Recherche avancée

Sur d’autres sites (6332)

• How to record desktop while on x2go session via a command line tool ?

  4 décembre 2017, par haragei

  the Goal :
  I am trying to record a specific X display on a remote server with a command line tool.

  the Problem :
  The output file contains a pure black video stream for the whole duration of the recording.

  My Approach :
  I am connecting to a remote server via x2go. The Server runs Ubuntu 16.04.2 with Xfce Desktop Environment. The Display I try to record is :50 (which gets created when I connect to the x2go server). I can control the remote server totally fine through x2go.

  My commands for recording via ffmpeg (or avconv/recordmydesktop, which use ffmpeg underneath) all look more or less the same and are like this :
  ffmpeg -f x11grab -r 25 -s 1854x1176 -i :50.0 -c:v libx264 screencast.mkv

  Sample output :

  user@machine:~/$ ffmpeg -f x11grab -r 25 -s 1854x1176 -i :50.0+0,0 -c:v libx264 -vb 4000k -an screencast.mkv
  
  ffmpeg version N-86766-g264f6c6 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  
    configuration: --prefix=/home/user/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib --bindir=/home/user/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
  
    libavutil      55. 67.100 / 55. 67.100
  
    libavcodec     57.100.104 / 57.100.104
  
    libavformat    57. 75.100 / 57. 75.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 95.100 /  6. 95.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  [x11grab @ 0x1fd9b40] XFixes not available, cannot draw the mouse.
  
  [x11grab @ 0x1fd9b40] Stream #0: not enough frames to estimate rate; consider increasing probesize
  
  Input #0, x11grab, from ':50.0+0,0':
  
    Duration: N/A, start: 1500041497.684675, bitrate: N/A
  
      Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1854x1176, 25 fps, 1000k tbr, 1000k tbn, 1000k tbc
  
  File 'screencast.mkv' already exists. Overwrite ? [y/N] y
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x1fe3040] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x1fe3040] profile High 4:4:4 Predictive, level 4.2, 4:4:4 8-bit
  
  [libx264 @ 0x1fe3040] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=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=abr mbtree=1 bitrate=4000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, matroska, to 'screencast.mkv':
  
    Metadata:
  
      encoder         : Lavf57.75.100
  
      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1854x1176, q=-1--1, 4000 kb/s, 25 fps, 1k tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc57.100.104 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/4000000 buffer size: 0 vbv_delay: -1
  
  [swscaler @ 0x1fe94e0] Warning: data is not aligned! This can lead to a speedloss
  
  frame=  179 fps= 36 q=-1.0 Lsize=      16kB time=00:00:07.04 bitrate=  18.8kbits/s speed=1.43x    
  
  video:14kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 12.869934%
  
  [libx264 @ 0x1fe3040] frame I:1     Avg QP: 6.00  size:   518
  
  [libx264 @ 0x1fe3040] frame P:45    Avg QP: 0.44  size:    81
  
  [libx264 @ 0x1fe3040] frame B:133   Avg QP: 0.94  size:    73
  
  [libx264 @ 0x1fe3040] consecutive B-frames:  0.6%  1.1%  0.0% 98.3%
  
  [libx264 @ 0x1fe3040] mb I  I16..4:  0.0% 100.0%  0.0%
  
  [libx264 @ 0x1fe3040] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip:100.0%
  
  [libx264 @ 0x1fe3040] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.0%  0.0%  0.0%  direct: 0.0%  skip:100.0%
  
  [libx264 @ 0x1fe3040] final ratefactor: -23.85
  
  [libx264 @ 0x1fe3040] 8x8 transform intra:100.0%
  
  [libx264 @ 0x1fe3040] coded y,u,v intra: 0.0% 0.0% 0.0% inter: 0.0% 0.0% 0.0%
  
  [libx264 @ 0x1fe3040] i16 v,h,dc,p:  0%  0% 100%  0%
  
  [libx264 @ 0x1fe3040] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  0%  0% 100%  0%  0%  0%  0%  0%  0%
  
  [libx264 @ 0x1fe3040] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x1fe3040] kb/s:15.56

  Using : Ubuntu 16.04.2 LTS

  I have successfully accomplished to capture the display :50 with "simplescreenrecorder", but that tool has no command line interface. It uses ffmpeg also, so it somehow should be possible to caputure the display but I can´t get it to work properly.

