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• Chrome struggles to play videos

  11 décembre 2017, par Cameron

  I have some video files I want to display on a webpage using the HTML5 video player. The videos were sent to me at 1920x1080 in H.254 MP4 format.

  Using FFMPEG I have converted them so I have a smaller Mp4 file, an OGV file, and a WebM file using the following commands :

  ffmpeg -i FILE.mp4 -vcodec h264 FILE.mp4
  
  
  
  ffmpeg -i FILE.mp4 -acodec libvorbis -vcodec libtheora -f ogv FILE.ogv
  
  
  
  ffmpeg -i FILE.mp4 -c:v libvpx -crf 10 -b:v 1M -c:a libvorbis FILE.webm

  And then the video is embedded into the page like so :

  <video preload="metadata" crossorigin="anonymous" poster="poster.jpg" controls="controls" playsinline="playsinline">
  
      <source src="FILE.webm" type="video/webm">
  
      <source src="FILE.ogv" type="video/ogv">
  
      <source src="FILE.mp4" type="video/mp4">
  
  </source></source></source></video>

  However when I click to play the video in Chrome, it stops after a few seconds and then if I click play again it restarts. If I right click and open the video in a new tab I just see a tiny player and not the video e.g.
  

  The same happens for all three formats. But if I refresh the browser enough times I can get the MP4 file to show up in the new tab though it still suffers from the aforementioned bug of playing for a few seconds before failing.

  I have tested this in Firefox and Safari and it works fine ! In fact it even works in IE and Edge :D And I can also play the videos in a player on the machine itself... e.g. QuickTime.

  Any ideas why Chrome is acting this way ? Or any resolutions ? I’m seeing the same behaviour on Chrome for Windows and Mac. Is the way I have converted the videos using FFMPEG in anyway a cause that could affect Chrome but not other browsers ?

  Chrome version tested on : Version 63.0.3239.84 (Official Build) (64-bit)

  Output from ffprobe as per the comments on the one of the webm files :

  ffprobe version 3.4 Copyright (c) 2007-2017 the FFmpeg developers
  
    built with Apple LLVM version 7.3.0 (clang-703.0.31)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-ffplay --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --enable-openssl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.3.0/include/openjpeg-2.3 --enable-nonfree
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  Input #0, matroska,webm, from 'FILE.webm':
  
    Metadata:
  
      COMPATIBLE_BRANDS: mp42mp41
  
      MAJOR_BRAND     : mp42
  
      MINOR_VERSION   : 0
  
      ENCODER         : Lavf57.83.100
  
    Duration: 00:00:52.57, start: 0.000000, bitrate: 910 kb/s
  
      Stream #0:0(eng): Video: vp8, yuv420p(progressive), 1920x1080, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
  
      Metadata:
  
        HANDLER_NAME    : Alias Data Handler
  
        ENCODER         : Lavc57.107.100 libvpx
  
        DURATION        : 00:00:52.563000000
  
      Stream #0:1(eng): Audio: vorbis, 48000 Hz, stereo, fltp (default)
  
      Metadata:
  
        HANDLER_NAME    : Alias Data Handler
  
        ENCODER         : Lavc57.107.100 libvorbis
  
        DURATION        : 00:00:52.568000000

• Burn subtitles in a stop motion video, with hardware acceleration

  9 février 2020, par Belinde

  I’m trying to make a year long stop motion video with the images taken from a webcam. I’ve created a input.txt file with this format inside :

  ffconcat version 1.0
  
  
  
  file 'amianthe201909031230.jpg'
  
  duration 0.093034825870647
  
  
  
  file 'amianthe201909031330.jpg'
  
  duration 0.093034825870647

  The command I’ve crafted (mostly taken from the example in the official ffmpeg documentation) is :

  ffmpeg \
  
      -y \
  
      -hwaccel vaapi \
  
      -hwaccel_device /dev/dri/renderD128 \
  
      -hwaccel_output_format vaapi \
  
      -f concat \
  
      -i input.txt \
  
      -vf 'hwmap=mode=read+write+direct,format=nv12,ass=subtitles.ass,hwmap' \
  
      -c:v h264_vaapi \
  
      ~/amianthe.mp4

  But it badly fails with this output :

  ffmpeg version 4.1.4-1build2 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9 (Ubuntu 9.2.1-4ubuntu1)
  
    configuration: --prefix=/usr --extra-version=1build2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  Input #0, concat, from 'input.txt':
  
