnTCuCuon3cABaV~HFmse2VkzlIEnwXvXVQKvLC0Ju1kULKQOZt6EKqs8~LBuVCTQ7ehrPcl9Suhp8~2mmFAj8r5scXZevy-simiDAi~mlX1I88fk2mIyTHIzulmlDoTr5Skv0h8bz22cuq7gag8pBeyxCsK9boO8fpoLX2gY7epprzlXHkT3vEgO4CYfH7CEJlh3Zpx2KEQiXfB6gRnwXqIII17mXMzpkFP0fMaxYEIb8Elkct6Xxw__&Key-Pair-Id=KRX7K7BTCDCJI"

[Attachment 87057 - Click to enlarge]

Anyway many extensions for browsers works to download your video.

For example Video Cococut Downloader


[Attachment 87058 - Click to enlarge]

The video download is okay, but the audio one failed

Deprecated Feature: Passing cookies as a header is a potential security risk; they will be scoped to the domain of the downloaded urls. Please consider loading cookies from a file or browser instead.
[generic] Extracting URL: https://assetdelivery.dlive.nicovideo.jp/hlsbid/vod/6828007e8f11a4e9d9b936aa/playlists...=KRX7K7BTCDCJI
[generic] 0f299628d4fab921: Downloading webpage
[generic] 0f299628d4fab921: Downloading m3u8 information
[generic] 0f299628d4fab921: Checking m3u8 live status
[info] 0f299628d4fab921: Downloading 1 format(s): 6000+trial-audio-96Kbps-Main_Audio
[hlsnative] Downloading m3u8 manifest
WARNING: Live HLS streams are not supported by the native downloader. If this is a livestream, please add "--downloader ffmpeg --hls-use-mpegts" to your command
[hlsnative] Total fragments: 1267
[download] Destination: 0f299628d4fab921-[0f299628d4fab921].f6000.mp4
[download] 100% of 5.02GiB in 00:15:34 at 5.50MiB/s
[hlsnative] Downloading m3u8 manifest
WARNING: Live HLS streams are not supported by the native downloader. If this is a livestream, please add "--downloader ffmpeg --hls-use-mpegts" to your command
[hlsnative] Total fragments: 1267
[download] Destination: 0f299628d4fab921-[0f299628d4fab921].ftrial-audio-96Kbps-Main_Audio.mp4
[download] 1.6% of ~ 100.65MiB at 291.79KiB/s ETA 06:18 (frag 21/1267)ERROR: unable to download video data: HTTP Error 403: Forbidden

[cedric8528]

Get a fresh link with StreamDetector Addon and launch again yt-dlp