• ffmpeg and php does not end the conversion

  23 juin 2016, par Fernand Royale

  I’m going crazy with it and do not think the solution.

  I use this code to convert videos, but the conversion did not terminate. I tried several times and stops at different points.

  echo "Starting ffmpeg...\n\n".'';
  
  echo shell_exec('/usr/src/ffmpeg/ffmpeg/ffmpeg -y -i movie.mp4 -i logo.png -filter_complex "overlay=10:10" -b:v 1500k -vcodec libx264 movie2.mp4 2> out.txt').'';  
  
  echo "Done.\n";

  Output from ffmpeg :

  ffmpeg version git-2014-01-31-dce9321 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jan 31 2014 20:37:02 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
  
    configuration: --prefix=/usr/local/ffmpeg --extra-cflags=-I/usr/local/ffmpeg/include --extra-ldflags=-L/usr/local/ffmpeg/lib --bindir=/usr/local/ffmpeg/bin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libfaac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libfreetype --enable-libtheora
  
    libavutil      52. 63.100 / 52. 63.100
  
    libavcodec     55. 49.101 / 55. 49.101
  
    libavformat    55. 28.101 / 55. 28.101
  
    libavdevice    55.  7.100 / 55.  7.100
  
    libavfilter     4.  1.101 /  4.  1.101
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'movie.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 2016-06-09 07:48:54
  
    Duration: 00:21:20.00, start: 0.000000, bitrate: 293 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 164 kb/s, -7.31 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
  
      Metadata:
  
        creation_time   : 2016-06-09 07:48:54
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
  
      Metadata:
  
        creation_time   : 2016-06-09 07:27:52
  
        handler_name    : SoundHandler
  
  Input #1, image2, from 'logo.png':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
      Stream #1:0: Video: png, rgba, 350x32 [SAR 3779:3779 DAR 175:16], 25 tbr, 25 tbn, 25 tbc
  
  [libx264 @ 0x3b1fe00] using SAR=1/1
  
  [libx264 @ 0x3b1fe00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  
  [libx264 @ 0x3b1fe00] profile High, level 3.1
  
  [libx264 @ 0x3b1fe00] 264 - core 142 r2 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=24 lookahead_threads=4 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=abr mbtree=1 bitrate=1500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'movie2.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.28.101
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 1500 kb/s, 30k tbn, 29.97 tbc (default)
  
      Stream #0:1(und): Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
  
      Metadata:
  
        creation_time   : 2016-06-09 07:27:52
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 (h264) -> overlay:main (graph 0)
  
    Stream #1:0 (png) -> overlay:overlay (graph 0)
  
    overlay (graph 0) -> Stream #0:0 (libx264)
  
    Stream #0:1 -> #0:1 (aac -> libfaac)
  
  Press [q] to stop, [?] for help
  
  frame=   14 fps=0.0 q=0.0 size=   15226kB time=00:00:00.00 bitrate=N/A   
  
  [libfaac @ 0x3b20800] Queue input is backward in time
  
  [mp4 @ 0x3b1ef80] Non-monotonous DTS in output stream 0:1; previous: 3003, current: 1024; changing to 3004. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x3b1ef80] Non-monotonous DTS in output stream 0:1; previous: 3004, current: 2048; changing to 3005. This may result in incorrect timestamps in the output file.
  
  frame=   25 fps=6.9 q=0.0 size=   15382kB time=00:00:00.23 bitrate=542687.8kbits/s   
  
  frame=   46 fps= 10 q=0.0 size=   15408kB time=00:00:00.95 bitrate=132582.7kbits/s   
  
  frame=   69 fps= 13 q=32.0 size=   15433kB time=00:00:01.71 bitrate=73576.8kbits/s   
  
  [...] 
  
  frame=11100 fps= 38 q=0.0 size=   24980kB time=00:06:09.77 bitrate= 553.4kbits/s   
  
  frame=11106 fps= 38 q=0.0 size=   25093kB time=00:06:09.98 bitrate= 555.6kbits/s   
  
  frame=11131 fps= 38 q=0.0 size=   25109kB time=00:06:10.82 bitrate= 554.7kbits/s   

  With small video works, but with great video does not end. I do not think it’s php.ini configuration because there is no error. Just do not end

• FFMPEG command works on Mac but not on Windows [duplicate]

  24 décembre 2019, par Arthur

  This question is an exact duplicate of :

