Need help with Instagram Live stream segments merging

[KumaDon]

Hi everyone, I was trying to download an instagram live stream from https://www.instagram.com/matsumura_sayuri_official/live/ with storysaver app on android.
Unfortunately the app has completely broke since a month ago, so I tried to download by finding the mpd link with chrome:

https://instagram.fsin14-1.fna.fbcdn.net/hvideo-vll-rva/_nc_cat-103/v/rASdiKoHoihMB9DO...7259944265.mpd

Tried ffmpeg, yt-dlp, streamlink, but kept getting 403 forbidden error. As the stream was going to end I thought I'll just grab all the video/audio segments with IDM from:

video segments: https://instagram.fsin14-1.fna.fbcdn.net/hvideo-vll-rva/_nc_cat-103/v/rASdiKoHoihMB9DO...944265_0-*.m4v

audio segments: https://instagram.fsin14-1.fna.fbcdn.net/hvideo-vll-rva/_nc_cat-103/v/rASdiKoHoihMB9DO...944265_0-*.m4a

Surprisingly the segments are all downloadable after the stream ended...

The problem now is that I can't seem to merge the files together:

 ffmpeg -f concat -safe 0 -i mylist.txt -c copy video.mp4

got an error like this:

 ffmpeg version 5.1-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002321891dfc0] could not find corresponding track id 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002321891dfc0] could not find corresponding trex (id 1)
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002321891dfc0] could not find corresponding track id 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002321891dfc0] trun track id unknown, no tfhd was found
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002321891dfc0] error reading header
[concat @ 0000023218913940] Impossible to open '17982237259944265_0-0004947.m4v'
mylist.txt: Invalid data found when processing input

Can anyone help to see what's wrong with the segments, and is it actually possible to merge into a complete video file with the available segments? (I downloaded the video/audio init files as well, not sure whether its the correct one)

Link to the segment files:

Video: https://anonfiles.com/yfS4O3n3z0/Video_segments_rar

Audio: https://anonfiles.com/G7SdOcn1z5/Audio_segments_rar

[Silv3r]

https://forum.mobilism.org/viewtopic.php?f=1336&t=5149456
https://forum.mobilism.org/viewtopic.php?f=1336&t=5104981
https://forum.mobilism.org/viewtopic.php?f=429&t=5170735
https://forum.mobilism.org/viewtopic.php?f=429&t=5226049
https://forum.mobilism.org/viewtopic.php?f=429&t=5166508

[[ss]vegeta]

Can anyone help to see what's wrong with the segments

You might be missing an init file.

Scratch that, you have the init file inside, I just saw now.
When you use the type command in cmd you can concatenate the files. Dunno why ffmpeg fails and I don't feel like investigating (perhaps your init file is not the first one in the .txt document?).

[Attachment 70619 - Click to enlarge]

[leftballsitch]

any update on this? im getting the same error while trying to merge

[randomuser2023]

Yes need help as well. When using terminal commands (ffmpeg, streamlink, ytdlp) and downloading the mpd for the Instagram livestream it only downloads from the time you enter ie. If you enter in the middle of it it downloads from then onwards rather than from the beginning. How to download from the beginning? Is there a command like start index for m3u8 links? Also because not all accounts save livestreams to their account feed after they end so the only time to download them is in real time when they’re live.