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• Set correct start time of ts-file using ffmpeg

  9 octobre 2020, par Daniel

  I am splitting up a video into multiple 10 second ts-parts (mpeg-ts format) using ffmpeg on windows.

  



  To create the 2nd part (that starts at 10 seconds into the video and ends at 20 seconds into the video) :

  



  ffmpeg -i sample.avi -ss 00:00:10 -to 00:00:20 -vcodec libx264 -acodec aac -vf scale=426:-1 out1.ts


  



  But when i check the file using ffprobe it says :

  



  Duration: 00:00:10.02, start: 1.458667, bitrate: 359 kb/s


  



  So the duration is ok but the start time is incorrect. Is it anyway i can use ffmpeg to correct it to 00:00:20 ?
The best solution would of course to be able to set the correct start time in my first command where i take out the 10 second part but i would also be ok with running a 2nd command to fix the time.

  



  Is this possible ? Cant find any documentation and all examples i found are not for my exact problem and don't seem to work then i play around with them.

  



  Full output from ffprobe :

  



  ffprobe.exe out1.ts
ffprobe version git-2020-02-06-343ccfc Copyright (c) 2007-2020 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 39.100 / 56. 39.100
  libavcodec     58. 68.100 / 58. 68.100
  libavformat    58. 38.100 / 58. 38.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 74.100 /  7. 74.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, mpegts, from 'out1.ts':
  Duration: 00:00:10.02, start: 1.458667, bitrate: 359 kb/s
  Program 1
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
    Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 426x260 [SAR 780:781 DAR 18:11], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 131 kb/s


  


• FFMPEG frame counter hangs and stop streaming

  18 janvier 2021, par user2821178

  Good morning,

  


  I use a Raspberry, linked to an IP cam, in order to send the streaming to my Facebook Page.

  


  All works good, but it happen, that for some reason facebook stops to receive the streaming, but FFMPEG continues to works.

  


  I've noticed that even if FFMPEG seems to work correctly, the frame counter stops.

  


  This is the command :

  


      RTSP_URL="rtsp://xxxxxxxxxxx/videoMain";
YOUTUBE_URL="rtmps://live-api-s.facebook.com:443/rtmp/";
YOUTUBE_KEY="zzzzzzzzzxxxxxxxxyyyyyyyyyy";
LOGO="-i yyyyyyyyyyy.png -filter_complex overlay=x=1:y=(main_h-overlay_h)";
VIDEO="-s 512:288 -c:v libx264 -x264-params nal-hrd=cbr -b:v 150k -minrate 50k -maxrate 150k -bufsize 300k";
AUDIO="-c:a aac -strict experimental";
KEYFRAME="-g 100";
OUTPUTFORMAT="-f flv";

COMMAND="sudo ffmpeg -f lavfi -i anullsrc -rtsp_transport tcp -stimeout 5000000 -i ${RTSP_URL} ${LOGO} ${VIDEO} ${AUDIO} ${KEYFRAME} ${OUTPUTFORMAT} ${YOUTUBE_URL}/${YOUTUBE_KEY}";

$COMMAND > streamOut.txt 2>&1;


  


  Here an extract of the output :

  


