Recherche avancée

Médias (0)

Mot : - Tags -/flash

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (65)

  • 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 (...)

  • Les images

    15 mai 2013

  • Taille des images et des logos définissables

    9 février 2011, par

    Dans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
    Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...)

Sur d’autres sites (5978)

  • Double subtitles when hardcoding from .mkv container

    4 novembre 2022, par Goran Hinic

    I'm trying to hardcode subtitles into a file that's in .mkv container, using one of the subtitle strams from the container. I want subtitles to have a black background on them. I'm also trying to keep 10bit encoding and preserve high quiality. Result is ok, except that all subtitles are doubled. So there is a layer of good subtitles in white on black background, and also, half of the font size down, same subtitles in black. Can someone point out the issue with my command ?
Thank you.

    


    Ran this command :

    


    


    ffmpeg -i movie.mkv -vf "subtitles=movie.mkv:si=0:force_style='OutlineColour=&000000000,BorderStyle=3,Outline=3,Shadow=0,MarginV=20'" -c:v libx265 -crf 23 -preset slow -x265-params profile=main10 -c:a copy movie_subs.mkv

    


    


    Expected : White subtitles on black background
Actual : White subtitles on black background with black subtitles half font size down

    


  • swscale/aarch64 : dotprod implementation of rgba32_to_Y

    3 mars, par Krzysztof Pyrkosz
    swscale/aarch64 : dotprod implementation of rgba32_to_Y

    The idea is to split the 16 bit coefficients into lower and upper half,
    
invoke udot for the lower half, shift by 8, and follow by udot for the
    
upper half.
    

    Benchmark on A78 :
    
bgra_to_y_128_c :                                       682.0 ( 1.00x)
    
bgra_to_y_128_neon :                                    181.2 ( 3.76x)
    
bgra_to_y_128_dotprod :                                 117.8 ( 5.79x)
    
bgra_to_y_1080_c :                                     5742.5 ( 1.00x)
    
bgra_to_y_1080_neon :                                  1472.5 ( 3.90x)
    
bgra_to_y_1080_dotprod :                                906.5 ( 6.33x)
    
bgra_to_y_1920_c :                                    10194.0 ( 1.00x)
    
bgra_to_y_1920_neon :                                  2589.8 ( 3.94x)
    
bgra_to_y_1920_dotprod :                               1573.8 ( 6.48x)
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libswscale/aarch64/input.S
    • [DH] libswscale/aarch64/swscale.c

  • FFMPEG command on Android Jave Process does fully execute

    8 novembre 2014, par user2491598

    The issue I am having is very strange. I have an FFMPEG executable binary library installed on my Android and I am trying to execute this command

    ffmpeg -loop 1 -i /storage/emulated/0/image.jpg -i /storage/emulated/0/input.mov -filter_complex '[0:v][1:v] overlay' -shortest /storage/emulated/0/output.mp4

    and my JAVA code looks like

    try {
    
            Runtime.getRuntime().exec("chmod 700 " + mFfmpegPath);
    
            cmd.add(mFfmpegPath);
    
            cmd.add("-loop");
    
            cmd.add("1");
    
            cmd.add("-i");
    
            cmd.add("/storage/emulated/0/image.jpg");
    
            cmd.add("-i");
    
            cmd.add("/storage/emulated/0/pizza.mov");
    
            cmd.add("-filter_complex");
    
            cmd.add("'[0:v][1:v] overlay'");
    
            cmd.add("-shortest");
    
            cmd.add("-vcodec");
    
            cmd.add("-libx264");
    
            cmd.add("-strict");
    
            cmd.add("experimental");
    
            cmd.add("/storage/emulated/0/output22.mp4");
    

    
            final ProcessBuilder pb = new ProcessBuilder(cmd);
    
            pb.redirectErrorStream();
    
            ProcessRunnable run =  new ProcessRunnable(pb);
    
            final Process p = pb.start();
    
            Log.i("FFMPEG","stdError= " + getSTD(p.getErrorStream()));
    
            p.waitFor();
    
            return run;
    
        } catch (IOException e1) {
    
            // TODO Auto-generated catch block
    
            e1.printStackTrace();
    
        } catch (InterruptedException e) {
    
            // TODO Auto-generated catch block
    
            e.printStackTrace();
    
        }

    For some reason I the execution does not fully finish and it stops. It does not even create an output file in my Android storage. Here is the log file from the process stream

    11-07 20:34:21.636: I/FFMPEG(6259): stdError= WARNING: linker: /data/data/za.jamie.androidffmpegcmdline/app_bin/ffmpeg has text relocations. This is wasting memory and is a security risk. Please fix.
    
