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• avfilter/interlace : add complex vertical low-pass filter

  20 avril 2017, par Thomas Mundt

  avfilter/interlace : add complex vertical low-pass filter
  This complex (-1 2 6 2 -1) filter slightly less reduces interlace 'twitter' but better retain detail and subjective sharpness impression compared to the linear (1 2 1) filter.
  Signed-off-by : Thomas Mundt <tmundt75@gmail.com>
  
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] doc/filters.texi
  • [DH] libavfilter/interlace.h
  • [DH] libavfilter/tinterlace.h
  • [DH] libavfilter/vf_interlace.c
  • [DH] libavfilter/vf_tinterlace.c
  • [DH] libavfilter/x86/vf_interlace.asm
  • [DH] libavfilter/x86/vf_interlace_init.c
  • [DH] libavfilter/x86/vf_tinterlace_init.c
  • [DH] tests/fate/filter-video.mak
  • [DH] tests/ref/fate/filter-interlace-complex

• FFMPEG being killed when processing H264 video

  4 mai 2017, par Stuart Clarke

  I have a program that when given a video (video.mp4), extracts the audio, a thumbnail image and the video into separate files, adds some background music to the audio file to create a new file (combined.mp3), increases the resolution of the video to 1080p and saves to a new file (videoHD.mp4), adds intro and credits to the start and end (already in 1080p) and saves that to a new file (merged.mp4) and finally combines the processed video and audio into an output file (videoExt.mp4). I’m using ffmpeg through python and subprocess.call to do all this but the raw ffmpeg commands are as follows.

  ffmpeg -y -i video.mp4 -acodec mp3 audioTrack.mp3
  
  
  
  ffmpeg -y -ss 00:00:00 -i video.mp4 -vframes 1 -q:v 2 thumb.jpg
  
  
  
  ffmpeg -y -i video.mp4 -an videoTrack.mp4
  
  
  
  ffmpeg -y -i audioTrack.mp3 -i musicTrack.mp3 -filter_complex amerge -c:a libmp3lame -q:a 4 combined.mp3
  
  
  
  ffmpeg -y -i videoTrack.mp4 -vf 'scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:x=(1920-iw)/2:y=(1080-ih)/2:color=black' videoHD.mp4
  
  
  
  ffmpeg -y -f concat -i vids.ini -an merged.mp4
  
  
  
  ffmpeg -y -i merged.mp4 -i combined.mp3 -strict -2 -shortest videoExt.mp4

  Between extracting the audio and combining with the music I add a silent period matching the intro length to the beginning for the audio and lower the volume of the music for the duration of the video section and crop the music to the length of the combined intro, video and credits. This is all done with AudioSegment and works well.

  My problem is that the ffmpeg process keeps being killed. It happens in various places at various times, but always when processing the video at 1080p. I’m sure it has something to do with the H264 codec but when I use mpeg4 the quality is terrible. The videos are always less than a minute (Instagram videos) and at most 25Mb, I’m using a VPS with Ubuntu Server 15.04 installed, it should be able to handle this surely. If not is there a way around it, processing the video in parts ?

  Here is an example of the error but as I said, it can happen in various places and sometimes will complete for one command but I have never had it complete for all.

  # ffmpeg -y -f concat -i vids.ini -an merged.mp4
  
  
  
  ffmpeg version 2.5.10-0ubuntu0.15.04.1 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
  
    configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --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-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265
  
    libavutil      54. 15.100 / 54. 15.100
  
    libavcodec     56. 13.100 / 56. 13.100
  
    libavformat    56. 15.102 / 56. 15.102
  
    libavdevice    56.  3.100 / 56.  3.100
  
    libavfilter     5.  2.103 /  5.  2.103
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, concat, from 'vids.ini':
  
    Duration: N/A, start: 0.000000, bitrate: 2999 kb/s
  
      Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 2996 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc
  
      Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s
  
  [libx264 @ 0x134fd00] using SAR=1/1
  
  [libx264 @ 0x134fd00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x134fd00] profile High, level 4.0
  
  [libx264 @ 0x134fd00] 264 - core 142 r2495 6a301b6 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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, mp4, to 'merged.mp4':
  
    Metadata:
  
      encoder         : Lavf56.15.102
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 29.97 fps, 11988 tbn, 29.97 tbc
  
      Metadata:
  
        encoder         : Lavc56.13.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=   13 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=1 dro
  
  frame=   28 fps= 27 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=1 dro
  
  frame=   46 fps= 21 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=1 dro
  
  frame=   51 fps= 16 q=29.0 size=     120kB time=00:00:00.-3 bitrate=N/A dup=1 dr
  
  frame=   55 fps= 15 q=29.0 size=     154kB time=00:00:00.10 bitrate=12574.5kbits
  
  frame=   60 fps= 14 q=29.0 size=     195kB time=00:00:00.26 bitrate=5981.0kbits/
  
  frame=   65 fps= 13 q=29.0 size=     254kB time=00:00:00.43 bitrate=4797.0kbits/
  
  frame=   69 fps= 12 q=29.0 size=     287kB time=00:00:00.56 bitrate=4142.1kbits/
  
  frame=   73 fps= 12 q=29.0 size=     375kB time=00:00:00.70 bitrate=4384.2kbits/
  
  frame=   76 fps= 11 q=29.0 size=     418kB time=00:00:00.80 bitrate=4278.4kbits/
  
  frame=   81 fps= 11 q=29.0 size=     441kB time=00:00:00.96 bitrate=3732.4kbits/
  
  frame=   85 fps= 10 q=29.0 size=     472kB time=00:00:01.10 bitrate=3511.0kbits/
  
  Killed1 drop=0 

  Any ideas or if anyone knows a better way to this please let me know.