  ffmpeg version N-96658-g3b860bfd6f Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 6.3.0 (Raspbian 6.3.0-18+rpi1) 20170516
  configuration: --enable-gpl --enable-libx264 --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-librtmp --enable-libtheora --enable-libvorbis --enable-nonfree --enable-version3 --enable-nonfree
  libavutil      56. 39.100 / 56. 39.100
  libavcodec     58. 68.100 / 58. 68.100
  libavformat    58. 38.100 / 58. 38.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 75.100 /  7. 75.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, lavfi, from 'anullsrc':
  Duration: N/A, start: 0.000000, bitrate: 705 kb/s
    Stream #0:0: Audio: pcm_u8, 44100 Hz, stereo, u8, 705 kb/s
[h264 @ 0x3415340] Missing reference picture, default is 65542
[h264 @ 0x3415340] Missing reference picture, default is 65544
[h264 @ 0x3415340] Missing reference picture, default is 65546
[h264 @ 0x3415340] Missing reference picture, default is 65548
[h264 @ 0x3415340] Missing reference picture, default is 65550
[h264 @ 0x3415340] Missing reference picture, default is 65552
[h264 @ 0x3415340] Missing reference picture, default is 65554
[h264 @ 0x3415340] Missing reference picture, default is 65556
[h264 @ 0x3415340] Missing reference picture, default is 65558
[h264 @ 0x3415340] Missing reference picture, default is 65560
[h264 @ 0x3415340] Missing reference picture, default is 65562
[h264 @ 0x3415340] Missing reference picture, default is 65564
[h264 @ 0x3415340] Missing reference picture, default is 65566
[h264 @ 0x3415340] Missing reference picture, default is 65568
[h264 @ 0x3415340] Missing reference picture, default is 65570
[h264 @ 0x3415340] Missing reference picture, default is 65572
[h264 @ 0x3415340] Missing reference picture, default is 65574
[h264 @ 0x3415340] Missing reference picture, default is 65576
[h264 @ 0x3415340] Missing reference picture, default is 65578
[h264 @ 0x3415340] Missing reference picture, default is 65580
[h264 @ 0x3415340] Missing reference picture, default is 65582
[h264 @ 0x3415340] Missing reference picture, default is 65584
[h264 @ 0x3415340] Missing reference picture, default is 65586
[h264 @ 0x3415340] Missing reference picture, default is 65588
[h264 @ 0x3415340] Missing reference picture, default is 65590
[h264 @ 0x3415340] Missing reference picture, default is 65592
Guessed Channel Layout for Input Stream #1.1 : mono
Input #1, rtsp, from 'rtsp://xxxxxxxxxxxxxxxx/videoMain':
  Metadata:
    title           : IP Camera Video
    comment         : videoMain
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #1:0: Video: h264 (High), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 29.75 tbr, 90k tbn, 2108081.20 tbc
    Stream #1:1: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
Input #2, png_pipe, from 'zzzzzzzzzzz.png':
  Duration: N/A, bitrate: N/A
    Stream #2:0: Video: png, rgba(pc), 500x233 [SAR 3778:3778 DAR 500:233], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #1:0 (h264) -> overlay:main (graph 0)
  Stream #2:0 (png) -> overlay:overlay (graph 0)
  overlay (graph 0) -> Stream #0:0 (libx264)
  Stream #0:0 -> #0:1 (pcm_u8 (native) -> aac (native))
Press [q] to stop, [?] for help
[rtsp @ 0x34127d0] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
[h264 @ 0x34e0890] Missing reference picture, default is 65542
[h264 @ 0x3467ba0] Missing reference picture, default is 65544
[h264 @ 0x342e220] Missing reference picture, default is 65546
[h264 @ 0x35727c0] Missing reference picture, default is 65548
[h264 @ 0x34ffed0] Missing reference picture, default is 65550
[h264 @ 0x34e0890] Missing reference picture, default is 65552
[h264 @ 0x3467ba0] Missing reference picture, default is 65554
[h264 @ 0x342e220] Missing reference picture, default is 65556
[h264 @ 0x35727c0] Missing reference picture, default is 65558
[h264 @ 0x34ffed0] Missing reference picture, default is 65560
[h264 @ 0x34e0890] Missing reference picture, default is 65562
[h264 @ 0x3467ba0] Missing reference picture, default is 65564
[h264 @ 0x342e220] Missing reference picture, default is 65566
[h264 @ 0x35727c0] Missing reference picture, default is 65568
[h264 @ 0x34ffed0] Missing reference picture, default is 65570
[h264 @ 0x34e0890] Missing reference picture, default is 65572
[h264 @ 0x3467ba0] Missing reference picture, default is 65574
[h264 @ 0x342e220] Missing reference picture, default is 65576
