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• webm to mp4 conversion using ffmpeg

  2 décembre 2015, par Pavan K

  When I try to convert a webm file to mp4 the output is very very choppy and it appears as if many frames have been dropped by ffmpeg

  I used the following commands to convert

  ffmpeg -i movie.webm movie.mp4
  
  ffmpeg -i movie.webm -vcodec libx264 movie.mp4
  
  ffmpeg -i movie.webm -vcodec libx264 -qscale 0 movie.mp4

  All of them have the same problem. When I use ffprobe it seems to show the frames more or less properly.

  UPDATE :

   built on Jun 14 2013 14:31:50 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1)
  
    configuration: --prefix=/home/user2/ffmpeg_build --extra-cflags=-I/home/user2/ffmpeg_build/include --extra-ldflags=-L/home/pavan4/ffmpeg_build/lib --bindir=/home/pavan4/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab
  
    libavutil      52. 35.101 / 52. 35.101
  
    libavcodec     55. 16.100 / 55. 16.100
  
    libavformat    55.  8.102 / 55.  8.102
  
    libavdevice    55.  2.100 / 55.  2.100
  
    libavfilter     3. 77.101 /  3. 77.101
  
    libswscale      2.  3.100 /  2.  3.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
  
  
  
  Use -h to get full help or, even better, run 'man ffmpeg'
  
  
  
  Input #0, matroska,webm, from '1.webm':
  
    Duration: 00:00:10.64, start: 0.000000, bitrate: 5024 kb/s
  
      Stream #0:0(eng): Video: vp8, yuv420p, 1280x720, SAR 1:1 DAR 16:9, 1k fps, 1k tbr, 1k tbn, 1k tbc (default)
  
  [libx264 @ 0x1d966a0] using SAR=1/1
  
  [libx264 @ 0x1d966a0] MB rate (3600000) > level limit (2073600)
  
  [libx264 @ 0x1d966a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 0x1d966a0] profile High, level 5.2
  
  [libx264 @ 0x1d966a0] 264 - core 133 r2 a3ac64b - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - 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=12 lookahead_threads=2 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 '1_conv4.mp4':
  
    Metadata:
  
      encoder         : Lavf55.8.102
  
      Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 16k tbn, 1k tbc (default)
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (vp8 -> libx264)
  
  Press [q] to stop, [?] for help
  
  frame=  168 fps=0.0 q=33.0 size=      62kB time=00:00:00.11 bitrate=4606.0kbits/frame=  293 fps=230 q=33.0 size=     138kB time=00:00:00.23 bitrate=4809.7kbits/
  
  
  
  video:5620kB audio:0kB subtitle:0 global headers:0kB muxing overhead 2.212461%
  
  [libx264 @ 0x1d966a0] frame I:46    Avg QP:18.50  size: 39849
  
  [libx264 @ 0x1d966a0] frame P:2940  Avg QP:18.27  size:  1222
  
  [libx264 @ 0x1d966a0] frame B:7651  Avg QP:17.68  size:    43
  
  [libx264 @ 0x1d966a0] consecutive B-frames:  4.0%  0.2%  0.3% 95.5%
  
  [libx264 @ 0x1d966a0] mb I  I16..4: 19.9% 63.2% 16.9%
  
  [libx264 @ 0x1d966a0] mb P  I16..4:  0.2%  0.5%  0.1%  P16..4:  3.9%  1.1%  0.6%  0.0%  0.0%    skip:93.6%
  
  [libx264 @ 0x1d966a0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:25.1% L1:74.9% BI: 0.0%
  
  [libx264 @ 0x1d966a0] 8x8 transform intra:63.6% inter:75.9%
  
  [libx264 @ 0x1d966a0] coded y,uvDC,uvAC intra: 61.5% 53.4% 24.4% inter: 0.5% 0.5% 0.0%
  
  [libx264 @ 0x1d966a0] i16 v,h,dc,p: 52% 19% 19% 11%
  
  [libx264 @ 0x1d966a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 17% 13%  4%  6%  9%  5%  8%  6%
  
  [libx264 @ 0x1d966a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 18% 14%  5%  8% 10%  6%  6%  3%
  
  [libx264 @ 0x1d966a0] i8c dc,h,v,p: 55% 17% 24%  4%
  
  [libx264 @ 0x1d966a0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x1d966a0] ref P L0: 82.5% 13.2%  4.0%  0.3%
  
  [libx264 @ 0x1d966a0] ref B L0: 60.2% 39.2%  0.6%
  
  [libx264 @ 0x1d966a0] ref B L1: 98.5%  1.5%
  
  [libx264 @ 0x1d966a0] kb/s:4327.77

• FFMPEG image + music = video

  24 septembre 2017, par Nikita Slastikhin

  Just trying todo video for youtube from image (1080p .png) + music (320Kb mp3).

      ffmpeg -loop 1 -i image.png -i music.mp3 -c:a copy -c:v libx264 -crf 0 -preset veryslow -shortest output.mp4
  

  But converting is to slowly.
  Any ideas, how it make optimize ?

