In the downloaded mp4 file video and audio do not match if video longer than 10 minutes from kinescope.io

[MantisaAP]

Your question

Hi all,
I have an issue with downloding video from kinescope.io. When I tring to save shorts video (no longer than 10m) all is ok
when i downlod longer files, file is save but first 2 m I see picture and hear audio, and afte ~ 2m starts video and in the end of the video i see video without audio
I donload more than 30 video with the same problem, some of them tries more than 2 times and received the same problem.

More details about video:

Tab | 598756038 (incognito: false) -- | --

https://lesson.sshleb.ru/pl/teach/control/lesson/view?id=334369875 with 12 headers
/content/images/no-thumbnail.png
false
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/master.m3u8?expires=1748868487&token=
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/media.m3u8?quality=720&type=video
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/media.m3u8?quality=360&type=audio&lang=en
Mp4 b:Hls p:hls 1010.0090000000033s
H264 at 3057648, fps: 23.976, q:720, {"height":720,"width":1280}
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/master.m3u8?expires=1748868487&token=
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/media.m3u8?quality=480&type=video
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/media.m3u8?quality=360&type=audio&lang=en
Mp4 b:Hls p:hls 1010.0090000000033s
H264 at 1424616, fps: 23.976, q:480, {"height":480,"width":852}
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/master.m3u8?expires=1748868487&token=
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/media.m3u8?quality=360&type=video
https://kinescope.io/f23aa6ac-eb9f-43a3-89dd-fb4b0a3193f8/media.m3u8?quality=360&type=audio&lang=en
Mp4 b:Hls p:hls 1010.0090000000033s
H264 at 906720, fps: 23.976, q:360, {"height":360,"width":640}

Addon & CoApp version and details

version: 9.5.0.1
target: google
channel: stable
lang: uk
coapp: {"found":true,"new_version":false,"path":"C:\Program Files\DownloadHelper CoApp\vdhcoapp.exe","version":"2.0.19"}
license: {"unset":true}
platform: x86-64 win
UA: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36
{
"never_show_no_incognito_msg_again": true,
"view_options": {
"all_tabs": false,
"hide_downloaded": false,
"low_quality": false,
"show_button_clean": true,
"show_button_clean_all": false,
"show_button_convert_local": false,
"sort_by_status": true,
"sort_reverse": false
},
"open_count_store": 1,
"successfull_dl": 3
}

[Mattmjs]

From your links I was getting a video that was out of sync with the audio, like no picture comes up until 2 minutes has passed.
The audio is there from the start. Re encoding didn't seem to correct it. The video must use some weird encoding.