On Sun, 16 May 2021, 12:27 Rob Hallam, <ffm...@roberthallam.com> wrote:
> On Sun, 16 May 2021 at 07:11, Martin Woolley <mar...@woolleynet.com> > wrote: > > > Would you mind educating me (or helping me educate myself)? What is HXVF > / > > HXVS / HXVT and is there a specification I can read covering this? > > There are some potentially interesting reads searching for those terms: > > - https://spitzner.org/kkmoon.html - "Cheap Chinese camera garbled .264 > files" > - a VLC ticket: https://trac.videolan.org/vlc/ticket/22935 > - the above leads to https://gitlab.com/mbunkus/mkvtoolnix/-/issues/2146 > > The first and third links include workarounds to strip unwanted bumph from > the headers there, but I don't know if this also applies to your files. > > Uneducated guesses are often unhelpful, but at a quick glance it seems to > me > that the common element here is IP cameras. In my admittedly limited > experience they can have some odd behaviour, like being tied to Internet > Explorer / ActiveX (!!); I've heard at other times they want you to use > their > own app. I'm not sure if this is a deliberate attempt at lock-in or a > result of > odd tooling during development. > > In any case, expecting standards-compliant behaviour from those devices > will lead to disappointment. > > No doubt someone with more experience can fill in the blanks in my > amateur guesses. > > Cheers, > Rob > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > The camera I have which is producing these h265 and h264 files is an ieGeek 5mp camera. It supports various mobile apps (including one I wrote myself, using libvlc for streaming support). The live stream can be viewed in Chrome too, not just IE. I looked at the web application and found its using a standard HTML5 Canvas element and an open source JavaScript library which doubtless holds clues. I've not had time to look at it yet but here it is: https://github.com/strukturag/libde265.js I've seen most of those posts and the general conclusion when faced with files which cannot be played using the usual players is that somehow the cameras are bad and not standards compliant. But is this true or are they simply using something which is uncommon or bleeding edge? I'd very much like to know more about HXVF /HXVS / HXVT as specified in the issue that has been logged: https://trac.ffmpeg.org/ticket/9245 Cheers Martin _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
