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    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • Ecrire une actualité

    21 juin 2013, par

    Présentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
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    Vous pouvez personnaliser le formulaire de création d’une actualité.
    Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...)

  • 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

Sur d’autres sites (2279)

  • flv reencode to mp4 for iphone/ipod via ffmpeg and x264 (quality issue)

    3 octobre 2011, par zeroasterisk

    There are a lot of questions on this topic, and I've read most of them and most of the google search results I could come up with.

    When I use FFMPEG to convert a FLV to a iphone3 compatble MP4 file, it just doesn't preserver enough of the quality. Yes, I've worked the hell out of -sameq and -b and -bt settings, text just isn't readable.

    Next I tried to split the video out and process it directly, using these instructions :
    https://sites.google.com/site/linuxencoding/x264-encoding-guide

    The problem is myplayer (via ffmpeg) was not able to determine the duration of the FLV (even though the metadata was set).

    (I assume) Because of that unknown duration, when I create the MP4 file, the resulting x264 file plays through super-fast while the audio plays at the normal rate.

    user@server:/tmp# mplayer -nosound -benchmark -sws 9 -vf dsize=640:480:0,scale=0:0,expand=640:480 -vo yuv4mpeg:file=>(x264 --demuxer y4m --crf 0 --preset slow --threads auto --output output.264 - 2>x264.log) 'input.flv'
    
MPlayer 1.0rc4-4.4.5 (C) 2000-2010 MPlayer Team
    
mplayer: could not connect to socket
    
mplayer: No such file or directory
    
Failed to open LIRC support. You will not be able to use your remote control.
    

    
Playing input.flv.
    
libavformat file format detected.
    
[flv @ 0x1202460]Estimating duration from bitrate, this may be inaccurate
    
[lavf] stream 0: video (vp6f), -vid 0
    
[lavf] stream 1: audio (nellymoser), -aid 0
    
VIDEO:  [VP6F]  1680x992  0bpp  1000.000 fps   33.4 kbps ( 4.1 kbyte/s)
    
Clip info:
    
 audiocodecid: 6
    
 audiodatarate: 86
    
 audiosamplerate: 44100
    
 audiosamplesize: 16
    
 audiosize: 6097005
    
 canSeekToEnd: true
    
 datasize: 8609138
    
 duration: 567
    
 framerate: 2
    
 hasAudio: true
    
 hasCuePoints: false
    
 hasKeyframes: true
    
 hasMetadata: true
    
 hasVideo: true
    
 height: 992
    
 lasttimestamp: 567
    
 metadatacreator: flvtool++ (Facebook, Motion project, dweatherford)
    
 stereo: false
    
 totalframes: 1043
    
 videocodecid: 4
    
 videodatarate: 33
    
 videosize: 2316256
    
 width: 1680
    
Using (default) progressive frame mode.Opening video filter: [expand w=640 h=480]
    
Expand: 640 x 480, -1 ; -1, osd: 0, aspect: 0.000000, round: 1
    
Opening video filter: [scale w=0 h=0]
    
Opening video filter: [dsize=640:480:0]
    
==========================================================================
    
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
    
Selected video codec: [ffvp6f] vfm: ffmpeg (FFmpeg VP6 Flash)
    
==========================================================================
    
Audio: no sound
    
Starting playback...
    
Movie-Aspect is undefined - no prescaling applied.
    
[swscaler @ 0x7f0c738b9620]Lanczos scaler, from yuv420p to yuv420p using MMX2
    
VO: [yuv4mpeg] 640x480 => 641x480 Planar YV12

    I have also tried specifying FPS, but no change in results

    user@server:/tmp# mplayer -nosound -fps 25-benchmark -sws 9 -vf dsize=640:480:0,scale=0:0,expand=640:480 -vo yuv4mpeg:file=>(x264 --demuxer y4m --fps 25 --crf 0 --preset slow --threads auto --output output.264 - 2>x264.log) 'input.flv'

    Can someone tell me how to either :

    1. fix my split A/V processing/timing/duration issues ?
    2. improve the
      quality of the FFMPEG conversion of FLV to iphone3 compatible
      format ?

  • flv reencode to mp4 for iphone/ipod via ffmpeg and x264 (quality issue)

    3 octobre 2011, par zeroasterisk

    There are a lot of questions on this topic, and I've read most of them and most of the google search results I could come up with.

    When I use FFMPEG to convert a FLV to a iphone3 compatble MP4 file, it just doesn't preserver enough of the quality. Yes, I've worked the hell out of -sameq and -b and -bt settings, text just isn't readable.

    Next I tried to split the video out and process it directly, using these instructions :
    https://sites.google.com/site/linuxencoding/x264-encoding-guide

    The problem is myplayer (via ffmpeg) was not able to determine the duration of the FLV (even though the metadata was set).

