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  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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.
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  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
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Sur d’autres sites (6529)

  • Compressing videos from a smartphone

    9 novembre 2016, par fejesjoco

    I have a Nexus 6p with the stock camera. It’s set to record at 1080p, 30fps. Here’s a 5 second sample (11 MB).

    Videos from this phone come out at about 17 Mbps on average. I tried to compress it with ffmpeg with -c:v libx264 -crf 23 -preset veryslow, the result comes out at about 5.5 MB, which is about 9 Mbps.

    I think this bitrate is a bit too much. When I look at torrent file listings, I can see high quality videos at 3 GB in size on average, and if such a movie is 90 minutes long on average, that is about 4-5 Mbps which sounds okay.

    I’m wondering, why the big difference ? I can notice that my video is noisy/grainy (which is expected from a phone), and that might reduce compressibility. I tried a few ffmpeg filters, like hqdn3d and atadenoise, but the noise mostly remained (maybe I didn’t play with it enough). Then I figured, the video is also shaky (which is also expected), and that might reduce compressibility too (and even makes temporal noise filtering less effective). I tried to stabilize it with the deshake filter, but that didn’t help either.

    I know I could just limit the bandwidth to whatever I like, but there must be a reason why ffmpeg thinks it needs a high bandwidth to maintain a certain quality, and a lower bandwidth would just decrease the quality.

    Why do these videos have such a high bitrate ? What’s the best way to compress them more while keeping or even increasing their quality ?

  • Compressing videos from a smartphone

    21 septembre 2019, par fejesjoco

    I have a Nexus 6p with the stock camera. It’s set to record at 1080p, 30fps. Here’s a 5 second sample (11 MB).

    Videos from this phone come out at about 17 Mbps on average. I tried to compress it with ffmpeg with -c:v libx264 -crf 23 -preset veryslow, the result comes out at about 5.5 MB, which is about 9 Mbps.

    I think this bitrate is a bit too much. When I look at torrent file listings, I can see high quality videos at 3 GB in size on average, and if such a movie is 90 minutes long on average, that is about 4-5 Mbps which sounds okay.

    I’m wondering, why the big difference ? I can notice that my video is noisy/grainy (which is expected from a phone), and that might reduce compressibility. I tried a few ffmpeg filters, like hqdn3d and atadenoise, but the noise mostly remained (maybe I didn’t play with it enough). Then I figured, the video is also shaky (which is also expected), and that might reduce compressibility too (and even makes temporal noise filtering less effective). I tried to stabilize it with the deshake filter, but that didn’t help either.

    I know I could just limit the bandwidth to whatever I like, but there must be a reason why ffmpeg thinks it needs a high bandwidth to maintain a certain quality, and a lower bandwidth would just decrease the quality.

    Why do these videos have such a high bitrate ? What’s the best way to compress them more while keeping or even increasing their quality ?

  • Reddit api only giving video and not its audio

    25 mars 2023, par Rudra Sharma

    I am using Reddit API to play videos on my app but the audio is not playing with the video.

    


    This is my code. I am using chewie package and I have no idea if the problem is in the player or Reddit Api. Also I am new to flutter. The code plays reddit videos on my app on chewie video player.

    


      Future<void> _loadVideos() async {&#xA;    try {&#xA;      final videoUrls =&#xA;          await RedditApi.getVideoUrlsFromSubreddit(&#x27;IndianDankMemes&#x27;);&#xA;&#xA;      setState(() {&#xA;        _videoUrls.addAll(videoUrls);&#xA;      });&#xA;    } catch (e) {&#xA;      print(e);&#xA;    }&#xA;  }&#xA;&#xA;  Widget _buildVideosList() {&#xA;    return ListView.builder(&#xA;      itemCount: _videoUrls.length,&#xA;      itemBuilder: (context, index) {&#xA;        return Padding(&#xA;          padding: const EdgeInsets.all(8.0),&#xA;          child: Chewie(&#xA;            controller: ChewieController(&#xA;              videoPlayerController: VideoPlayerController.network(&#xA;                _videoUrls[index],&#xA;              ),&#xA;              aspectRatio: 9 / 16,&#xA;              autoPlay: true,&#xA;              looping: true,&#xA;              autoInitialize: true,&#xA;            ),&#xA;          ),&#xA;        );&#xA;      },&#xA;    );&#xA;  }&#xA;}&#xA;&#xA;class RedditApi {&#xA;  static const String BASE_URL = &#x27;https://www.reddit.com&#x27;;&#xA;  static const String CLIENT_ID = &#x27;my client id&#x27;;&#xA;  static const String CLIENT_SECRET = &#x27;my client secret&#x27;;&#xA;&#xA;  static Future> getVideoUrlsFromSubreddit(&#xA;      String subredditName) async {&#xA;    final response = await http.get(&#xA;        Uri.parse(&#x27;$BASE_URL/r/$subredditName/top.json?limit=10&#x27;),&#xA;        headers: {&#x27;Authorization&#x27;: &#x27;Client-ID $CLIENT_ID&#x27;});&#xA;&#xA;    if (response.statusCode == 200) {&#xA;      final jsonData = jsonDecode(response.body);&#xA;      final postsData = jsonData[&#x27;data&#x27;][&#x27;children&#x27;];&#xA;&#xA;      final videoUrls = <string>[];&#xA;&#xA;      for (var postData in postsData) {&#xA;        if (postData[&#x27;data&#x27;][&#x27;is_video&#x27;]) {&#xA;          videoUrls.add(postData[&#x27;data&#x27;][&#x27;media&#x27;][&#x27;reddit_video&#x27;]&#xA;              [&#x27;fallback_url&#x27;]);&#xA;        }&#xA;      }&#xA;&#xA;      return videoUrls;&#xA;    } else {&#xA;      throw Exception("Failed to load videos from subreddit");&#xA;    }&#xA;  }&#xA;}```&#xA;&#xA;If you are suggesting for ffmpeg please give me code as well as I said I am new to flutter. &#xA;&#xA;I have checked my client id and client secret is correct as well. Also if there is any other package I can add to make the task easy.&#xA;&#xA;</string></void>

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