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• FFMPEG Keyframes Exception

  3 avril 2017, par newToRacket

  I was hoping someone could help me, when pulling keyframes from a .mp4 file using FFMPEG in python I get this error :

       C:\Python27\python.exe "C:/Coll. Detection/UAS_Detection/GUI.py"
  
  in GUI main
  
  ('filePath', PyQt4.QtCore.QString(u'C:\\Users\\Razor\\Downloads\\video_test_512kb.mp4'), '\n')
  
  File Path -> C:\Users\Razor\Downloads\video_test_512kb.mp4
  
  SingleDetect C:\Users\Razor\Downloads\video_test_512kb.mp4
  
  ffmpeg version N-84679-gd65b595 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.3.0 (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-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 51.100 / 55. 51.100
  
    libavcodec     57. 86.103 / 57. 86.103
  
    libavformat    57. 67.100 / 57. 67.100
  
    libavdevice    57.  3.101 / 57.  3.101
  
    libavfilter     6. 78.100 /  6. 78.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\Razor\Downloads\video_test_512kb.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: mp41
  
      creation_time   : 1970-01-01T00:00:00.000000Z
  
      title           : test file mp4 - http://www.archive.org/details/Pbtestfilemp4videotestmp4
  
      encoder         : Lavf51.10.0
  
      comment         : license:  http://creativecommons.org/licenses/by-nc-sa/2.5/
  
    Duration: 00:00:16.27, start: 0.000000, bitrate: 562 kb/s
  
      Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 512 kb/s, 15 fps, 15 tbr, 15 tbn, 30 tbc (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 45 kb/s (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
  
  Press [q] to stop, [?] for help
  
  [swscaler @ 0000000003500e00] deprecated pixel format used, make sure you did set range correctly
  
  Output #0, image2, to 'tmp/%d.jpeg':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: mp41
  
      comment         : license:  http://creativecommons.org/licenses/by-nc-sa/2.5/
  
      title           : test file mp4 - http://www.archive.org/details/Pbtestfilemp4videotestmp4
  
      encoder         : Lavf57.67.100
  
      Stream #0:0(und): Video: mjpeg, yuvj420p(pc), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 15 fps, 15 tbn, 15 tbc (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : VideoHandler
  
        encoder         : Lavc57.86.103 mjpeg
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
  
  2017-04-02 18:36:07.832000
  
  Traceback (most recent call last):
  
    File "Detection.py", line 59, in <module>
  
      draw_detections(frame, found)
  
    File "Detection.py", line 32, in draw_detections
  
      result = Result.objects.create(picture=img, x=x, y=y, w=w, h=h)
  
  AttributeError: type object 'Result' has no attribute 'objects'
  
  frame=   21 fps=0.0 q=19.3 Lsize=N/A time=00:00:16.06 bitrate=N/A speed= 191x    
  
  video:160kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  
  
  Process finished with exit code 0
  
  </module>

  I’m trying to run these keyframes through an opencv human shape recognition api. It saves close to 300 keyframes to the folder I specified but for some reason the program just hangs afterwords instead of running the open cv hogger api on the newly saved keyframes. Will post script if it will help. Thank you for any help you can provide !!!

• FFMPEG command (For capturing keyframe) executes, but not creating the output file

  3 mai 2017, par sforsandeep

  Im trying with an FFMPEG command using the latest FFMPEG exe. The command executes fine. But the output file is not being created.

  Here is the command I tried from DOS prompt. According to a colleagues comment, it was (The command) working before without any trouble.

  D:\Utilities\FFMPegVideoManager\FFMPEG_updated\ffmpeg.exe -i
  
  "M:\content\video.mp4" -y -ss 1 -frames 1
  
  "E:\frame\testtest.jpg"

  The output after the execution is

  C:\Users\ABCD>D:\Utilities\FFMPegVideoManager\FFMPEG_updated\ffmpeg.exe -i "M:\FTP Home Directory\LocalUser\WAP_UAT\Processing Folder\wspa1\Delivery\San4\content\0101_eatingredpanda.mp4" -y -ss 1 -frames 1 "E:\sandeep\testtest.jpg"
  
  ffmpeg version N-85266-g1229007 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.3.0 (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-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 59.100 / 55. 59.100
  
    libavcodec     57. 90.100 / 57. 90.100
  
    libavformat    57. 72.100 / 57. 72.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 83.100 /  6. 83.100
  
    libswscale      4.  7.100 /  4.  7.100
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'M:\content\0101_eatingredpanda.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      creation_time   : 1970-01-01T00:00:00.000000Z
  
      encoder         : Lavf52.31.0
  
    Duration: 00:00:19.52, start: 0.000000, bitrate: 12506 kb/s
  
      Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 960x540 [SAR 1:1 DAR 16:9], 12373 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg4 (native) -> mjpeg (native))
  
  Press [q] to stop, [?] for help
  
  [swscaler @ 0000000006238340] deprecated pixel format used, make sure you did set range correctly
  
  Output #0, image2, to 'E:\sandeep\testtest.jpg':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      encoder         : Lavf57.72.100
  
      Stream #0:0(eng): Video: mjpeg, yuvj420p(pc), 960x540 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 1970-01-01T00:00:00.000000Z
  
        handler_name    : VideoHandler
  
        encoder         : Lavc57.90.100 mjpeg
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
  
  frame=    1 fps=0.0 q=6.6 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=0.447x
  
  video:48kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown 

  So from the output detials it seems to be fine. So why its not creating the output file ? Thanks

• How to merge a segmented webvtt subtitle file and output a single srt file ?

  24 janvier 2019, par Dobbelina

  How to merge a segmented webvtt subtitle file and output a single srt file ?,
  m3u8 looks like this example :

  #EXTM3U
  
  #EXT-X-VERSION:4
  
  #EXT-X-PLAYLIST-TYPE:VOD
  
  #EXT-X-MEDIA-SEQUENCE:1
  
  #EXT-X-INDEPENDENT-SEGMENTS
  
  #EXT-X-TARGETDURATION:4
  
  #USP-X-TIMESTAMP-MAP:MPEGTS=900000,LOCAL=1970-01-01T00:00:00Z
  
  #EXTINF:4, no desc
  
  0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-1.webvtt
  
  #EXTINF:4, no desc
  
  0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-2.webvtt
  
  #EXTINF:4, no desc
  
  0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-3.webvtt
  
  #EXTINF:4, no desc
  
  0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-4.webvtt
  
  #EXTINF:4, no desc
  
  0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-5.webvtt
  
  #EXTINF:4, no desc
  
  0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-6.webvtt
  
  #EXT-X-ENDLIST

  I noticed that each segment is not synchronized/cued against total playing time, but against the individual ts segments.
  If ffmpeg could be used to do this, what magic input do i need to give it ?

  A single correctly cued vtt file would work to.
  Thanks for any replies you lovely people !