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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • 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 (10684)

  • libavcodec : various : remove empty directories originally for legacy DSP code

    30 mai 2024, par Sean McGovern
    libavcodec : various : remove empty directories originally for legacy DSP code

    Signed-off-by : Zhao Zhili <zhilizhao@tencent.com>
    • [DH] libavcodec/bfin/README
    • [DH] libavcodec/sparc/README

  • Black/Empty frames at beginning of video file when file Cut using FFmpeg [closed]

    28 octobre 2024, par d0tb0t

    I am cutting a video using ffmpeg and facing the Black/Empty frame at the start issue.

    &#xA;

    When Codec Copy -

    &#xA;

    -y -hide_banner -ss 0:1:0 -i file:///private/var/mobile/Containers/Data/PluginKitPlugin/94588A94-C451-426E-9E9C-A7555B6E7C25/tmp/trim.EC876F92-04BE-41F8-ADF3-8CFC84669908.MOV -to 0:1:33 -t 0:0:33 -vcodec copy -acodec copy -avoid_negative_ts make_zero -async 1 file:///var/mobile/Containers/Data/Application/728D5FED-5E6B-4A37-8DE4-E63E47B06DF9/Documents/FILES/FileCopy.mov&#xA;

    &#xA;

    When Re-Encoding -

    &#xA;

    -y -hide_banner -ss 0:1:0 -i file:///private/var/mobile/Containers/Data/PluginKitPlugin/94588A94-C451-426E-9E9C-A7555B6E7C25/tmp/trim.9F2B209B-B657-471A-AE87-7C464FF10812.MOV -to 0:1:33 -t 0:0:33 -vcodec libx264 -vf scale=1280:720 -pix_fmt yuv420p10le -color_range tv -colorspace bt2020nc -color_primaries bt2020 -color_trc arib-std-b67 -crf 28 -preset ultrafast -acodec copy -avoid_negative_ts make_zero -async 1 file:///var/mobile/Containers/Data/Application/728D5FED-5E6B-4A37-8DE4-E63E47B06DF9/Documents/FILES/FileReEncode.mov&#xA;

    &#xA;

    Both of the command provides almost the same issue. Provided a sample gif file below to show the scenario.

    &#xA;

  • lavc/h264dsp : optimise R-V V weight for shorter heights

    1er septembre 2024, par Rémi Denis-Courmont
    lavc/h264dsp : optimise R-V V weight for shorter heights

    The height is a power of two of up to 16 rows. The current code was
    
optimised for large sample counts.
    

    T-Head C908 :
    
h264_weight2_8_c :                                      211.7 ( 1.00x)
    
h264_weight2_8_rvv_i32 :                   before       184.0 ( 1.15x)
    
h264_weight2_8_rvv_i32 :                   after         54.2 ( 3.90x)
    
h264_weight4_8_c :                                      285.7 ( 1.00x)
    
h264_weight4_8_rvv_i32 :                   before       341.2 ( 0.86x)
    
h264_weight4_8_rvv_i32 :                   after         82.2 ( 3.47x)
    
h264_weight8_8_c :                                      498.7 ( 1.00x)
    
h264_weight8_8_rvv_i32 :                   before       683.7 ( 0.73x)
    
h264_weight8_8_rvv_i64 :                   after        128.5 ( 3.95x)
    
h264_weight16_8_c :                                     878.2 ( 1.00x)
    
h264_weight16_8_rvv_i32 :                  unchanged    239.5 ( 3.67x)
    

    SpacemiT X60 :
    
h264_weight2_8_c :                                      207.2 ( 1.00x)
    
h264_weight2_8_rvv_i32 :                   before       259.6 ( 0.80x)
    
h264_weight2_8_rvv_i32 :                   after         82.2 ( 2.52x)
    
h264_weight4_8_c :                                      290.8 ( 1.00x)
    
h264_weight4_8_rvv_i32 :                   before       509.6 ( 0.57x)
    
h264_weight4_8_rvv_i32 :                   after         61.5 ( 4.73x)
    
h264_weight8_8_c :                                      498.8 ( 1.00x)
    
h264_weight8_8_rvv_i32 :                   before      1019.8 ( 0.49x)
    
h264_weight8_8_rvv_i64 :                   after         71.8 ( 6.95x)
    
h264_weight16_8_c :                                     874.0 ( 1.00x)
    
h264_weight16_8_rvv_i32 :                  unchanged    249.0 ( 3.51x)
    • [DH] libavcodec/riscv/h264dsp_init.c
    • [DH] libavcodec/riscv/h264dsp_rvv.S

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