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Médias (91)

Collections - Formulaire de création rapide

19 février 2013, par kent1

Mis à jour : Février 2013

Langue : français

Type : Image

Tags : plugin, collection, MediaSPIP 0.2

1
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Les Miserables

4 juin 2012, par kent1

Mis à jour : Février 2013

Langue : English

Type : Texte

1
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Ne pas afficher certaines informations : page d’accueil

23 novembre 2011, par kent1

Mis à jour : Novembre 2011

Langue : français

Type : Image

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The Great Big Beautiful Tomorrow

28 octobre 2011, par kent1

Mis à jour : Octobre 2011

Langue : English

Type : Texte

Tags : livre, epub, book, livre électronique

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2
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Richard Stallman et la révolution du logiciel libre - Une biographie autorisée (version epub)

28 octobre 2011, par kent1

Mis à jour : Octobre 2011

Langue : English

Type : Texte

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Rennes Emotion Map 2010-11

19 octobre 2011, par kent1

Mis à jour : Juillet 2013

Langue : français

Type : Texte

Tags : map, biomaping, Christian Nold, école, Rennes

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Autres articles (111)

Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

12 avril 2011, par kent1

La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
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Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
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1er avril 2010, par kent1

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Sur d’autres sites (9359)

No such file or directory Error with custom FFMPEG + CarrierWave method

10 juillet 2013, par dodgerogers747

I am using AWS CORS to upload videos to my site, all of which works as planned.

I have the following model method which runs as an after_create callback (for speed) to take a screenshot from the video file on AWS. I plan to move this out into a delayed job but I don't think this will solve this particular issue. Please advise if mistaken.

I use FFMPEG to take a screenshot from the AWS self.file location, I then send the file to CarrierWave by saving the file to self.screenshot where it is uploaded to AWS.

Approx. 50% of the time it errors out with Errno::ENOENT - No such file or directory for the location of the screenshot image.

How can I rectify my code to remove this error and how come it only occurs around 50% of the time ? If anyone needs more code just shout.

video.rb

after_create :take_screenshot



mount_uploader :screenshot, ImageUploader



  def take_screenshot

    location = "#{Rails.root}/public/uploads/tmp/screenshots/#{unique}_#{File.basename(file)}.jpg"

    system `ffmpeg #{log_level} -i #{self.file} -ss 00:00:0#{time_frame} -vframes 1 #{location}`

    logger.debug "Trying to take screenshot from #{self.file}"

    #pass the actual file to CarrierWave to handle the image upload

    self.screenshot = File.open(location)

    self.save

    logger.debug "Deleting tmp file: #{location}: #{File.delete(location)}" if self.screenshot.present?

  end



def unique

    (0..6).map{(65+rand(26)).chr}.join

  end



def log_level

    "-loglevel panic"

  end



  def time_frame

    rand(0..3)

  end

Stack trace :

Started POST "/videos" for 127.0.0.1 at 2013-07-10 03:58:49 +0800

Processing by VideosController#create as JS

  Parameters: {"utf8"=>"✓", "authenticity_token"=>"6M1Ia+Ag2E3HVKH2PO/p7jewxSpMPdWeVHGA933Bzjw=", "video"=>{"file"=>"http://bucketname.s3.amazonaws.com/uploads/video/file/671a87fb-91de-4eaf-a38a-1b25c51798e5/Good_7iron.m4v"}}

  User Load (0.3ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 9 LIMIT 1

   (0.1ms)  BEGIN

  SQL (0.2ms)  INSERT INTO `videos` (`created_at`, `file`, `question_id`, `screenshot`, `updated_at`, `user_id`) VALUES (&#39;2013-07-09 19:58:49&#39;, &#39;http://bucketname.s3.amazonaws.com/uploads/video/file/671a87fb-91de-4eaf-a38a-1b25c51798e5/Good_7iron.m4v&#39;, NULL, NULL, &#39;2013-07-09 19:58:49&#39;, 9)

Trying to take screenshot from http://bucketname.s3.amazonaws.com/uploads/video/file/671a87fb-91de-4eaf-a38a-1b25c51798e5/Good_7iron.m4v

   (0.8ms)  ROLLBACK

Completed 500 Internal Server Error in 3550ms



Errno::ENOENT - No such file or directory - /Users/me/rails/project/public/uploads/tmp/screenshots/WCACLIC_Good_7iron.m4v.jpg:

  app/models/video.rb:24:in `initialize&#39;

  app/models/video.rb:24:in `open&#39;

  app/models/video.rb:24:in `take_screenshot&#39;

Is there a media server which just receives any rtsp streams and serves them ?

7 mai 2015, par Given92

I have some rtmp streams served over nginx-rtmp-module and the number of them will be changed dynamically.

