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  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

Sur d’autres sites (9906)

  • Revision 116037 : mettre toute la partie de parsage des conditions dans une fonction à part

    20 juillet 2019, par maieul@… — Log

    mettre toute la partie de parsage des conditions dans une fonction à part

  • Detect scene change on part of the frame

    16 juin 2021, par user18130814200115

    I have a video file of an online lecture cosisting of a slideshow with audio in the background.
    
I want to save images of each slide as well as the timestamp of that slide.
I do this using the scene and metadata filters :

    


    ffmpeg -i week-01.mp4 -filter_complex "select='gt(scene,0.011)',metadata=print:file=frames/time.txt" -vsync vfr frames/img%03d.jpg


    


    This works fine exept for one thing, there is a timer onscreen on the right in the video file.
If i set the thershold small enough to pick up all the slide changes, it also picks up the timer changes.

    


    So here is my question, Can I ask ffmpeg to :

    


      

    1. analize part of the frame (only the right side till roughly 75% to the left).

      2. 


    2. Then, on detecting a scene change in this area, save the entire frame and the timestamp.

      3. 


    


    I though of making a script that

    


      

    1. crops the video and saves it alongside the origional

      2. 


    2. analize the cropped video for scene changes and save the timestamps

      3. 


    3. extract the frames from the origional video using the timestamps

      4. 


    


    Is there a better/faster/shorter way to do this ?
Thanks in advance !

    


  • Revision 3c5244886a : Fixes part of merge regression from adding arf parameters. From Change Ibf0c30

    10 juillet 2015, par Debargha Mukherjee

    Changed Paths :
     Modify /test/vp9_arf_freq_test.cc


     Modify /vp9/encoder/vp9_firstpass.c


     Modify /vp9/encoder/vp9_ratectrl.c


     Modify /vp9/vp9_cx_iface.c



    Fixes part of merge regression from adding arf parameters.

    From Change Ibf0c30b72074b3f71918ab278ccccc02a95a70a0
    There is still an issue relating to one animated test clip with repeat
    patterns where this change effectively increase the default maximum
    arf interval by +1. This can be examined seperately.

    Change-Id : Idd01d5480fc45202d8a059a0c3afc0997cc5bdd1

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