Bug Report Segmentation fault with media source from current git code

[Juan Antonio Martínez]

Using git sources at May,2 on updated Fedora 25 (kernel 4.10.12, GNOME-X11 session, intel native driver)

Allways reproducible:
Starting on a fresh install ( just by rm'ing $HOME/.config/obs-studio)
Just open a Media source and choose any avi or mp4 file. It works
Exit program and try to launch again: obs segfaults

Console output:

[jantonio@server .config]$ obs-studio.sh
Attempted path: ../../data/obs-studio/locale/en-US.ini
Attempted path: ../../data/obs-studio/themes/Default.qss
Attempted path: ../../data/obs-studio/license/gplv2.txt
info: Processor: 4 logical cores
info: Processor: Intel(R) Core(TM) i3-3225 CPU @ 3.30GHz
info: Physical Memory: 15730MB Total
info: Kernel Version: Linux 4.10.12-200.fc25.x86_64
info: Distribution: Fedora 25
info: Portable mode: false
info: OBS 0.14.1-980-gf94cad4 (linux)
info: ---------------------------------
info: ---------------------------------
info: audio settings reset:
   samples per sec: 44100
   speakers:  2
info: ---------------------------------
info: Initializing OpenGL...
info: OpenGL version: 3.3 (Core Profile) Mesa 13.0.4
info: ---------------------------------
info: video settings reset:
   base resolution:  1920x1200
   output resolution: 1152x720
   downscale filter:  Bicubic
   fps:  30/1
   format:  NV12
info: ---------------------------------
libDeckLinkAPI.so: cannot open shared object file: No such file or directory
info: No blackmagic support
error: os_dlopen(libnvidia-encode.so.1->libnvidia-encode.so.1): libnvidia-encode.so.1: cannot open shared object file: No such file or directory

info: VLC found, VLC video source enabled
info: ---------------------------------
info:  Loaded Modules:
info:  vlc-video.so
info:  text-freetype2.so
info:  rtmp-services.so
info:  obs-x264.so
info:  obs-transitions.so
info:  obs-outputs.so
info:  obs-libfdk.so
info:  obs-filters.so
info:  obs-ffmpeg.so
info:  linux-v4l2.so
info:  linux-pulseaudio.so
info:  linux-decklink.so
info:  linux-capture.so
info:  linux-alsa.so
info:  image-source.so
info:  frontend-tools.so
info: ==== Startup complete ===============================================
error: Service '' not found
info: All scene data cleared
info: ------------------------------------------------
info: pulse-input: Server name: 'pulseaudio 10.0'
error: pulse-input: An error occurred while getting the source info!
info: pulse-input: Server name: 'pulseaudio 10.0'
error: pulse-input: An error occurred while getting the source info!
info: [Media Source 'Media Source']: settings:
   input:  /home/jantonio/Vídeos/pdae.avi
   input_format:  (null)
   is_looping:  yes
   is_hw_decoding:  no
   is_clear_on_media_end:  yes
   restart_on_activate:  yes
   close_when_inactive:  no
info: Switched to scene 'Scene'
info: ------------------------------------------------
info: Loaded scenes:
info: - scene 'Scene':
info:  - source: 'Media Source' (ffmpeg_source)
info: ------------------------------------------------
/home/jantonio/bin/obs-studio.sh: línea 4: 22897 Segmentation fault  (`core' generado) LANG=C ./obs

I've tested with several videos and video formats. Seems that there is some problem with scene restoration from Media source

¿Any help?
Thanks in advance
Juan Antonio

 

[Juan Antonio Martínez]

Now works again (¿perhaps by mean of pull request #907? )

UPDATE: May 8,2017
Sorry, no luck yet. Sometimes works, other crashes. Debug log shows nothing apart my first post

Any hint to help finding error?

Juan Antonio

 

[David Carver]

Are you using the Media Source? If so I have seen this happen on Linux when the media source is set to Open even when it isn't the active view. The only way I got around this was to manually go into the configuration json file for this, and remove the offending source from the scene, and then re-add it back with OBS with the close the media source when not active.

 

[Juan Antonio Martínez]

Yes: I also needed to clear source entry in configuration to get obs running back....I think it's a configuration problem too.

Not sure that this is the problem, but here comes a patch to fix a variable not to being default set in Linux/Mac:

--- plugins/obs-ffmpeg/obs-ffmpeg-source.c.orig   2017-05-11 08:32:44.017440248 +0200
+++ plugins/obs-ffmpeg/obs-ffmpeg-source.c   2017-05-11 08:40:53.442690025 +0200
@@ -85,6 +85,8 @@
   obs_data_set_default_bool(settings, "restart_on_activate", true);
#if defined(_WIN32)
   obs_data_set_default_bool(settings, "hw_decode", true);
+#else
+   obs_data_set_default_bool(settings, "hw_decode", false);
#endif
}

Additionally, when adding Media source, configuration file does not store every properties, just declared. If I manually set/unset every properties in dialog, then associated source in configuration file stores every ones.... and then obs never hangs ( at least I've not been able to crash )

( or when in crash state, adding every missing properties for media source makes obs work again )
Expect this helps