But for the limit of client, I have to serve them in rtsp protocol. Obviously, It’s not supported by nginx-rtmp-module. So I plan to run a rtsp server in the same device, and convert the rtmp stream into rtsp stream with ffmpeg, then send the rtsp stream to the rtsp server. So that client could play the stream from the rtsp server.

The trouble is that I could not found a stable server which just receive any rtsp streams and serve them.

There is an example that fits all my need but it’s a little unstable.

I run it in verbose mode and send stream with :

ffmpeg -i rtmp://localhost/<name> -codec copy -ar 44100 -ac 1 -f rtsp rtsp://localhost:5545/<name>

</name></name>

and play the stream with :

gst-launch-0.10 playbin2 uri=rtsp://<server>/<name>

</name></server>

The video does not appear and there are some repeated warnning like this :

WARNING: from element /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstRtpVorbisDepay:rtpvorbisdepay0: Could not decode stream.

Additional debug info:

gstrtpvorbisdepay.c(633): gst_rtp_vorbis_depay_process (): /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstRtpVorbisDepay:rtpvorbisdepay0:

When I try :

gst-launch-1.0 playbin uri=rtsp://<server>/<name>

</name></server>

it is stuck and no video appear :

Setting pipeline to PAUSED ...

Pipeline is live and does not need PREROLL ...

Progress: (open) Opening Stream

Progress: (connect) Connecting to rtsp://211.68.127.12/box

Progress: (open) Retrieving server options

Progress: (open) Retrieving media info

Progress: (request) SETUP stream 0

Progress: (request) SETUP stream 1

Progress: (open) Opened Stream

Setting pipeline to PLAYING ...

New clock: GstSystemClock

Progress: (request) Sending PLAY request

Progress: (request) Sending PLAY request

Progress: (request) Sent PLAY request

When I play with :

ffplay rtsp://<server>/<name>

</name></server>

The video appears but the quality depress me.

