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• Ruby on Rails 4 Heroku App Crash while uploading large size video

  22 juillet 2016, par Krishna Vyas

  large video file isn’t uploading on heroku and throwing Application Crash error
  Here is my Model Code :

  has_attached_file :video, :styles => {
  
    :medium => {
  
      :geometry => "640x480",
  
      :format => 'mp4',
  
      :convert_options => {
  
      :output => {
  
        :vcodec => 'libx264',
  
        :acodec => 'copy'
  
      }
  
    }
  
    },
  
    :thumb => {
  
      :geometry => "300x300#",
  
      :format => 'jpg',
  
      :time => 2,
  
      :auto_rotate => true
  
    }
  
  }, :processors => [:transcoder]
  
  
  
  validates_attachment_content_type :video, content_type: /\Avideo\/.*\Z/

  Here is my log from heroku

  2016-07-22T13:15:13.616340+00:00 app[web.1]: Command :: file -b --mime '/tmp/33028ec79c8028f75908c90d9f018aeb20160722-3-1e90wvf.mp4'
  
  2016-07-22T13:15:13.771935+00:00 app[web.1]: [AV] Running command: if command -v avprobe 2>/dev/null; then echo "true"; else echo "false"; fi
  
  2016-07-22T13:15:13.773078+00:00 app[web.1]: [AV] Running command: if command -v ffmpeg 2>/dev/null; then echo "true"; else echo "false"; fi
  
  2016-07-22T13:15:13.774121+00:00 app[web.1]: [AV] Found ["ffmpeg"], using: Ffmpeg
  
  2016-07-22T13:15:13.774159+00:00 app[web.1]: [AV] Running command: if command -v avprobe 2>/dev/null; then echo "true"; else echo "false"; fi
  
  2016-07-22T13:15:13.775225+00:00 app[web.1]: [AV] Running command: if command -v ffmpeg 2>/dev/null; then echo "true"; else echo "false"; fi
  
  2016-07-22T13:15:13.776771+00:00 app[web.1]: [AV] Found ["ffmpeg"], using: Ffmpeg
  
  2016-07-22T13:15:13.776807+00:00 app[web.1]: [AV] Running command: ffmpeg -i "/tmp/33028ec79c8028f75908c90d9f018aeb20160722-3-xbemwt.mp4" 2>&1
  
  2016-07-22T13:15:13.814982+00:00 app[web.1]: [paperclip] [transcoder] Transocding supported file /tmp/33028ec79c8028f75908c90d9f018aeb20160722-3-xbemwt.mp4
  
  2016-07-22T13:15:13.815056+00:00 app[web.1]: [AV] Adding output parameter ["acodec", "aac"]
  
  2016-07-22T13:15:13.815103+00:00 app[web.1]: [AV] Adding output parameter ["strict", "experimental"]
  
  2016-07-22T13:15:13.815289+00:00 app[web.1]: [AV] Adding output parameter [:s, "640x480"]
  
  2016-07-22T13:15:13.815379+00:00 app[web.1]: [AV] Running command: ffmpeg -i "/tmp/33028ec79c8028f75908c90d9f018aeb20160722-3-xbemwt.mp4" -acodec aac -strict experimental -s 640x480 -y "/tmp/33028ec79c8028f75908c90d9f018aeb20160722-3-xbemwt20160722-3-1pwdg2k.mp4"
  
  2016-07-22T13:15:43.237749+00:00 heroku[router]: at=error code=H12 desc="Request timeout" method=POST path="/courses/5/sections/7/lessons/11" host=xxxxx.herokuapp.com request_id=a1408ac7-c7c3-40f4-8365-86156d2d2314 fwd="43.255.56.1" dyno=web.1 connect=0ms service=188655ms status=503 bytes=0

• dnn/native : unify error return to DNN_ERROR

  25 août 2020, par Ting Fu

  dnn/native : unify error return to DNN_ERROR
  Unify all error return as DNN_ERROR, in order to cease model executing
  
  when return error in ff_dnn_execute_model_native layer_func.pf_exec
  Signed-off-by : Ting Fu <ting.fu@intel.com>
  

  • [DH] libavfilter/dnn/dnn_backend_native.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_avgpool.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_conv2d.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_depth2space.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_mathbinary.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_mathunary.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_pad.c

• How to transcode to another video parameters ? [on hold]

  23 mai 2014, par user3668381

  Google, man pages and any docs I found didn t shown anything relevant so...

  I want to be able to concatene video with ffmpeg, this part is simple, but fail (freeze or massive frame dropping) if the videos don t have the same properties.

  But for now, I didn t found anything else but trying to set a lot of options, expecting to get the good properties... But when they aren t rounded down (or up), you just can t set them (tbr, tbn...).

  So my question is, is there any hidden option in ffmpeg to take the properties of another video (so -copy won t work) as the properties of the transcode.

  Illustration :

  This is the video from which I wan t to copy the parameters :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cdr.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 2013-07-04 11:04:27
  
      encoder         : Lavf54.11.100
  
    Duration: 00:06:26.96, start: 0.000000, bitrate: 804 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 854x480 [SAR 1280:1281 DAR 16:9], 753 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc (default)
  
      Metadata:
  
        creation_time   : 2013-07-04 11:04:27
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 44 kb/s (default)
  
      Metadata:
  
        creation_time   : 2013-07-04 11:04:27
  
        handler_name    : SoundHandler
  
  At least one output file must be specified

  For now, my command is ffmpeg -i video.mp4 -c:v h264 -c:a libfdk_aac -aspect 16:9 -b:v 753k -b:a 44k output.mp4

  But it turn out that output.mp4 reveal :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.21.100
  
    Duration: 00:00:07.11, start: 0.046440, bitrate: 685 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 854x480 [SAR 1280:1281 DAR 16:9], 637 kb/s, 15 fps, 15 tbr, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 45 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  At least one output file must be specified

  As we can see, audio bitrate is rounded, tbn is off the chart, general bitrate isn t the same and on and on and on...

  Is there any better way but to add options again and again and hope that nothing will be rounded ? Something like ffmpeg -i video.mp4 -use_properties_of model.mp4 output.mp4 ?