    (I assume) Because of that unknown duration, when I create the MP4 file, the resulting x264 file plays through super-fast while the audio plays at the normal rate.

    user@server:/tmp# mplayer -nosound -benchmark -sws 9 -vf dsize=640:480:0,scale=0:0,expand=640:480 -vo yuv4mpeg:file=>(x264 --demuxer y4m --crf 0 --preset slow --threads auto --output output.264 - 2>x264.log) 'input.flv'
    
MPlayer 1.0rc4-4.4.5 (C) 2000-2010 MPlayer Team
    
mplayer: could not connect to socket
    
mplayer: No such file or directory
    
Failed to open LIRC support. You will not be able to use your remote control.
    

    
Playing input.flv.
    
libavformat file format detected.
    
[flv @ 0x1202460]Estimating duration from bitrate, this may be inaccurate
    
[lavf] stream 0: video (vp6f), -vid 0
    
[lavf] stream 1: audio (nellymoser), -aid 0
    
VIDEO:  [VP6F]  1680x992  0bpp  1000.000 fps   33.4 kbps ( 4.1 kbyte/s)
    
Clip info:
    
 audiocodecid: 6
    
 audiodatarate: 86
    
 audiosamplerate: 44100
    
 audiosamplesize: 16
    
 audiosize: 6097005
    
 canSeekToEnd: true
    
 datasize: 8609138
    
 duration: 567
    
 framerate: 2
    
 hasAudio: true
    
 hasCuePoints: false
    
 hasKeyframes: true
    
 hasMetadata: true
    
 hasVideo: true
    
 height: 992
    
 lasttimestamp: 567
    
 metadatacreator: flvtool++ (Facebook, Motion project, dweatherford)
    
 stereo: false
    
 totalframes: 1043
    
 videocodecid: 4
    
 videodatarate: 33
    
 videosize: 2316256
    
 width: 1680
    
Using (default) progressive frame mode.Opening video filter: [expand w=640 h=480]
    
Expand: 640 x 480, -1 ; -1, osd: 0, aspect: 0.000000, round: 1
    
Opening video filter: [scale w=0 h=0]
    
Opening video filter: [dsize=640:480:0]
    
==========================================================================
    
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
    
Selected video codec: [ffvp6f] vfm: ffmpeg (FFmpeg VP6 Flash)
    
==========================================================================
    
Audio: no sound
    
Starting playback...
    
Movie-Aspect is undefined - no prescaling applied.
    
[swscaler @ 0x7f0c738b9620]Lanczos scaler, from yuv420p to yuv420p using MMX2
    
VO: [yuv4mpeg] 640x480 => 641x480 Planar YV12

    I have also tried specifying FPS, but no change in results

    user@server:/tmp# mplayer -nosound -fps 25-benchmark -sws 9 -vf dsize=640:480:0,scale=0:0,expand=640:480 -vo yuv4mpeg:file=>(x264 --demuxer y4m --fps 25 --crf 0 --preset slow --threads auto --output output.264 - 2>x264.log) 'input.flv'

    Can someone tell me how to either :

    1. fix my split A/V processing/timing/duration issues ?
    2. improve the
      quality of the FFMPEG conversion of FLV to iphone3 compatible
      format ?

  • How to save srt file with a video to be part of the video ?

    14 septembre 2023, par abdallah mostafa

    I've an application that generate srt file for a video with AI but I want to save the video to user's storage with the srt subtitle burned on the video not just embedded.

    


    this is the response form the API

    


    "fotmated_subtitle": [
        {
            "display_text": "You know those cat are memes that everybody uses in their videos and the TV movie clips that people use.",
            "interval": [
                "0:00:00.000",
                "0:00:04.000"
            ]
        },
        {
            "display_text": "Well, who are the four best free websites to find a move?",
            "interval": [
                "0:00:04.000",
                "0:00:06.240"
            ]
        }
    ]


    


    I could add this as a widget over the video that would change accourding to intervals.
I want to know How to save that video with the subtitle

    


     Future<void> saveSubtitle() async {&#xA;    emit(ExportSubtitleLoading());&#xA;    String subtitleFilter = "";&#xA;    for (var subtitle in subtitles!.fotmatedSubtitle!) {&#xA;      String startTime = subtitle.interval![0];&#xA;      String endTime = subtitle.interval![1];&#xA;      String text = subtitle.displayText!;&#xA;      subtitleFilter &#x2B;=&#xA;          "drawtext=text=&#x27;$text&#x27;:enable=&#x27;between(t,$startTime,$endTime)&#x27;:x=(w-text_w)/2:y=h-30:fontsize=24:fontcolor=white,";&#xA;    }&#xA;&#xA;    final dir = await getTemporaryDirectory();&#xA;    String outputPath = &#x27;${dir.path}/ex_vid.mp4&#x27;;&#xA;    final arguments = [&#xA;      &#x27;-i&#x27;,&#xA;      inputFile,&#xA;      &#x27;-vf&#x27;,&#xA;      subtitleFilter,&#xA;      &#x27;-c:v&#x27;,&#xA;      &#x27;libx264&#x27;,&#xA;      &#x27;-c:a&#x27;,&#xA;      &#x27;copy&#x27;,&#xA;      outputPath&#xA;    ];&#xA;    (arguments.join(&#x27; &#x27;)).logger;&#xA;    &#x27;==============&#x27;.logger;&#xA;    await FFmpegKit.execute(arguments.join(&#x27; &#x27;)).then((session) async {&#xA;      final returnCode = await session.getReturnCode();&#xA;&#xA;      if (ReturnCode.isSuccess(returnCode)) {&#xA;        (&#x27;The Converstion is Success&#x27;).logger;&#xA;        emit(ExportSubtitleSuccess());&#xA;      } else if (ReturnCode.isCancel(returnCode)) {&#xA;        // CANCEL&#xA;        (&#x27;The Converstion is Cancelled&#x27;).logger;&#xA;      } else {&#xA;        emit(ExportSubtitleerror());&#xA;        (&#x27;The Converstion Have an Error&#x27;).logger;&#xA;      }&#xA;    });&#xA;  }&#xA;</void>