Here is the output :

```ffplay version 2.6.2 Copyright (c) 2003-2015 the FFmpeg developers

  built with gcc 4.9.2 (GCC) 20150304 (prerelease)

  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-avresample --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-runtime-cpudetect --enable-shared --enable-swresample --enable-vdpau --enable-version3 --enable-x11grab

  libavutil      54. 20.100 / 54. 20.100

  libavcodec     56. 26.100 / 56. 26.100

  libavformat    56. 25.101 / 56. 25.101

  libavdevice    56.  4.100 / 56.  4.100

  libavfilter     5. 11.102 /  5. 11.102

  libavresample   2.  1.  0 /  2.  1.  0

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  1.100 /  1.  1.100

  libpostproc    53.  3.100 / 53.  3.100

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 2 times

[h264 @ 0x7f97f4000cc0] ref 7 overflow

[h264 @ 0x7f97f4000cc0] error while decoding MB 19 23

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 615 DC, 615 AC, 615 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 370 DC, 370 AC, 370 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] ref 4 overflow

[h264 @ 0x7f97f4000cc0] error while decoding MB 37 23

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 597 DC, 597 AC, 597 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 3 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets  0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 473 DC, 473 AC, 473 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 564 DC, 564 AC, 564 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 605 DC, 605 AC, 605 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets  0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 17 packets0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] ref 4 overflow

[h264 @ 0x7f97f4000cc0] error while decoding MB 27 20

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 742 DC, 742 AC, 742 MV errors in P frame

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 23 packets0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] out of range intra chroma pred mode at 9 4

[h264 @ 0x7f97f4000cc0] error while decoding MB 9 4

[h264 @ 0x7f97f4000cc0] concealing 1480 DC, 1480 AC, 1480 MV errors in I frame

[h264 @ 0x7f97f4000cc0] RTP: missed 7 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] Cannot use next picture in error concealment

[h264 @ 0x7f97f4000cc0] concealing 278 DC, 278 AC, 278 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets 0KB sq=    0B f=0/0   

    Last message repeated 2 times

[mp3 @ 0x7f97f4009280] RTP: missed 2 packets  0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets 0KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 5 packets

Input #0, rtsp, from 'rtsp://211.68.127.12/box':B sq=    0B f=0/0   

  Metadata:

    title           : 

  Duration: N/A, start: 0.000033, bitrate: N/A

    Stream #0:0: Video: h264 (Baseline), yuv420p(tv), 720x576 [SAR 1:1 DAR 5:4], 24 fps, 24 tbr, 90k tbn, 48 tbc

    Stream #0:1: Audio: mp3, 44100 Hz, mono, s16p, 56 kb/s

[h264 @ 0x7f97f4263d40] ref 7 overflow vq=  226KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] error while decoding MB 19 23

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 615 DC, 615 AC, 615 MV errors in P frame

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 370 DC, 370 AC, 370 MV errors in P frame

[h264 @ 0x7f97f41699a0] ref 4 overflow

[h264 @ 0x7f97f41699a0] error while decoding MB 37 23

[h264 @ 0x7f97f41699a0] Cannot use next picture in error concealment

[h264 @ 0x7f97f41699a0] concealing 597 DC, 597 AC, 597 MV errors in P frame

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 473 DC, 473 AC, 473 MV errors in P frame

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 564 DC, 564 AC, 564 MV errors in P frame

[h264 @ 0x7f97f41699a0] Cannot use next picture in error concealment

[h264 @ 0x7f97f41699a0] concealing 605 DC, 605 AC, 605 MV errors in P frame

[h264 @ 0x7f97f4264580] out of range intra chroma pred mode at 9 4  

[h264 @ 0x7f97f4264580] error while decoding MB 9 4

[h264 @ 0x7f97f4264580] concealing 1480 DC, 1480 AC, 1480 MV errors in I frame

[h264 @ 0x7f97f416a200] ref 4 overflow

[h264 @ 0x7f97f416a200] error while decoding MB 27 20

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 742 DC, 742 AC, 742 MV errors in P frame

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 278 DC, 278 AC, 278 MV errors in P frame

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets53KB sq=    0B f=0/0   

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets 60KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 10 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 2 times

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -1 -1

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -1 -1

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 3 times

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -5 -5

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -7 -7

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -5 -5

[mp3 @ 0x7f97f4009280] overread, skip -10 enddists: -6 -6

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 2 times

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -7 -7

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -6 -6

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -3 -3

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f42630e0] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 327 DC, 327 AC, 327 MV errors in P frame

[h264 @ 0x7f97f42630e0] concealing 327 DC, 327 AC, 327 MV errors in P frame

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 325 DC, 325 AC, 325 MV errors in P frame

[h264 @ 0x7f97f41699a0] Cannot use next picture in error concealment

[h264 @ 0x7f97f41699a0] concealing 371 DC, 371 AC, 371 MV errors in P frame

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -4 -4 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -2 -2

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -7 -7 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -2 -2

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets08KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets05KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] ref 3 overflow vq=  207KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] error while decoding MB 20 34

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 119 DC, 119 AC, 119 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -2 -2 0B f=0/0   

[h264 @ 0x7f97f4263d40] out of range intra chroma pred mode at 37 23

[h264 @ 0x7f97f4263d40] error while decoding MB 37 23

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 597 DC, 597 AC, 597 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -2 -2 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -3 -3

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4

[h264 @ 0x7f97f4000cc0] RTP: missed 16 packets

[h264 @ 0x7f97f41699a0] Cannot use next picture in error concealment

[h264 @ 0x7f97f41699a0] concealing 435 DC, 435 AC, 435 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] RTP: missed 2 packets211KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -2 -2

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -2 -2

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -6 -6

[h264 @ 0x7f97f42630e0] Cannot use next picture in error concealment

