[FFmpeg-user] ffmpeg and multiple outputs

[MrNice]

On 03/08/15 11:49, MrNice wrote:
> 
> 
> On 03/08/15 09:23, Christian Ebert wrote:
>> * Moritz Barsnick on Monday, August 03, 2015 at 09:48:20 +0200
>>> On Sun, Aug 02, 2015 at 17:51:39 -0700, Ricardo Kleemann wrote:
>>>> Good point, how would I display ffmpeg on OS X? I’m not quite sure
>>>> what the output device would be?
>>>
>>> The output device "sdl" is the first that comes to mind.
>>>
>>> $ ffmpeg -i $infile -f sdl "SDL output"
>>> and you can add another output, i.e. to file, after those arguments.
>>>
>>> Moritz
>>>
>>> P.S.: You may have to add "-pix_fmt yuv420p" to get it to work,
>>>      depending on the input format. I believe my sdl didn't like
>>>      another format, and ffmpeg didn't convert automatically.
>>
>> Almost, it needs yuyv422:
>>
>> $ ffmpeg -i $infile -pix_fmt yuyv422 -f sdl "SDL Output"
>>
> 
> This a feature I need as well!
> I tried on my Fedora 22 PC but I get the error:
> 
> ./ffmpeg -debug 1 -f pulse -ar 44100 -ac 2 -channel_layout stereo
> -thread_queue_size 512 -i alsa_input.pci-0000_00_14.2.analog-stereo -f
> v4l2 -ts mono2abs -channel 1 -video_size 720x576 -pix_fmt yuyv422
> -thread_queue_size 512 -i /dev/video0 -f sdl "SDL output" -c:v libx264
> -preset slower -qp 0 -pix_fmt yuv422p -c:a pcm_s16le
> /Store3/Test/t_`date +%Y%m%d_%H%M`.mkv
> ....
> Successfully opened the file.
> Parsing a group of options: output file SDL output.
> Applying option f (force format) with argument sdl.
> Successfully parsed a group of options.
> Opening an output file: SDL output.
> [NULL @ 0x3142b80] Requested output format 'sdl' is not a suitable
> output format
> SDL output: Invalid argument
> 
> SDL is installed. Do I need to compile with a SDL option? or there is
> another output format?
> _______________________________________________


Obviously I don't have SDL output:

./ffmpeg -formats | grep SDL
ffmpeg version N-73832-g736a386 Copyright (c) 2000-2015 the FFmpeg
developers
  built with gcc 5.1.1 (GCC) 20150618 (Red Hat 5.1.1-4)
  configuration: --enable-libpulse --enable-gpl --enable-libx264
  libavutil      54. 28.100 / 54. 28.100
  libavcodec     56. 49.101 / 56. 49.101
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 25.100 /  5. 25.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
 DE smjpeg          Loki SDL MJPEG

What is the compile option?