I am using Lubuntu linux 18.04LTS, VLC 3.0.8 trying to record via vlc a video stream from a security camera and so far have not had success. I tried using the GUI "Convert" but despite choosing mp4, it seems to only play back as an mp3. Then I thought the command line might work, but I haven't found a clear tutorial in how to set up the right parameters. The closest I've gotten is this, which is:
vlc -vvv rtsp://@192.168.0.xyz:XXXX/videofeed --sout="#transcode{vcodec=h264,acodec=mpga,ab=128,channels=2,samplerate=44100,scodec=none}:file{mux=mp4,dst=/media/my/external/hard/disk/yard-01.mp4,no-overwrite}" :no-sout-all :sout-keep
The problem is the file created is not usable/readable. Using Gnome MPV player, I get "Format not recognized." And it doesn't play. Xine seems to play it, but treat it as a silent audio file (guessing at that). When I look at the command line messages, I get a long scroll of "mp4 mux warning: i_length <= 0" which, I am guessing, cannot be good.
I'm the first to admit I don't know much about the options in that line above...just cut them from other folks' posts who said they got this to work. Is there something I can tweak above to make it record video properly? It doesn't have to be mp4, just something decent that will allow me to get a good feed for security purposes.
I should add that the streaming part works fine in VLC. I have a nice feed whenever I want via live streaming. So I know the hardware and access part is fine. It's just the transcoding that I think is going awry.
Any and all help greatly appreciated. Thank you in advance!
