[FFmpeg-user] how do I list the devices?

[Ricardo Kleemann]

Hi Moritz

> On Jun 20, 2015, at 11:01 AM, Moritz Barsnick <barsnick at gmx.net> wrote:
> 
> On Sat, Jun 20, 2015 at 09:56:13 -0700, Ricardo Kleemann wrote:
>> $ /usr/local/bin/ffmpeg -devices
> 
> What does "-list_devices" show you now? Is the qtkit indev of any use
> to you? (I don't have a Mac or know much about it, but if it knows both
> your devices, they show both be presented to ffmpeg as well.)
> 

I was hopeful this time but still having troubles. This is what I see:

$ ffmpeg -f avfoundation -list_devices true -i ""
ffmpeg version N-73015-g8edc17b Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
  configuration: --enable-nonfree --enable-gpl --enable-version3 --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libfaac --enable-libxvid --enable-libx264 --enable-libvpx --enable-hardcoded-tables --enable-shared --enable-pthreads
  libavutil      54. 27.100 / 54. 27.100
  libavcodec     56. 41.100 / 56. 41.100
  libavformat    56. 37.100 / 56. 37.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 17.100 /  5. 17.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.100 /  1.  2.100
  libpostproc    53.  3.100 / 53.  3.100
[AVFoundation input device @ 0x7fcd3ae00960] AVFoundation video devices:
[AVFoundation input device @ 0x7fcd3ae00960] [0] FaceTime HD Camera (Built-in)
[AVFoundation input device @ 0x7fcd3ae00960] [1] Capture screen 0
[AVFoundation input device @ 0x7fcd3ae00960] AVFoundation audio devices:
[AVFoundation input device @ 0x7fcd3ae00960] [0] Blackmagic Audio
[AVFoundation input device @ 0x7fcd3ae00960] [1] Built-in Input
: Input/output error


The Blackmagic shows for Audio, but no for video. I tried to see if at least the “capture screen” would be the one but that’s a special device which captures the current screen (output to the screen/monitor)

I don’t know what the Input/output error at the end means… but I’m not able to get the Blackmagic video device unfortunately.

I know you’re not a Mac person, is anyone else able to help?

thanks
Ricardo