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• how to remove duplicated frame from 00:00:00,00 to 00:00:00,25 section not overall with mpdecimate filter ?

  19 octobre 2018, par cool jobs

  how to remove duplicated frame from 00:00:00,00 to 00:00:00,25 (00frame 25frames)section not overall with mpdecimate filter ??
  normally H264 video have some duplicated frames on video start section ..

      i have tried like this , 
  
  
  
  1)  ./ffmpeg -i cated_2-3.UMMJI.MTS -map 0:0 -c:v prores_ks -profile:v 1 -qscale:v 8  -s 1920x1080  -r 29.97  -top 1  -c:a pcm_s16le    -map 0:1 -filter:a:0 "pan=mono|c0=c0" -map 0:1 -filter:a:1 "pan=mono|c0=c1"   -metadata:s encoder="Apple ProRes 422 LT"  -filter_complex "[0]split=2[a][b];[a]trim=end_frame=26,mpdecimate[a];[b]trim=start_frame=25,setpts=PTS-STARTPTS[b];[a][b]concat=n=2:v=1:a=0" -vsync vfr -vf blackdetect=d=0.1:pix_th=.1  cated_2-3.UMMJI_MTS_mpdecimate26_section.mov
  
  
  
  and  tried to check black_frame on out prores mov file 
  
  2)./ffmpeg  -i cated_2-3.UMMJI_MTS_mpdecimate26_section.mov  -vf blackdetect=d=0.1:pix_th=.1  test.mov
  
  
  
  then , will be shown like below 
  
  
  
  macmini-master:1.  two_file_test khan$ ./ffmpeg  -i cated_2-3.UMMJI_MTS_mpdecimate26_section.mov  -vf blackdetect=d=0.1:pix_th=.1  test.mov
  
  ffmpeg version N-92108-ge08a876e67-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
  
    built with Apple LLVM version 10.0.0 (clang-1000.11.45.2)
  
    configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  
    libavutil      56. 19.101 / 56. 19.101
  
    libavcodec     58. 32.100 / 58. 32.100
  
    libavformat    58. 18.104 / 58. 18.104
  
    libavdevice    58.  4.105 / 58.  4.105
  
    libavfilter     7. 33.100 /  7. 33.100
  
    libswscale      5.  2.100 /  5.  2.100
  
    libswresample   3.  2.100 /  3.  2.100
  
    libpostproc    55.  2.100 / 55.  2.100
  
  Guessed Channel Layout for Input Stream #0.1 : mono
  
  Guessed Channel Layout for Input Stream #0.2 : mono
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cated_2-3.UMMJI_MTS_mpdecimate26_section.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 512
  
      compatible_brands: qt
  
      encoder         : Lavf58.18.104
  
    Duration: 00:25:12.58, start: 0.000000, bitrate: 86198 kb/s
  
      Stream #0:0(eng): Video: prores (apcs / 0x73637061), yuv422p10le(tv, top first), 1920x1080, 84662 kb/s, SAR 1:1 DAR 16:9, 29.97 fps, 29.97 tbr, 11988 tbn, 11988 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
        encoder         : Apple ProRes 422 LT
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16, 768 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
      Stream #0:2(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16, 768 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (prores (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x7f8eb2804200] using SAR=1/1
  
  [libx264 @ 0x7f8eb2804200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x7f8eb2804200] profile High 4:2:2, level 4.0, 4:2:2, 8-bit
  
  [libx264 @ 0x7f8eb2804200] 264 - core 157 r2935 545de2f - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - 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=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mov, to 'test.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 512
  
      compatible_brands: qt
  
      encoder         : Lavf58.18.104
  
      Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 29.97 fps, 11988 tbn, 29.97 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
        encoder         : Lavc58.32.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 69 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
        encoder         : Lavc58.32.100 aac
  
  frame= 8224 fps= 21 q=29.0 size=   86528kB time=00:04:34.49 bitrate=2582.3kbits/s dup=19 drop=0 speed=0.689x

  as you can see duplicated frame just changed to black frame , not removed
  this MTS file have 19 duplicated frames !
  also i have checked in FCPX and count how many dupicated frame on out prores mov file ...

• How to stream MJPEG stream to RTMP server ?

  24 octobre 2018, par geooot

  I have a MJPEG stream and I’m trying to use ffmpeg to take it as an input and stream it to an rtmp server at a defined framerate.

  I have already tried this as a command :

  ffmpeg -f mjpeg -r 60 -i http://localhost:3030/ -f flv -vcodec flv rtmp://localhost/live/test

  While ffmpeg looks like it is sending something...

  ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
    built with Apple LLVM version 9.1.0 (clang-902.0.39.2)
    configuration : —prefix=/usr/local/Cellar/ffmpeg/4.0.2 —enable-shared —enable-pthreads —enable-version3 —enable-hardcoded-tables —enable-avresample —cc=clang —host-cflags= —host-ldflags= —enable-gpl —enable-libmp3lame —enable-libx264 —enable-libxvid —enable-opencl —enable-videotoolbox —disable-lzma
    libavutil      56. 14.100 / 56. 14.100
    libavcodec     58. 18.100 / 58. 18.100
    libavformat    58. 12.100 / 58. 12.100
    libavdevice    58.  3.100 / 58.  3.100
    libavfilter     7. 16.100 /  7. 16.100
    libavresample   4.  0.  0 /  4.  0.  0
    libswscale      5.  1.100 /  5.  1.100
    libswresample   3.  1.100 /  3.  1.100
    libpostproc    55.  1.100 / 55.  1.100
  Input #0, mjpeg, from ’http://localhost:3030/’ :
    Duration : N/A, bitrate : N/A
      Stream #0:0 : Video : mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1920x1080 [SAR 1:1 DAR 16:9], 60 tbr, 1200k tbn, 60 tbc
  [tcp @ 0x7f95f9401ec0] Connection to tcp ://localhost:1935 failed (Connection refused), trying next address
  Stream mapping :
    Stream #0:0 -> #0:0 (mjpeg (native) -> flv1 (flv))
  Press [q] to stop, [?] for help
  [swscaler @ 0x7f95fa033e00] deprecated pixel format used, make sure you did set range correctly
  Output #0, flv, to ’rtmp ://localhost/live/test’ :
    Metadata :
      encoder : Lavf58.12.100
      Stream #0:0 : Video : flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 60 fps, 1k tbn, 60 tbc
      Metadata :
        encoder : Lavc58.18.100 flv
      Side data :
        cpb : bitrate max/min/avg : 0/0/200000 buffer size : 0 vbv_delay : -1
  frame=   20 fps=3.2 q=31.0 size=     194kB time=00:00:00.31 bitrate=4999.6kbits/s speed=0.0512x
  

  I cannot preview the stream through VLC. Weirdly enough, if I let VLC try to load the url (rtmp ://localhost/live/test) and then close ffmpeg, VLC will actually show the video stream for a few frames and then stop again.

  Help on how to achieve this would be much appreciated.

• Why this shell command doesn't work ? ('command' works but 'command|cat' doesn't work)

  16 octobre 2018, par yabee

  Problem

  The following code outputs like...

  $ ffprobe -show_frames -select_streams v test.mp4 2>/dev/null|grep -A 2 key_frame=1
  
  key_frame=1
  
  pkt_pts=0
  
  pkt_pts_time=0:00:00.000000
  
  --
  
  key_frame=1
  
  pkt_pts=41041
  
  pkt_pts_time=0:00:01.710042
  
  --
  
  key_frame=1
  
  pkt_pts=64064
  
  pkt_pts_time=0:00:02.669333
  
  --
  
  key_frame=1
  
  pkt_pts=87087
  
  pkt_pts_time=0:00:03.628625
  
  --
  
  ...

  But the folowing one outputs nothing.

  $ ffprobe -show_frames -select_streams v test.mp4 2>/dev/null|grep -A 2 key_frame=1|cat

  And...

  $ ffprobe -show_frames -select_streams v test.mp4 2>/dev/null|grep key_frame=1
  
  key_frame=1
  
  key_frame=1
  
  key_frame=1
  
  key_frame=1
  
  $ ffprobe -show_frames -select_streams v test.mp4 2>/dev/null|grep key_frame=1|cat
  
  # Nothing outputted.

  Why ?

  Expected result

  What actually I want to do is

  $ ffprobe -show_frames -select_streams v test.mp4 2>/dev/null|grep -A 2key_frame=1|grep time
  
  pkt_pts_time=0:00:00.000000
  
  pkt_pts_time=0:00:01.710042
  
  pkt_pts_time=0:00:02.669333
  
  pkt_pts_time=0:00:03.628625
  
  ...

  But its result is

  $ ffprobe -show_frames -select_streams v test.mp4 2>/dev/null|grep -A 2key_frame=1|grep time
  
  # Nothing outputted.

  Grep works correctory exept it’s after ffprobe.

  $ seq 30|grep 1|grep 2
  
  12
  
  21

  Environment

  • Bash on Ubuntu on Windows 10 Pro
    • Windows version : 1803
    • Windows OS build : 17134.345

  Environment of Ubuntu :

  $ cat /etc/lsb-release
  
  DISTRIB_ID=Ubuntu
  
  DISTRIB_RELEASE=18.04
  
  DISTRIB_CODENAME=bionic
  
  DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
  
  
  
  $ bash --version
  
  GNU bash, version 4.4.19(1)-release (x86_64-pc-linux-gnu)
  
  Copyright (C) 2016 Free Software Foundation, Inc.
  
  License GPLv3+: GNU GPL version 3 or later /gnu.org/licenses/gpl.html>
  
  
  
  This is free software; you are free to change and redistribute it.
  
  There is NO WARRANTY, to the extent permitted by law.
  
  
  
  $ ffprobe
  
  ffprobe version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2007-2018 the FFmpeg developers
  
    built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  
    configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  Simple multimedia streams analyzer
  
  usage: ffprobe [OPTIONS] [INPUT_FILE]
  
  
  
  You have to specify one input file.
  
  Use -h to get full help or, even better, run 'man ffprobe'.

  What is problem ?

  Does grep or ffprobe change its behavior by existence of pipe in this case ?
  Thanks.