  E:_TEST>ffmpeg -loop 1 -i image0.png -i music0.mp3 -c:a aac -c:v libx264 -crf 0 -preset veryfast -shortest video0.mp4
   ffmpeg version N-87306-g6743351 Copyright (c) 2000-2017 the FFmpeg developers
   built with gcc 7.2.0 (GCC)
   configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib
   libavutil            55. 75.100 / 55. 75.100
   libavcodec         57.106.101 / 57.106.101
   libavformat        57. 82.100 / 57. 82.100
   libavdevice        57.    8.101 / 57.    8.101
   libavfilter         6.105.100 /    6.105.100
   libswscale            4.    7.103 /    4.    7.103
   libswresample     2.    8.100 /    2.    8.100
   libpostproc        54.    6.100 / 54.    6.100
   Input #0, png_pipe, from 'image0.png':
   Duration: N/A, bitrate: N/A
       Stream #0:0: Video: png, rgb24(pc), 1920x1080, 25 fps, 25 tbr, 25 tbn, 25 tbc
   Input #1, mp3, from 'music0.mp3':
   Metadata:
       encoder                 : Lavf57.56.101
   Duration: 01:00:33.06, start: 0.025057, bitrate: 128 kb/s
       Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
       Metadata:
           encoder                 : Lavc57.64
   Stream mapping:
   Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
   Stream #1:0 -> #0:1 (mp3 (native) -> aac (native))
   Press [q] to stop, [?] for help
   [libx264 @ 0000000002d3f320] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA3 BMI1
   [libx264 @ 0000000002d3f320] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
   [libx264 @ 0000000002d3f320] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - <a href="http://www.videolan.org/x264.html" rel="nofollow noreferrer">http://www.videolan.org/x264.html</a> - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=2 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=12 lookahead_threads=4 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=0
   Output #0, mp4, to 'video0.mp4':
   Metadata:
       encoder                 : Lavf57.82.100
       Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p(progressive), 1920x1080, q=-1--1, 25 fps, 12800 tbn, 25 tbc
       Metadata:
           encoder                 : Lavc57.106.101 libx264
       Side data:
           cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
       Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
       Metadata:
           encoder                 : Lavc57.106.101 aac
   frame=    107 fps= 40 q=-1.0 Lsize=         778kB time=00:00:04.24 bitrate=1503.5kbits/s speed=1.57x

• capturing x11grab display from ffmpeg giveing "segmentation fault1 q=0.0"

  26 juin 2019, par user2369563

  In Debian 9, I am trying to record screen using ffmpeg over x11grab. it's working great but sometimes its give error as shown below.
Any idea what causing this ?

  



  exec error: Error: Command failed: ffmpeg -y  -f x11grab -s 1920x1080 -framerate 30 -i :1.0+0,0 -vsync 1 -c:v libx264 -preset ultrafast -crf 0 -pix_fmt yuv444p output.mkv
ffmpeg version 3.2.14-1~deb9u1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --prefix=/usr --extra-version='1~deb9u1' --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-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --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-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  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
  libavresample   3.  1.  0 /  3.  1.  0
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
  libpostproc    54.  1.100 / 54.  1.100
[x11grab @ 0x55f87adcffa0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, x11grab, from ':1.0+0,0':
  Duration: N/A, start: 1561540173.584858, bitrate: N/A
    Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 30 fps, 1000k tbr, 1000k tbn, 1000k tbc
[libx264 @ 0x55f87adda860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x55f87adda860] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 0x55f87adda860] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=cqp mbtree=0 qp=0
Output #0, matroska, to 'output.mkv':
  Metadata:
    encoder         : Lavf57.56.101
    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1920x1080, q=-1--1, 30 fps, 1k tbn, 30 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 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Segmentation fault1 q=0.0 size=   10942kB time=00:00:02.40 bitrate=37332.4kbits/s speed=0.923x