11-07 20:34:21.636: I/FFMPEG(6259): ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
    
11-07 20:34:21.636: I/FFMPEG(6259):   built on Nov  8 2014 00:21:33 with gcc 4.8 (GCC)
    
11-07 20:34:21.636: I/FFMPEG(6259):   configuration: --target-os=linux --cross-prefix=/home/ubuntu/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/ubuntu/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-avcodec --enable-avformat --enable-swresample --enable-swscale --enable-postproc --enable-avfilter --enable-avresample --disable-libfreetype --enable-libfribidi --disable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --enable-ffplay --enable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/ubuntu/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/ubuntu/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/ubuntu/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/ubuntu/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
11-07 20:34:21.636: I/FFMPEG(6259):   libavutil      54.  7.100 / 54.  7.100
    
11-07 20:34:21.636: I/FFMPEG(6259):   libavcodec     56.  1.100 / 56.  1.100
    
11-07 20:34:21.636: I/FFMPEG(6259):   libavformat    56.  4.101 / 56.  4.101
    
11-07 20:34:21.636: I/FFMPEG(6259):   libavdevice    56.  0.100 / 56.  0.100
    
11-07 20:34:21.636: I/FFMPEG(6259):   libavfilter     5.  1.100 /  5.  1.100
    
11-07 20:34:21.636: I/FFMPEG(6259):   libavresample   2.  1.  0 /  2.  1.  0
    
11-07 20:34:21.636: I/FFMPEG(6259):   libswscale      3.  0.100 /  3.  0.100
    
11-07 20:34:21.636: I/FFMPEG(6259):   libswresample   1.  1.100 /  1.  1.100
    
11-07 20:34:21.636: I/FFMPEG(6259):   libpostproc    53.  0.100 / 53.  0.100
    
11-07 20:34:21.636: I/FFMPEG(6259): Input #0, image2, from '/storage/emulated/0/image.jpg':
    
11-07 20:34:21.636: I/FFMPEG(6259):   Duration: 00:00:00.04, start: 0.000000, bitrate: 35211 kb/s
    
11-07 20:34:21.636: I/FFMPEG(6259):     Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg), 640x640 [SAR 1:1 DAR 1:1], 25 fps, 25 tbr, 25 tbn, 25 tbc
    
11-07 20:34:21.636: I/FFMPEG(6259): Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/input.mov':
    
11-07 20:34:21.636: I/FFMPEG(6259):   Metadata:
    
11-07 20:34:21.636: I/FFMPEG(6259):     major_brand     : qt  
    
11-07 20:34:21.636: I/FFMPEG(6259):     minor_version   : 537199360
    
11-07 20:34:21.636: I/FFMPEG(6259):     compatible_brands: qt  
    
11-07 20:34:21.636: I/FFMPEG(6259):     creation_time   : 2014-10-30 23:57:31
    
11-07 20:34:21.636: I/FFMPEG(6259):     xmp             : &lt;?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
    
11-07 20:34:21.636: I/FFMPEG(6259):                     : 
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :  
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :   FFMPEG(6259):                     :     xmlns:xmp="http://ns.adobe.com/xap/1.0/"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :     xmlns:xmpDM="http://ns.adobe.com/xmp/1.0/DynamicMedia/"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :     xmlns:stDim="http://ns.adobe.com/xap/1.0/sType/Dimensions#"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :     xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :     xmlns:stEvt="http://ns.adobe.com/xap/1.0/sType/ResourceEvent#"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :     xmlns:creatorAtom="http://ns.adobe.com/creatorAtom/1.0/"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :     xmlns:dc="http://purl.org/dc/elements/1.1/"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmp:CreateDate="2014-10-30T16:57:31-07:00"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmp:ModifyDate="2014-10-30T15:57:57-07:00"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmp:CreatorTool="Adobe After Effects CC 2014 (Windows)"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmp:MetadataDate="2014-10-30T15:57:57-07:00"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpDM:startTimeScale="30"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpDM:startTimeSampleSize="1"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpDM:videoFrameRate="30.000000"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpDM:videoFieldOrder="Progressive"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpDM:videoPixelAspectRatio="1/1"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpDM:audioSampleRate="48000"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpDM:audioSampleType="16Int"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpDM:audioChannelType="Stereo"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpMM:InstanceID="xmp.iid:b791d2dc-6759-ee45-b5a2-692ecba2c4fd"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpMM:DocumentID="xmp.did:d3fde073-8716-144a-acbd-7676f27002a0"
    
11-07 20:34:21.636: I/FFMPEG(6259):                     :    xmpMM:OriginalDocumentID="xmp.
    
11-07 20:34:21.836: E/ViewRootImpl(6259): sendUserActionEvent() mView == null

    Please help :(

Navigation