chozu, 25 days ago

@psykose ffmpeg -i psykose.mp4 -c copy psykose.mkv

psykose, 25 days ago

@chozu yea but this doesn't help you when the thing you are downloading is a torrent that is mp4

chozu, 25 days ago

@psykose oh I was just remuxing you for fun I didn't mean anything

is this about metadata being at the end of mp4 files or something then?

psykose, 25 days ago

@chozu not even necessarily at the end, the moov atom could be anywhere afaik

psykose, 25 days ago

@chozu shit file format

chozu, 25 days ago

@psykose :notlikemiya: oh no

psykose, 25 days ago

@chozu yeah it's anything but streamable

psykose, 25 days ago

@chozu also fun quirk- you've probably seen -movflags +faststart (it puts moov at the start of the file), without which web players might not play it because if they don't get the moov atom in the first fetch they will just abort

...and for some reason my pc is cursed and does like the worlds tiniest transfer on first fetch for anything on the web, so any mp4 without faststart never plays for me in browser xD

psykose, 25 days ago

@chozu mkv/webm intrinsically don't have this issue

lanodan, 25 days ago

@psykose @chozu Makes me wonder why it was designed this way, specially as MP4 goes back to pre-SSD era where seeking into a file until you find that cursed moov atom is just horribly expansive.

psykose, 25 days ago

@lanodan @chozu media is always cursed don't question it

td, 25 days ago

@lanodan @chozu @psykose Because it is the lowest overhead, strictly speaking the index and block headers are redundant. Also it's only a couple of seeks to find the moov box even if it's at the end of the file.

mia, 25 days ago

@td @lanodan @chozu @psykose i keep telling people to use -movflags +faststart to put the moov atom at the start of the file

wader, 25 days ago

@psykose @chozu hook up avio to libtorrent and get remux'in

psykose, 25 days ago

@wader @chozu grroooaaannn

psykose, 25 days ago

@wader @chozu also lol: i have an mp4 at 99.8% completion rn and it still refuses to play