    Duration: 00:00:18.70, start: 0.000000, bitrate: 5 kb/s
  
      Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1920x1080 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (h264_vaapi))
  
  Press [q] to stop, [?] for help
  
  [Parsed_ass_2 @ 0x5557f4ec4ac0] Shaper: FriBidi 0.19.7 (SIMPLE) HarfBuzz-ng 2.6.1 (COMPLEX)
  
  [Parsed_ass_2 @ 0x5557f4ec4ac0] Using font provider fontconfig
  
  [Parsed_ass_2 @ 0x5557f4ec4ac0] Added subtitle file: 'subtitles.ass' (4 styles, 2 events)
  
  [Parsed_hwmap_3 @ 0x5557f5381ec0] Unsupported formats for hwmap: from nv12 (vaapi_vld) to vaapi_vld.
  
  [Parsed_hwmap_3 @ 0x5557f5381ec0] Failed to configure output pad on Parsed_hwmap_3
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: Invalid argument
  
  Error while processing the decoded data for stream #0:0
  
  Conversion failed!

  I’m honestly lost : from my understanding, all the elaboration should be done directly in the video card memory, so I don’t understand why it’s converting the surface format. Is there some other parameter I must put in format ? What am I missing ?

• FFMPEG command not working on Ubuntu

  7 novembre 2016, par brijesh kumar

  I stuck with the command "anequalizer" in ffmpeg. I’m following the official documantation. It has example command in documentation like this

  anequalizer=c0 f=200 w=100 g=-10 t=1|c1 f=200 w=100 g=-10 t=1

  and when I run the command

  ffmpeg /home/overtatech-1/Music/jeena.mp3 -af "anequalizer=c0 f=200 w=100 g=-10 t=1|c1 f=200 w=100 g=-10 t=1" /home/overtatech-1/Music/jeena_new.mp3

  on console, I get error "c1:Command not found"

  Lenovo-G50-80:~$ ffmpeg /home/overtatech-1/Music/jeena.mp3 -af  "anequalizer=c0 f=200 w=100 g=-10 t=1|c1 f=200 w=100 g=-10 t=1" /home/overtatech-1/Music/jeena_new.mp3
  
  ffmpeg version 2.8.8-0ubuntu0.16.04.1 Copyright (c) 2000-2016 the FFmpeg developers
  
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.2) 20160609
  
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --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-librtmp --enable-libschroedinger --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-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  
  WARNING: library configuration mismatch
  
  avcodec     configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --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-librtmp --enable-libschroedinger --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-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv --enable-version3 --disable-doc --disable-programs --disable-avdevice --disable-avfilter --disable-avformat --disable-avresample --disable-postproc --disable-swscale --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libvo_aacenc --enable-libvo_amrwbenc
  
  libavutil      54. 31.100 / 54. 31.100
  
  libavcodec     56. 60.100 / 56. 60.100
  
  libavformat    56. 40.101 / 56. 40.101
  
  libavdevice    56.  4.100 / 56.  4.100
  
  libavfilter     5. 40.101 /  5. 40.101
  
  libavresample   2.  1.  0 /  2.  1.  0
  
  libswscale      3.  1.101 /  3.  1.101
  
  libswresample   1.  2.101 /  1.  2.101
  
  libpostproc    53.  3.100 / 53.  3.100
  
  Output #0, mp3, to '/home/overtatech-1/Music/jeena.mp3':
  
  Output file #0 does not contain any stream