  Cheers,

  Stu

• ffmpeg fails to capture desktop when UAC prompt appears

  10 mai 2017, par kristin

  I am trying to stream desktop to .avi file using ffmpeg static version 3.2.4 from https://ffmpeg.zeranoe.com/builds/, but streaming fails when UAC prompt appears.

  Command line that I am trying to use :

   ffmpeg.exe -f gdigrab -analyzeduration 100M -probesize 100M -i desktop -framerate 10 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -x264opts crf=23 -r 10 ".avi"

  Output that I got :

    ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.3.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-d3d11va --enable-dxva2
  
  --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontcon
  
  fig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libb
  
  luray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --e
  
  nable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-l
  
  ibopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libope
  
  njpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --en
  
  able-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enabl
  
  e-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable
  
  -libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --e
  
  nable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 34.101 / 55. 34.101
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.101 / 57. 56.101
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  [gdigrab @ 00000000003684a0] Capturing whole desktop as 1654x927x32 at (0,0)
  
  Input #0, gdigrab, from 'desktop':
  
    Duration: N/A, start: 1494400135.425894, bitrate: 1470470 kb/s
  
      Stream #0:0: Video: bmp, bgra, 1654x927, 1470470 kb/s, 29.97 fps, 1000k tbr,
  
   1000k tbn, 1000k tbc
  
  [libx264 @ 000000000036b3e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  AVX
  
  [libx264 @ 000000000036b3e0] profile Constrained Baseline, level 4.0
  
  Output #0, avi, to 'C:\New folder\test.avi':
  
    Metadata:
  
      ISFT            : Lavf57.56.101
  
      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 1654x926, q
  
  =-1--1, 10 fps, 10 tbn, 10 tbc
  
      Metadata:
  
        encoder         : Lavc57.64.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (bmp (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=   12 fps=0.0 q=0.0 size=       6kB time=00:00:00.00 bitrate=N/A dup=0 dro
  
  frame=   18 fps= 17 q=12.0 size=     309kB time=00:00:00.50 bitrate=5067.3kbits/
  
  frame=   23 fps= 15 q=14.0 size=     624kB time=00:00:01.00 bitrate=5113.2kbits/
  
  frame=   29 fps= 12 q=13.0 size=     757kB time=00:00:01.60 bitrate=3877.8kbits/
  
  frame=   35 fps= 12 q=12.0 size=     849kB time=00:00:02.20 bitrate=3161.9kbits/
  
  frame=   40 fps= 12 q=15.0 size=     914kB time=00:00:02.70 bitrate=2771.9kbits/
  
  frame=   44 fps= 11 q=17.0 size=     992kB time=00:00:03.20 bitrate=2538.6kbits/
  
  frame=   49 fps= 11 q=11.0 size=    1069kB time=00:00:03.70 bitrate=2366.7kbits/
  
  frame=   55 fps= 11 q=11.0 size=    1186kB time=00:00:04.40 bitrate=2207.5kbits/
  
  [gdigrab @ 00000000003684a0] Failed to capture image (error 5)
  
  desktop: I/O error
  
  frame=   59 fps= 10 q=10.0 size=    1197kB time=00:00:04.80 bitrate=2043.4kbits/
  
  frame=   59 fps= 10 q=-1.0 Lsize=    1220kB time=00:00:06.10 bitrate=1638.6kbits
  
  /s dup=0 drop=99 speed=1.04x
  
  video:1213kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
  
  overhead: 0.577492%
  
  [libx264 @ 000000000036b3e0] frame I:1     Avg QP:20.00  size:249076
  
  [libx264 @ 000000000036b3e0] frame P:58    Avg QP:13.95  size: 17124
  
  [libx264 @ 000000000036b3e0] mb I  I16..4: 100.0%  0.0%  0.0%
  
  [libx264 @ 000000000036b3e0] mb P  I16..4:  1.8%  0.0%  0.0%  P16..4: 14.1%  0.0
  
  %  0.0%  0.0%  0.0%    skip:84.2%
  
  [libx264 @ 000000000036b3e0] coded y,uvDC,uvAC intra: 31.5% 13.5% 12.4% inter: 7
  
  .7% 2.1% 1.5%
  
  [libx264 @ 000000000036b3e0] i16 v,h,dc,p: 72% 25%  2%  1%
  
  [libx264 @ 000000000036b3e0] i8c dc,h,v,p: 71% 16% 12%  0%
  
  [libx264 @ 000000000036b3e0] kb/s:1629.20

  In output can see message :

  [gdigrab @ 00000000003684a0] Failed to capture image (error 5)
  
  desktop: I/O error

  this is written to output when UAC prompt appears.

  Am I doing something wrong or missing in command line ?
  Have to stream desktop using ffmpeg and don`t fail when UAC prompt appears ?