ffmpeg: Streamcopy requested for output stream 0:0, which is fed from a complex filtergraph. Filtering and streamcopy cannot be used together

Question

I'm on Fedora25 running the following command expecting live streaming to youtube and at the same time saving of the final combined stream (screencast + webcam + logo + audio) into local mp4 file.

ffmpeg \
-f x11grab -video_size 3840x2160 -framerate 30 -i :1.0 \
-f v4l2 -video_size 320x240 -framerate 30 -i /dev/video1 \
-f alsa -ac 2 -i pulse -i logo.png -filter_complex \
"[0:v]scale=1920:-1,setpts=PTS-STARTPTS[bg]; \
 [1:v]scale=160:-1,setpts=PTS-STARTPTS[fg]; \
 [bg][fg]overlay=W-w-10:10[bg2]; \
 [bg2][3:v]overlay=W-w-10:H-h-10,format=yuv420p[out]" \
-map "[out]" -map 2:a -c:v libx264 -preset veryfast \
-maxrate 9000k -bufsize 12000k -c:a aac -b:a 160k -ar 44100 -b:a 128k \
-force_key_frames "expr:gte(t,n_forced*2)" \
-c copy -f flv rtmp://a.rtmp.youtube.com/live2/TOKEN
-c copy -f mp4 out.mp4

getting the following output

ffmpeg version 3.1.7 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.3.1 (GCC) 20161221 (Red Hat 6.3.1-1)
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --extra-cflags=-I/usr/include/nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
  libavutil      55. 28.100 / 55. 28.100
  libavcodec     57. 48.101 / 57. 48.101
  libavformat    57. 41.100 / 57. 41.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 47.100 /  6. 47.100
  libavresample   3.  0.  0 /  3.  0.  0
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
[x11grab @ 0x562f6e929c20] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, x11grab, from ':1.0':
  Duration: N/A, start: 1496800335.695598, bitrate: N/A
    Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 3840x2160, 30 fps, 1000k tbr, 1000k tbn, 1000k tbc
Input #1, video4linux2,v4l2, from '/dev/video1':
  Duration: N/A, start: 17665.258327, bitrate: 36864 kb/s
    Stream #1:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 320x240, 36864 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
Guessed Channel Layout for Input Stream #2.0 : stereo
Input #2, alsa, from 'pulse':
  Duration: N/A, start: 1496800336.972575, bitrate: 1536 kb/s
    Stream #2:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Input #3, png_pipe, from 'logo.png':
  Duration: N/A, bitrate: N/A
    Stream #3:0: Video: png, rgba(pc), 190x105 [SAR 2835:2835 DAR 38:21], 25 tbr, 25 tbn, 25 tbc
Streamcopy requested for output stream 0:0, which is fed from a complex filtergraph. Filtering and streamcopy cannot be used together.
➜  tmp 

Answer 1

Since you are filtering or encoding the input streams, you can't do a stream copy on the input. Remove -c copy altogether.