  • Creating video from images produces black screen video for certain image formats [duplicate]
    
    1 answer
    

  Hi I’m working on a project which needs to create animations by playing 2000 charts in 50 fps using FFMPEG, the command is :

  ffmpeg -y -framerate 50 -i img-%04d.png -vb 40M -vcodec h264 esez.mp4

  charts are located in the same folder with name as img-0001.png img-2000.png

  It worked well on my Mac. On Windows, the command can run and generate a mp4 file. But the animation is just black screen on Windows media player. I also tried open with VLC, it has some image, but not proper at all.

  log from Windows CMD :

  ffmpeg version git-2019-12-11-4110029 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9.2.1 (GCC) 20191125
  
    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. 36.101 / 56. 36.101
  
    libavcodec     58. 64.101 / 58. 64.101
  
    libavformat    58. 35.101 / 58. 35.101
  
    libavdevice    58.  9.101 / 58.  9.101
  
    libavfilter     7. 68.100 /  7. 68.100
  
    libswscale      5.  6.100 /  5.  6.100
  
    libswresample   3.  6.100 /  3.  6.100
  
    libpostproc    55.  6.100 / 55.  6.100
  
  Input #0, image2, from 'img-%04d.png':
  
    Duration: 00:00:40.18, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgba(pc), 1000x800, 50 fps, 50 tbr, 50 tbn, 50 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 00000242aaacc6c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 00000242aaacc6c0] profile High 4:4:4 Predictive, level 3.2, 4:4:4, 8-bit
  
  [libx264 @ 00000242aaacc6c0] 264 - core 158 - 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=4 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=abr mbtree=1 bitrate=40000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'esez.mp4':
  
    Metadata:
  
      encoder         : Lavf58.35.101
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 1000x800, q=-1--1, 40000 kb/s, 50 fps, 12800 tbn, 50 tbc
  
      Metadata:
  
        encoder         : Lavc58.64.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/40000000 buffer size: 0 vbv_delay: N/A
  
  frame= 2009 fps= 90 q=-1.0 Lsize=    7569kB time=00:00:40.12 bitrate=1545.6kbits/s speed= 1.8x
  
  video:7545kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.322921%
  
  [libx264 @ 00000242aaacc6c0] frame I:9     Avg QP: 0.35  size: 60878
  
  [libx264 @ 00000242aaacc6c0] frame P:511   Avg QP: 0.74  size:  5275
  
  [libx264 @ 00000242aaacc6c0] frame B:1489  Avg QP: 4.35  size:  3010
  
  [libx264 @ 00000242aaacc6c0] consecutive B-frames:  0.7%  0.7%  2.2% 96.4%
  
  [libx264 @ 00000242aaacc6c0] mb I  I16..4: 85.1%  1.6% 13.3%
  
  [libx264 @ 00000242aaacc6c0] mb P  I16..4:  0.7%  0.0%  0.2%  P16..4:  1.3%  0.8%  0.4%  0.0%  0.0%    skip:96.7%
  
  [libx264 @ 00000242aaacc6c0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  1.6%  0.7%  0.2%  direct: 0.1%  skip:97.2%  L0:48.2% L1:39.0% BI:12.8%
  
  [libx264 @ 00000242aaacc6c0] final ratefactor: -35.51
  
  [libx264 @ 00000242aaacc6c0] 8x8 transform intra:2.6% inter:5.9%
  
  [libx264 @ 00000242aaacc6c0] coded y,u,v intra: 12.9% 2.5% 2.6% inter: 0.9% 0.5% 0.6%
  
  [libx264 @ 00000242aaacc6c0] i16 v,h,dc,p: 84% 14%  2%  0%
  
  [libx264 @ 00000242aaacc6c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18%  2% 77%  0%  1%  1%  0%  0%  0%
  
  [libx264 @ 00000242aaacc6c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 22% 19%  4%  4%  4%  4%  6%  2%
  
  [libx264 @ 00000242aaacc6c0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 00000242aaacc6c0] ref P L0: 60.2%  0.7% 21.4% 17.7%
  
  [libx264 @ 00000242aaacc6c0] ref B L0: 72.6% 20.2%  7.3%
  
  [libx264 @ 00000242aaacc6c0] ref B L1: 88.4% 11.6%
  
  [libx264 @ 00000242aaacc6c0] kb/s:1538.15

  Could anybody please help me with this problem ?

  Happy Holiday to all !