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  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

Sur d’autres sites (9016)

  • Revision b6dbf11ed5 : Merge "Adds a speed feature for fast 1-loop forw updates"

    30 août 2013, par Deb Mukherjee

    Changed Paths :
     Modify /vp9/encoder/vp9_bitstream.c


     Modify /vp9/encoder/vp9_onyx_if.c


     Modify /vp9/encoder/vp9_onyx_int.h



    Merge "Adds a speed feature for fast 1-loop forw updates"

  • Android MediaRecorder setCaptureRate() and video playback speed

    7 novembre 2013, par spitzanator

    I've got a MediaRecorder recording video, and I'm very confused by the effect of setCaptureRate().

    Specifically, I prepare my MediaRecorder as follows :

    mMediaRecorder = new MediaRecorder();
    
mCamera.stopPreview();
    
mCamera.unlock();
    
mMediaRecorder.setCamera(mCamera);
    
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
    
mMediaRecorder.setProfile(CamcorderProfile.QUALITY_TIME_LAPSE_480P);
    
mMediaRecorder.setCaptureRate(30f);
    
mMediaRecorder.setOrientationHint(270);
    
mMediaRecorder.setOutputFile(...);
    
mMediaRecorder.setPreviewDisplay(...);
    
mMediaRecorder.prepare();

    I record for five seconds (with a CountDownTimer, but that's irrelevant), and this is the file that gets generated :

    $ ffmpeg -i ~/CaptureRate30fps.mp4 
    
...
    
Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 30.00 (30/1)
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/mspitz/CaptureRate30fps.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 0
    
    compatible_brands: isom3gp4
    
    creation_time   : 2013-06-04 00:52:00
    
  Duration: 00:00:02.59, start: 0.000000, bitrate: 5238 kb/s
    
    Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 720x480, 5235 kb/s, PAR 65536:65536 DAR 3:2, 30 fps, 30 tbr, 90k tbn, 180k tbc
    
    Metadata:
    
      creation_time   : 2013-06-04 00:52:00

    Note that the Duration is just about 3 seconds. The video also plays much faster, as if it were 5 seconds of video crammed into 3.

    Now, if I record by preparing my mediaRecorder exactly as above, but subtracting the setCaptureRate(30f) line, I get a file like this :

    $ ffmpeg -i ~/NoSetCaptureRate.mp4 
    
...
    
Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 90000.00 (180000/2)
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/mspitz/NoSetCaptureRate.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 0
    
    compatible_brands: isom3gp4
    
    creation_time   : 2013-06-04 00:50:41
    
  Duration: 00:00:04.87, start: 0.000000, bitrate: 2803 kb/s
    
    Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 720x480, 2801 kb/s, PAR 65536:65536 DAR 3:2, 16.01 fps, 90k tbr, 90k tbn, 180k tbc
    
    Metadata:
    
      creation_time   : 2013-06-04 00:50:41

    Note that the Duration is as expected, about 5 seconds. The video also plays at a normal speed.

    I'm using setCaptureRate(30f) because 30 frames per second is the value of my CamcorderProfile's videoFrameRate. On my Galaxy Nexus S2 (4.2.1), omitting setCaptureRate() is fine, but when I tested on a Galaxy Nexus S3 (4.1.1), omitting setCaptureRate() results in the ever-helpful "start failed -22" error when I called mMediaRecorder.start().

    So, what am I missing ? I thought that the capture rate and the video frame rate were independent, but it's clear that they're not. Is there a way to determine programmatically what I need to set the capture rate at in order to determine that my video plays back at 1x speed ?

  • Revision c7c9901845 : added a speed feature on lpf level picking Change-Id : Id578f8afdeab3702fc838696

    7 août 2013, par Yaowu Xu

    Changed Paths :
     Modify /vp9/encoder/vp9_onyx_if.c


     Modify /vp9/encoder/vp9_onyx_int.h


     Modify /vp9/encoder/vp9_picklpf.c


     Modify /vp9/encoder/vp9_picklpf.h



    added a speed feature on lpf level picking

    Change-Id : Id578f8afdeab3702fc8386969f2d832d8f1b5420

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