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• Popen.write - operation on closed file | images to video using FFmpeg

  10 juin 2014, par f.rodrigues

  I’m trying to create a video file from images from my webcam(using SimpleCV), the images are converted to PIL format and then tostring() [rawformat]

  I’m using python subprocess and Popen to create the video using the FFmpeg.

  I can pipe the one image to the FFmpeg and make a video out of it
  But when I try to do a bunch of them I get a error :

  ValueError: I/O operation on closed file

  here’s my code.

  import subprocess as sp
  
  from SimpleCV import *
  
  from Image import Image
  
  
  
  FFMPEG_BIN = "ffmpeg.exe"
  
  
  
  img = Camera().getImage().toRGB()
  
  
  
  
  
  command = [FFMPEG_BIN, '-y',  # (optional) overwrite output file if it exists
  
             '-f', 'rawvideo', '-vcodec', 'rawvideo', '-s', '%sx%s'%(img.width,img.height),  # size of one frame
  
             '-pix_fmt', 'rgb24', '-r', '24',  # frames per second
  
             '-i', '-',  # The imput comes from a pipe
  
             '-an',  # Tells FFMPEG not to expect any audio
  
             '-vcodec', 'libx264rgb',
  
             'my_output_videofile.mp4']
  
  
  
  
  
  pipe = sp.Popen(command, stdin=sp.PIPE)#, stderr=sp.PIPE)
  
  
  
  
  
  for n in xrange(10):
  
      img = Camera().getImage().toRGB().getPIL().tostring()
  
      pipe.stdin.write(img)
  
  
  
  
  
  pipe.terminate()

  It’s wierd because the pipe.terminate() is in the end of the code, and it should close the file right away.

  EDIT :
  Removed the stderr

    ffmpeg version N-63208-gbe1fbc0 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on May 17 2014 01:30:26 with gcc 4.8.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib 
  
    --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray 
  
    --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug 
  
    --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus 
  
    --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame 
  
    --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx 
  
    --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid 
  
    --enable-decklink --enable-zlib
  
    libavutil      52. 83.100 / 52. 83.100
  
    libavcodec     55. 62.100 / 55. 62.100
  
    libavformat    55. 38.100 / 55. 38.100
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  5.100 /  4.  5.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, rawvideo, from 'pipe:':
  
    Duration: N/A, start: 0.000000, bitrate: 44236 kb/s
  
      Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240, 44236 kb/s, 24 tbr, 24 tbn, 24 tbc
  
  No pixel format specified, rgb24 for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264rgb @ 0000000000359de0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264rgb @ 0000000000359de0] profile High 4:4:4 Predictive, level 1.3, 4:4:4 8-bit
  
  [libx264rgb @ 0000000000359de0] 264 - core 142 r2431 ac76440 - 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=24 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 'my_output_videofile.mp4':
  
    Metadata:
  
      encoder         : Lavf55.38.100
  
      Stream #0:0: Video: h264 (libx264rgb) ([33][0][0][0] / 0x0021), rgb24, 320x240, q=-1--1, 12288 tbn, 24 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo -> libx264rgb)
  
  frame=    7 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A 

• ffmpeg only processes first image

  8 septembre 2020, par Michael Price

  I have a directory of .png images (I had previously tried .jpg until I read somewhere ffmpeg prefers .png).

  


  The images share a file numbering format cof000.png - cof358.png.

  


  I want to convert those images into a moving picture format. MPG or MP4 will be fine.

  


  The command I have tried is

  


  ffmpeg.exe -framerate 25 -i cof%03d.png -r 6 output.mp4


  


  I adapted the command from this post, here :

  


  https://stackoverflow.com/questions/53778503/ffmpeg-video-slideshow-only-takes-first-image


  


  Even after trying numerous different permutations of the command the final file only has the first image in it. I am using windows.

  


  What ffmpeg command do I need to use on Windows to compile all 180 image files into a single moving image ?

  


  Here is the output from using the command :

  


  $ ffmpeg.exe -framerate 25 -i cof%03d.png -r 6 output.mp4
ffmpeg version 4.3 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200621
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enabl
e-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enabl
e-libsrt --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-l
ibvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom
--enable-libgsm --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11
va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, image2, from 'cof%03d.png':
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgb24(pc), 1200x1200 [SAR 2834:2834 DAR 1:1], 25 tbr, 25 tbn, 25 tbc
File 'output.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 000001f7da6985c0] using SAR=1/1
[libx264 @ 000001f7da6985c0] using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2
[libx264 @ 000001f7da6985c0] profile High 4:4:4 Predictive, level 4.0, 4:4:4, 8-bit
[libx264 @ 000001f7da6985c0] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - 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_rang
e=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 s
liced_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=6 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbt
ree=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 'output.mp4':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 1200x1200 [SAR 1:1 DAR 1:1], q=-1--1, 6 fps, 12288
tbn, 6 tbc
    Metadata:
      encoder         : Lavc58.91.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=    1 fps=0.0 q=23.0 Lsize=      26kB time=00:00:00.00 bitrate=2662518.5kbits/s speed=0.000541x
video:26kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.137195%
[libx264 @ 000001f7da6985c0] frame I:1     Avg QP:16.42  size: 25465
[libx264 @ 000001f7da6985c0] mb I  I16..4:  2.1% 85.2% 12.7%
[libx264 @ 000001f7da6985c0] 8x8 transform intra:85.2%
[libx264 @ 000001f7da6985c0] coded y,u,v intra: 9.1% 0.9% 1.0%
[libx264 @ 000001f7da6985c0] i16 v,h,dc,p: 42% 39% 19%  0%
[libx264 @ 000001f7da6985c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 11% 52%  0%  0%  0%  0%  0%  0%
[libx264 @ 000001f7da6985c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 39% 17% 13%  5%  4%  6%  6%  6%  5%
[libx264 @ 000001f7da6985c0] kb/s:1222.32


