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Hi all,

I am part way through writing a plug-in based around the excellent libvlc. The plugin renders video frames to an off-screen openGL buffer for use externally. I have managed to get local video files working as desired (for a first pass at least), but have hit trouble streaming in videos. I am using the apple HLS test video: http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/sl.m3u8

Here are brief snippets of my approach:

- Calling 'libvlc_new' with: --ignore-config --no-video-title-show --http-caching=5000
- Using 'libvlc_media_new_location' passing in the URL to the stream
- Using 'libvlc_media_event_manager' to catch 'libvlc_MediaParsedChanged'
- Parsing the media with 'libvlc_media_parse_with_options' and the flag 'libvlc_media_parse_network'
- When 'libvlc_MediaParsedChanged' has calledback I am using 'libvlc_media_tracks_get' to get the resolution of the video...in order to create my openGL buffers.

The last point, number of tracks is always zero. If I keep polling I eventually get 8 subitems back in the media object.

My hunch is I am not enabling the adaptative module or similar...or maybe none of this is possible currently?!

Any help greatly appreciated! Apologies if I have not provided enough info...

Thanks,
Ste

A bit more info in case anyone can help my troubles...

My program log spits out...

looking for demux module matching "any": 63 candidates
MOD validation failed (ext=m3u8)
found valid M3U playlist
using demux module "playlist"

Whilst the same part from the vlc GUI (roughly) gives...

looking for demux module matching "any": 68 candidates
adaptative demux debug: opening playlist file (qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/sl.m3u8)
using demux module "adaptative"

So mine has less demux candidates, guessing one of those is the adaptative. Any advice as to why the difference?

Thanks,
Ste

Bit more info from the logging:

VLC media player - 3.0.0-git-20151220-0402 Vetinari
Copyright © 1996-2015 the VideoLAN team
revision 2.2.0-git-5734-g3a660dc
configured with ../extras/package/win32/../../../configure '--enable-update-check' '--enable-lua' '--enable-faad' '--enable-flac' '--enable-theora' '--enable-twolame' '--enable-quicktime' '--enable-avcodec' '--enable-merge-ffmpeg' '--enable-dca' '--enable-mpc' '--enable-libass' '--enable-x264' '--enable-schroedinger' '--enable-realrtsp' '--enable-live555' '--enable-dvdread' '--enable-shout' '--enable-goom' '--enable-caca' '--disable-sdl' '--enable-qt' '--enable-skins2' '--enable-sse' '--enable-mmx' '--enable-libcddb' '--enable-zvbi' '--disable-telx' '--enable-nls' '--host=x86_64-w64-mingw32' '--enable-debug' 'host_alias=x86_64-w64-mingw32'

Further digging...

Using the --list flag for both vlc.exe and my code (passed in to the function libvlc_new(...)):

vlc.exe gives (amongst many others)...
aiff AIFF demuxer
adaptative Unified adaptative streaming for DASH/HLS
win_msg Windows messages interface

Whilst libvlc spits out...
aiff AIFF demuxer
win_msg Windows messages interface

I also notice that:
mkv Matroska stream demuxer
.. is missing in my libvlc generated list. This is another demux plug-in dll (I noticed it missing because
it is the second largest sized file behind the adaptative dll).

Thanks to 'j-b' on the IRC channel, the solution to my troubles was to simply load the 'libgcc*.dll' found along side 'libvlc.dll. This is due to the following demux plug-ins being c++: adaptative, mkv, sid, mod, gme

Hope this helps someone in the future!

Thanks again j-b

No pb