    &#xA;

    I've tested this method but still does not worked

    &#xA;

    here is the full command

    &#xA;

        String command =&#xA;        "-y -i /data/user/0/com.amaa.aistudio/cache/file_picker/Blink-96bdc94a-17df-4f64-b560-90811a44c4f8-Original.mp4 -vf \"drawtext=text=&#x27;You know those cat are memes that everybody uses in their videos and the TV movie clips that people use.&#x27;:enable=&#x27;between(t,0,4.000)&#x27;:x=(w-text_w)/2:y=h-30:fontsize=24:fontcolor=white,drawtext=text=&#x27;Well, who are the four best free websites to find a move?&#x27;:enable=&#x27;between(t,4.000,6.240)&#x27;:x=(w-text_w)/2:y=h-30:fontsize=24:fontcolor=white\" -c:v libx264 -c:a copy /data/user/0/com.amaa.aistudio/cache/ex_vid.mp4";&#xA;

    &#xA;

    also here is the logs

    &#xA;

     FFmpegKit log message: isom&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:     minor_version   :&#xA;[log] FFmpegKit log message: 512&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:     compatible_brands:&#xA;[log] FFmpegKit log message: isomiso2avc1mp41&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:     comment         :&#xA;[log] FFmpegKit log message: vid:v0f044gc0000cj6mnmrc77u1oq5pn100&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:     aigc_info       :&#xA;[log] FFmpegKit log message: {"aigc_label_type": 0}&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:     encoder         :&#xA;[log] FFmpegKit log message: Lavf58.76.100&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:   Duration:&#xA;[log] FFmpegKit log message: 00:00:35.66&#xA;[log] FFmpegKit log message: , start:&#xA;[log] FFmpegKit log message: 0.000000&#xA;[log] FFmpegKit log message: , bitrate:&#xA;[log] FFmpegKit log message: 1239 kb/s&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:   Stream #0:0&#xA;[log] FFmpegKit log message: [0x1]&#xA;[log] FFmpegKit log message: (und)&#xA;[log] FFmpegKit log message: : Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 576x1024 [SAR 1:1 DAR 9:16], 1102 kb/s&#xA;[log] FFmpegKit log message: ,&#xA;[log] FFmpegKit log message: 47.78 fps,&#xA;[log] FFmpegKit log message: 50 tbr,&#xA;[log] FFmpegKit log message: 12800 tbn&#xA;[log] FFmpegKit log message:  (default)&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:     Metadata:&#xA;[log] FFmpegKit log message:       handler_name    :&#xA;[log] FFmpegKit log message: VideoHandler&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:       vendor_id       :&#xA;[log] FFmpegKit log message: [0][0][0][0]&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:   Stream #0:1&#xA;[log] FFmpegKit log message: [0x2]&#xA;[log] FFmpegKit log message: (und)&#xA;[log] FFmpegKit log message: : Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s&#xA;[log] FFmpegKit log message:  (default)&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:     Metadata:&#xA;[log] FFmpegKit log message:       handler_name    :&#xA;[log] FFmpegKit log message: SoundHandler&#xA;[log] FFmpegKit log message:&#xA;[log] FFmpegKit log message:       vendor_id       :&#xA;[log] FFmpegKit log message: [0][0][0][0]&#xA;[log] FFmpegKit log message:&#xA;FFmpegKit log message: [Parsed_drawtext_0 @ 0xb4000077140d5380] Cannot find a valid font for the family Sans&#xA;[log] FFmpegKit log message: [AVFilterGraph @ 0xb4000077a5e0afe0] Error initializing filters&#xA;[log] FFmpegKit log message: Error reinitializing filters!&#xA;[log] FFmpegKit log message: Failed to inject frame into filter network: No such file or directory&#xA;[log] FFmpegKit log message: Error while processing the decoded data for stream #0:0&#xA;[log] FFmpegKit log message: Conversion failed!&#xA;

    &#xA;

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