  


• make video from image file using ffmpeg

  4 août 2014, par Roylisto Putra Pradana

  i have 64 images sequence and i want to make a video using that images.

  you can download the images here

  i use ffmpeg in ubuntu.
  here’s my command

  ffmpeg -r 60 -f image2 -s 1360x768 -i "/home/roylisto/Documents/Tugas Akhir/JAva version/UAVSystem/UAVSystem/tmp/result%d.png" -vcodec libx264 -crf 20 "/home/roylisto/Documents/Tugas Akhir/JAva version/UAVSystem/UAVSystem/render/test.mp4"

  it works but only 39 images has generated to a video. My question is why ffmpeg not render all images in that folder into a video, what is my mistake and how to solve it ?

  Output Command :

      ffmpeg version 2.2.git-73d820e Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jun 16 2014 10:08:12 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-x11grab --enable-libpulse --enable-libx264 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr
  
    libavutil      52. 89.100 / 52. 89.100
  
    libavcodec     55. 66.101 / 55. 66.101
  
    libavformat    55. 43.100 / 55. 43.100
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  8.100 /  4.  8.100
  
    libavresample   1.  3.  0 /  1.  3.  0
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, image2, from '/home/roylisto/Documents/Tugas Akhir/JAva version/UAVSystem/UAVSystem/tmp/result%d.png':
  
    Duration: 00:00:00.62, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgb24, 320x240, 60 fps, 60 tbr, 60 tbn, 60 tbc
  
  No pixel format specified, yuv444p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x2bccce0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
  
  [libx264 @ 0x2bccce0] profile High 4:4:4 Predictive, level 2.1, 4:4:4 8-bit
  
  [libx264 @ 0x2bccce0] 264 - core 142 r2431 ac76440 - 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=4 threads=3 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=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '/home/roylisto/Documents/Tugas Akhir/JAva version/UAVSystem/UAVSystem/render/test.mp4':
  
    Metadata:
  
      encoder         : Lavf55.43.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 320x240, q=-1--1, 60 fps, 15360 tbn, 60 tbc
  
      Metadata:
  
        encoder         : Lavc55.66.101 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  Input stream #0:0 frame changed from size:320x240 fmt:rgb24 to size:480x360 fmt:rgb24
  
  frame=   35 fps=0.0 q=-1.0 Lsize=      18kB time=00:00:00.55 bitrate= 264.7kbits/s dup=0 drop=2    
  
  video:17kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.355630%
  
  [libx264 @ 0x2bccce0] frame I:1     Avg QP:14.45  size:  1829
  
  [libx264 @ 0x2bccce0] frame P:12    Avg QP:20.02  size:   908
  
  [libx264 @ 0x2bccce0] frame B:22    Avg QP:24.15  size:   161
  
  [libx264 @ 0x2bccce0] consecutive B-frames: 14.3%  5.7%  0.0% 80.0%
  
  [libx264 @ 0x2bccce0] mb I  I16..4:  3.3% 84.3% 12.3%
  
  [libx264 @ 0x2bccce0] mb P  I16..4:  0.6%  2.9%  1.9%  P16..4:  7.6%  6.0%  2.8%  0.0%  0.0%    skip:78.3%
  
  [libx264 @ 0x2bccce0] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8: 10.1%  3.2%  0.5%  direct: 0.3%  skip:85.8%  L0:36.3% L1:56.4% BI: 7.3%
  
  [libx264 @ 0x2bccce0] 8x8 transform intra:72.3% inter:49.0%
  
  [libx264 @ 0x2bccce0] coded y,u,v intra: 34.4% 16.0% 10.7% inter: 3.6% 0.5% 0.3%
  
  [libx264 @ 0x2bccce0] i16 v,h,dc,p: 76% 21%  3%  0%
  
  [libx264 @ 0x2bccce0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 22% 50%  2%  2%  1%  5%  2%  3%
  
  [libx264 @ 0x2bccce0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 30% 32%  2%  8%  3% 11%  3%  5%
  
  [libx264 @ 0x2bccce0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x2bccce0] ref P L0: 64.9% 22.6%  9.7%  2.8%
  
  [libx264 @ 0x2bccce0] ref B L0: 86.1% 12.2%  1.7%
  
  [libx264 @ 0x2bccce0] ref B L1: 94.3%  5.7%
  
  [libx264 @ 0x2bccce0] kb/s:223.06