[h264 @ 0x7f97f42630e0] concealing 519 DC, 519 AC, 519 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets158KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 8 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets58KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets55KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets55KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets56KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets66KB sq=    0B f=0/0   

[h264 @ 0x7f97f416a200] ref 11 overflowvq=  158KB sq=    0B f=0/0   

[h264 @ 0x7f97f416a200] error while decoding MB 13 29

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 351 DC, 351 AC, 351 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets54KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets61KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 6 packets57KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -2 -2 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -8 enddists: -5 -5

[h264 @ 0x7f97f416a200] out of range intra chroma pred mode at 34 8 

[h264 @ 0x7f97f416a200] error while decoding MB 34 8

[h264 @ 0x7f97f416a200] concealing 1275 DC, 1275 AC, 1275 MV errors in I frame

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 327 DC, 327 AC, 327 MV errors in P frame

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets152KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -5 -5 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -5 -5 0B f=0/0   

[h264 @ 0x7f97f42630e0] P sub_mb_type 12 out of range at 9 26=0/0   

[h264 @ 0x7f97f42630e0] error while decoding MB 9 26

[h264 @ 0x7f97f42630e0] Cannot use next picture in error concealment

[h264 @ 0x7f97f42630e0] concealing 490 DC, 490 AC, 490 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 3 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 10 packets3KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets29KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets16KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets21KB sq=    0B f=0/0   

[h264 @ 0x7f97f42630e0] Cannot use next picture in error concealment

[h264 @ 0x7f97f42630e0] concealing 513 DC, 513 AC, 513 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets19KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets27KB sq=    0B f=0/0   

    Last message repeated 1 times

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets32KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 3 packets

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets135KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[mp3 @ 0x7f97f4009280] overread, skip -9 enddists: -2 -2

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4 0B f=0/0   

[h264 @ 0x7f97f4264580] Cannot use next picture in error concealment

[h264 @ 0x7f97f4264580] concealing 230 DC, 230 AC, 230 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 4 packets21KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 3 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 2 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets05KB sq=    0B f=0/0   

    Last message repeated 3 times

[h264 @ 0x7f97f4000cc0] RTP: missed 7 packets16KB sq=    0B f=0/0   

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets

[h264 @ 0x7f97f4263d40] ref 13 overflowvq=  110KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] error while decoding MB 12 33

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 172 DC, 172 AC, 172 MV errors in P frame

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets12KB sq=    0B f=0/0   

    Last message repeated 2 times

[h264 @ 0x7f97f416a200] Cannot use next picture in error concealment

[h264 @ 0x7f97f416a200] concealing 414 DC, 414 AC, 414 MV errors in P frame

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets116KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

    Last message repeated 1 times

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets12KB sq=    0B f=0/0   

[h264 @ 0x7f97f4000cc0] RTP: missed 6 packets

[h264 @ 0x7f97f4000cc0] RTP: missed 1 packets

[mp3 @ 0x7f97f4009280] RTP: missed 1 packets126KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 327 DC, 327 AC, 327 MV errors in P frame

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -1 -1 0B f=0/0   

[mp3 @ 0x7f97f4009280] overread, skip -5 enddists: -4 -4

[mp3 @ 0x7f97f4009280] overread, skip -7 enddists: -6 -6

^C[h264 @ 0x7f97f4263d40] ref 7 overflowq=  107KB sq=    0B f=0/0   

[h264 @ 0x7f97f4263d40] error while decoding MB 8 24

[h264 @ 0x7f97f4263d40] Cannot use next picture in error concealment

[h264 @ 0x7f97f4263d40] concealing 581 DC, 581 AC, 581 MV errors in P frame

I’m not sure whether ffmpeg or rtsp-server is the problem, does anyone have some ideas ?

Thanks very much.

No such file or directory Error with FFMPEG screenshot and CarrierWave custom model method

9 juillet 2013, par dodgerogers747

I am using AWS CORS to upload videos to my site, all of which works as planned.

I use FFMPEG to take a screenshot from the AWS self.file location, I then send the file to CarrierWave by saving the file to self.screenshot where it is uploaded to AWS.

Approx. 50% of the time it errors out with Errno::ENOENT - No such file or directory for the location of the screenshot image.

How can I rectify my code to remove this error and how come it only occurs around 50% of the time ? If anyone needs more code just shout.

video.rb

after_create :take_screenshot



mount_uploader :screenshot, ImageUploader



  def take_screenshot

    location = "#{Rails.root}/public/uploads/tmp/screenshots/#{unique}_#{File.basename(file)}.jpg"

    system `ffmpeg #{log_level} -i #{self.file} -ss 00:00:0#{time_frame} -vframes 1 #{location}`

    logger.debug "Trying to take screenshot from #{self.file}"

    #pass the actual file to CarrierWave to handle the image upload

    self.screenshot = File.open(location)

    self.save

    logger.debug "Deleting tmp file: #{location}: #{File.delete(location)}" if self.screenshot.present?

  end



def unique

    (0..6).map{(65+rand(26)).chr}.join

  end



def log_level

    "-loglevel panic"

  end



  def time_frame

    rand(0..3)

  end

Stack trace :

Started POST "/videos" for 127.0.0.1 at 2013-07-10 03:58:49 +0800

Processing by VideosController#create as JS

  Parameters: {"utf8"=>"✓", "authenticity_token"=>"6M1Ia+Ag2E3HVKH2PO/p7jewxSpMPdWeVHGA933Bzjw=", "video"=>{"file"=>"http://bucketname.s3.amazonaws.com/uploads/video/file/671a87fb-91de-4eaf-a38a-1b25c51798e5/Good_7iron.m4v"}}

  User Load (0.3ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 9 LIMIT 1

   (0.1ms)  BEGIN

  SQL (0.2ms)  INSERT INTO `videos` (`created_at`, `file`, `question_id`, `screenshot`, `updated_at`, `user_id`) VALUES (&#39;2013-07-09 19:58:49&#39;, &#39;http://bucketname.s3.amazonaws.com/uploads/video/file/671a87fb-91de-4eaf-a38a-1b25c51798e5/Good_7iron.m4v&#39;, NULL, NULL, &#39;2013-07-09 19:58:49&#39;, 9)

Trying to take screenshot from http://bucketname.s3.amazonaws.com/uploads/video/file/671a87fb-91de-4eaf-a38a-1b25c51798e5/Good_7iron.m4v

   (0.8ms)  ROLLBACK

Completed 500 Internal Server Error in 3550ms



Errno::ENOENT - No such file or directory - /Users/me/rails/project/public/uploads/tmp/screenshots/WCACLIC_Good_7iron.m4v.jpg:

  app/models/video.rb:24:in `initialize&#39;

  app/models/video.rb:24:in `open&#39;

  app/models/video.rb:24:in `take_screenshot&#39;

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