[h264 @ 0x35727c0] Missing reference picture, default is 65578
[h264 @ 0x34ffed0] Missing reference picture, default is 65580
[h264 @ 0x34e0890] Missing reference picture, default is 65582
[h264 @ 0x3467ba0] Missing reference picture, default is 65584
[h264 @ 0x342e220] Missing reference picture, default is 65586
[h264 @ 0x35727c0] Missing reference picture, default is 65588
[h264 @ 0x34ffed0] Missing reference picture, default is 65590
[h264 @ 0x34e0890] Missing reference picture, default is 65592
frame=    0 fps=0.0 q=0.0 size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A    
[libx264 @ 0x344a2b0] using SAR=1/1
[libx264 @ 0x344a2b0] using cpu capabilities: ARMv6 NEON
[libx264 @ 0x344a2b0] profile High, level 2.1, 4:2:0, 8-bit
[libx264 @ 0x344a2b0] 264 - core 159 r2991 1771b55 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=100 keyint_min=10 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=cbr mbtree=1 bitrate=150 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=150 vbv_bufsize=300 nal_hrd=cbr filler=1 ip_ratio=1.40 aq=1:1.00
Output #0, flv, to 'rtmps://live-api-s.facebook.com:443/rtmp//xzxzxxzxzxzxxzxzxzxzxxzxzxzxzxzx':
  Metadata:
    encoder         : Lavf58.38.100
    Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 512x288 [SAR 1:1 DAR 16:9], q=-1--1, 150 kb/s, 29.75 fps, 1k tbn, 29.75 tbc (default)
    Metadata:
      encoder         : Lavc58.68.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 150000/0/150000 buffer size: 300000 vbv_delay: N/A
    Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 44100 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc58.68.100 aac
frame=   10 fps=9.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
frame=   22 fps= 14 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
frame=   34 fps= 16 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
frame=   45 fps= 17 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
frame=   52 fps= 16 q=29.0 size=      26kB time=00:00:01.85 bitrate= 116.1kbits/s speed=0.584x    
frame=   63 fps= 17 q=22.0 size=      29kB time=00:00:02.52 bitrate=  93.7kbits/s speed=0.68x    
......
...... 
frame=11279 fps= 14 q=20.0 size=   15356kB time=00:13:06.05 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11287 fps= 14 q=20.0 size=   15362kB time=00:13:06.58 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.967x    
frame=11295 fps= 14 q=23.0 size=   15373kB time=00:13:07.09 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.967x    
frame=11302 fps= 14 q=24.0 size=   15380kB time=00:13:07.55 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11309 fps= 14 q=23.0 size=   15386kB time=00:13:08.00 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11317 fps= 14 q=22.0 size=   15402kB time=00:13:08.50 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11325 fps= 14 q=23.0 size=   15408kB time=00:13:09.00 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11332 fps= 14 q=23.0 size=   15416kB time=00:13:09.48 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11340 fps= 14 q=21.0 size=   15454kB time=00:13:09.98 bitrate= 160.3kbits/s dup=0 drop=433 speed=0.966x    
frame=11348 fps= 14 q=21.0 size=   15459kB time=00:13:10.52 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.966x    
frame=11356 fps= 14 q=22.0 size=   15466kB time=00:13:11.02 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.966x    
frame=11364 fps= 14 q=21.0 size=   15472kB time=00:13:11.56 bitrate= 160.1kbits/s dup=0 drop=433 speed=0.966x    
frame=11372 fps= 14 q=21.0 size=   15477kB time=00:13:12.03 bitrate= 160.1kbits/s dup=0 drop=433 speed=0.966x    
frame=11380 fps= 14 q=21.0 size=   15488kB time=00:13:12.59 bitrate= 160.1kbits/s dup=0 drop=433 speed=0.966x    
frame=11388 fps= 14 q=21.0 size=   15493kB time=00:13:13.07 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
[rtsp @ 0x34127d0] CSeq 29 expected, 0 received.
    Last message repeated 1 times
frame=11396 fps= 14 q=22.0 size=   15500kB time=00:13:13.61 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
[rtsp @ 0x34127d0] CSeq 29 expected, 0 received.
    Last message repeated 3 times
frame=11404 fps= 14 q=20.0 size=   15507kB time=00:13:14.11 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
[rtsp @ 0x34127d0] CSeq 29 expected, 0 received.
    Last message repeated 4 times
frame=11412 fps= 14 q=23.0 size=   15520kB time=00:13:14.65 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
