Recherche avancée

Sur d’autres sites (5923)

• raspberrypi with Canon over network

  28 février 2021, par Troy Robinson

  Been trying to solve this for a few days. This is one of my first questions so please try not to chew my head off. It's got alot of bone in it anyways.

  


  I've got a Pi3 connected via USB to a Canon M100, works perfectly using gphoto. What I'm trying to do is get some live view - previewing going on over my network. Code I run on the Pi

  


  gphoto2 —stdout —capture-movie | ffmpeg -i - -vcodec mjpeg -pix_fmt yuv420p -threads 0 -f v4l2 /dev/video0 | cvlc v4l2 :///dev/video —sout '#transcodevcodec=mjpeg,vb=800,acodec=none:rtpsdp=rtsp ://:8554/'

  


  Everything up until the 2nd pipe works...I can view the mjpeg fine locally on the pi using vlc. Maybe my understanding of how this is working is not thorough enough, but I've tried every combination of switches and commands I can think of to send this over the network. Essentially how can I broadcast v4l2 :///dev/video0

  


  Maybe pipe | to | isn't the correct approach ? Not enough time ?

  


  On my windows machine (Windows 10) I open VLC, open the Pi's 192.168.0.20:8554/ and it is unable to open the MRL.

  


  Any ideas or thoughts would be most appreciated...I'm not looking to have anyone solve this, just a pointer in the right direction would be amazing. Am I on the right track here ?

  


  Thanks !!!

  


  T,

  


• is there any functional build of ffmpeg to android

  11 mai 2018, par Rafael Lima

  I’ve searching the last 3 days for a usable API for android access ffmpeg.
  Since FFMpeg group doesn’t release an official lib for android I found several paralel projects trying to build it.

  So it brings me to my nightmare that is called compile.

  i’ve followed all these tutorials : https://trac.ffmpeg.org/wiki/CompilationGuide/Android

  And others found in different places. but none of them build

  NONE OF THEM IS LESS THAN 3 YEARS OLD

  Sorry for the caps, but it is frustrating... no ffmpeg build projects I found deal with nkd above 14 and google doesn’t keep in archive nkds older than that, so even if i agree with get all outdated libraries source i cant reproduce de compiler i cant download the same ndk...

  The only api i manage to download with a functional build of ffmpeg probably was compiled without some codecs, because on my tests i can only handle few types of videos

  ===============================================================

  The question is, does anyone know an actual, stable, project for building ffmpeg to android ?

  I’m even willing to pay in order to get a working version of it

• Guardianproject FFMpeg Android library Clip path always go wrong

  15 mars 2016, par Eric Ta

  I am trying to work with guardianproject with FFMpeg from here
  https://github.com/guardianproject/android-ffmpeg-java

  there is a Clip object which need to be passed the file path into it

  My stored video file is "/storage/emulated/0/00Testing/clip.mp4"
  so I create a new clip object as :

  Clip clipVideo = new Clip("/storage/emulated/0/00Testing/clip.mp4");

  but the clipVideo.duration always return "-1", it mean my path is wrong !
  I am sure that file is exist !

  please help me, I lost 2 days for this stuff !

  thanks a lot !!