Problem with fragmented mp4

[suckitdry]

Hi, I downloaded a fragmented mp4 video, after inspecting it with mp4 viewer it looks something like this:
ftyp-moov-mdat-moof-mdat-moof-mdat-moof-...
So after the moov box there is a long sequence of mdat-moof pairs up to the end of file.I wanted to play this video from the net with libvlc, that is, by reading directly from memory through the libvlc_media_new_callbacks function but there is a problem, or perhaps more than a problem. Apparently libvlc tries to download all of the video first before playing it. I suppose that's because it is unable to seek in this context. And sitting to wait until it downloads maybe gigabytes of data is not a good idea. In this scenario, is there a way to tell libvlc to start playing inmediately from available data in memory instead of downloading/seeking the entire video first?

[mfkl]

Apparently libvlc tries to download all of the video first before playing it

I don't think that's true, can you share your code?

[suckitdry]

I use the same code shown here: https://forum.videolan.org/viewtopic.php?t=127796
It works well when you load the entire video into memory, but the problem comes when you try to play from an arbitrary position when the whole video is not available, for example from a remote host. As i said earlier, I think it is because the moov box lacks the tables which enable seeking (like the stts, stsz, stco and similar), forcing libvlc to parse the entire video