[rtsp @ 0x34127d0] CSeq 29 expected, 0 received.
frame=11419 fps= 14 q=20.0 size=   15527kB time=00:13:15.12 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
[rtsp @ 0x34127d0] CSeq 29 expected, 0 received.
    Last message repeated 1 times
frame=11424 fps= 14 q=20.0 size=   15534kB time=00:13:15.46 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11431 fps= 14 q=22.0 size=   15540kB time=00:13:15.86 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11439 fps= 14 q=21.0 size=   15579kB time=00:13:16.37 bitrate= 160.3kbits/s dup=0 drop=433 speed=0.966x    
frame=11446 fps= 14 q=21.0 size=   15583kB time=00:13:16.80 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.966x    
......
...... 
frame=11811 fps= 14 q=21.0 size=   16022kB time=00:13:40.33 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11819 fps= 14 q=21.0 size=   16031kB time=00:13:40.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11827 fps= 14 q=21.0 size=   16041kB time=00:13:41.37 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.966x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.965x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.965x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.964x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.964x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.963x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.962x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.962x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.961x    
frame=11834 fps= 14 q=25.0 size=   16052kB time=00:13:41.84 bitrate= 160.0kbits/s dup=0 drop=433 speed=0.961x    
frame=11835 fps= 14 q=21.0 size=   16076kB time=00:13:41.91 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.96x    
frame=11835 fps= 14 q=21.0 size=   16076kB time=00:13:41.91 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.96x    
frame=11835 fps= 14 q=21.0 size=   16076kB time=00:13:41.91 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.959x    
frame=11835 fps= 14 q=21.0 size=   16076kB time=00:13:41.91 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.959x    
frame=11835 fps= 14 q=21.0 size=   16076kB time=00:13:41.91 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.958x    
frame=11835 fps= 14 q=21.0 size=   16076kB time=00:13:41.91 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.957x    
frame=11835 fps= 14 q=21.0 size=   16076kB time=00:13:41.91 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.957x    
frame=11835 fps= 14 q=21.0 size=   16076kB time=00:13:41.91 bitrate= 160.2kbits/s dup=0 drop=433 speed=0.956x    
......
...... 
frame=11839 fps=9.0 q=22.0 size=   23189kB time=02:16:02.34 bitrate=  23.3kbits/s dup=0 drop=433 speed=6.22x    
frame=11839 fps=9.0 q=22.0 size=   23197kB time=02:16:10.66 bitrate=  23.3kbits/s dup=0 drop=433 speed=6.22x    
frame=11839 fps=9.0 q=22.0 size=   23205kB time=02:16:18.92 bitrate=  23.2kbits/s dup=0 drop=433 speed=6.23x    
frame=11839 fps=9.0 q=22.0 size=   23213kB time=02:16:27.19 bitrate=  23.2kbits/s dup=0 drop=433 speed=6.23x    
frame=11839 fps=9.0 q=22.0 size=   23221kB time=02:16:35.34 bitrate=  23.2kbits/s dup=0 drop=433 speed=6.23x    
frame=11839 fps=9.0 q=22.0 size=   23229kB time=02:16:43.67 bitrate=  23.2kbits/s dup=0 drop=433 speed=6.24x    
frame=11839 fps=9.0 q=22.0 size=   23237kB time=02:16:51.89 bitrate=  23.2kbits/s dup=0 drop=433 speed=6.24x    
frame=11839 fps=9.0 q=22.0 size=   23245kB time=02:17:00.12 bitrate=  23.2kbits/s dup=0 drop=433 speed=6.25x    
frame=11839 fps=9.0 q=22.0 size=   23253kB time=02:17:08.43 bitrate=  23.2kbits/s dup=0 drop=433 speed=6.25x    



  


  There is a way to stops FFMPEG when this happen ?

  


  Thanks !

  


• Can't list input devices ffmpeg linux

  23 juillet 2021, par spindi598

  On windows I could do something like this to list input devices :

  


  ffmpeg -list_devices true -f dshow -i dummy


  


  On Linux I try doing something like this :

  


  ffmpeg -list_devices true -f <x11grab></x11grab>avfoundation>&#xA;

  


  And I get an error (I have also tried the latest git build from here) :

  


  ffmpeg version n4.2.4 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10.1.0 (GCC)
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Unrecognized option 'list_devices'.
Error splitting the argument list: Option not found


  


  How can I list my input devices ?