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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (13)
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Installation en mode ferme
4 février 2011, parLe mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
C’est la méthode que nous utilisons sur cette même plateforme.
L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...) -
Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...) -
La gestion des forums
3 novembre 2011, parSi les forums sont activés sur le site, les administrateurs ont la possibilité de les gérer depuis l’interface d’administration ou depuis l’article même dans le bloc de modification de l’article qui se trouve dans la navigation de la page.
Accès à l’interface de modération des messages
Lorsqu’il est identifié sur le site, l’administrateur peut procéder de deux manières pour gérer les forums.
S’il souhaite modifier (modérer, déclarer comme SPAM un message) les forums d’un article particulier, il a à sa (...)
Sur d’autres sites (3345)
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Watch My Hero Academia Heroes Rising Full Movie Online FREE #2019
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Title : My Hero Academia : Heroes Rising
Release : 2019-12-20
Runtime : 104 min
Genre : Animation, Action
Stars : Daiki Yamashita, Nobuhiko Okamoto, Kenta Miyake, Ayane Sakura, Aoi Yuki, Yuki Kaji


Overview : Class 1-A visits Nabu Island where they finally get to do some real hero work. The place is so peaceful that it's more like a vacation … until they're attacked by a villain with an unfathomable Quirk ! His power is eerily familiar, and it looks like Shigaraki had a hand in the plan. But with All Might retired and citizens' lives on the line, there's no time for questions. Deku and his friends are the next generation of heroes, and they're the island's only hope.


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Accord.Video.FFMpeg : Problem of duration difference between recording time and video time
5 mars 2020, par ckrbyI want to save the footage I get from the webcam as a video in webM (Vp8) format. I use the Accord library. But when recording, there is almost 2-3 times the difference between the time spent and the video time. The code I use and some debug outputs are below.
Accord.Video.FFMpeg 3.8.2-Alpha (double pts/dts bug fixed version)
Video Save Format : VP8 (.WebM)Record Start Settings :
videoCodec = VideoCodec.Vp8;
bitrate : 1250000
framerate :10
height :720
width: 1280
videoSource.VideoResolution: 1280x720, 30 fps (30 max fps), 24 bpp
FileWriter.BitRate = bitRate;
FileWriter.FrameRate = new Accord.Math.Rational((int)framerate );
FileWriter.Width = width;
FileWriter.Height = height;
FileWriter.VideoCodec = videoCodec;
FileWriter.Open(FileName);
_recording = true;
StartTimeStamp = DateTime.Now;newFrame Event
private void VideoSourcePlayer1_NewFrame(object sender, ref Bitmap image)
{
if (_recording)
{
try
{
Bitmap CurrentBitmap = image;
DateTime CurrentTimeStamp = DateTime.Now;
TimeSpan CurrentTimeSpan = StartTimeStamp - CurrentTimeStamp;
Console.WriteLine("Video Write Timespan: " + CurrentTimeSpan.ToString());
FileWriter.WriteVideoFrame(CurrentBitmap, CurrentTimeSpan);
// FileWriter.WriteVideoFrame(image);
}
catch (Exception ex)
{
Console.WriteLine("VideoSourcePlayer1_NewFrame catch: " + ex.Message);
}
}
}Note : It is the same issue with timespan or without timespan writing.
In the 122 second (02.02 min) period, 50 seconds of video recording is created. I couldn’t solve it.
Little Part of the debug output :
Video Write Timespan : -00:01:55.4107365
pts:4,730000e+004 pts_time:47,3 dts:4,730000e+004 dts_time:47,3 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:01:55.6136263
pts:4,740000e+004 pts_time:47,4 dts:4,740000e+004 dts_time:47,4 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:01:55.8354960
pts:4,750000e+004 pts_time:47,5 dts:4,750000e+004 dts_time:47,5 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:01:56.5161088
pts:4,760000e+004 pts_time:47,6 dts:4,760000e+004 dts_time:47,6 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:01:56.7309841
pts:4,770000e+004 pts_time:47,7 dts:4,770000e+004 dts_time:47,7 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:01:56.9758413
pts:4,780000e+004 pts_time:47,8 dts:4,780000e+004 dts_time:47,8 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:01:57.1947200
pts:4,790000e+004 pts_time:47,9 dts:4,790000e+004 dts_time:47,9 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:01:57.4375834
pts:4,800000e+004 pts_time:48 dts:4,800000e+004 dts_time:48 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:01:57.5804983The last two outputs :
Video Write Timespan : -00:02:02.7505463
pts:5,000000e+004 pts_time : 50 dts:5,000000e+004 dts_time : 50 duration:1,000000e+002 duration_time:0,1
Video Write Timespan : -00:02:02.9884038
pts:5,010000e+004 pts_time : 50,1 dts:5,010000e+004 dts_time : 50,1 duration:1,000000e+002 duration_time:0,1Why is there a difference between timespan and dts/pts time ? Could the problem be due to this ?
Note : When I set the framerate to 30 ; Another process 95 seconds (1.35 min) recording time is 16 seconds in the video.
As the frame rate increases, the length of the video gets shorter and
shorter than the actual value it should be.Output :
Video Write Timespan : -00:01:35.1086178
pts:1,606700e+004 pts_time : 16,067 dts:1,606700e+004 dts_time : 16,067 duration:3,300000e+001 duration_time:0,033
Video Write Timespan : -00:01:35.2565302
pts:1,610000e+004 pts_time : 16,1 dts:1,610000e+004 dts_time : 16,1 duration:3,300000e+001 duration_time:0,033
Video Write Timespan : -00:01:35.3984494
pts:1,613300e+004 pts_time : 16,133 dts:1,613300e+004 dts_time : 16,133 duration:3,300000e+001 duration_time:0,033So the video duration is like dts_time. Why is the video duration not
value of timespan time, I still can’t find it ??Soory for my bad english & expression,
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Accord.Video.FFMPEG creates very low quality video
11 février 2021, par Кирилл МалышевI use
Accord.Video.FFMPEG
to create a video of 200 images with the H264 codec. For some reason, the video is very poor quality. Its size is less than 1MB. When choosingVideoCodec.Raw
, the quality is high, but I am not happy with the huge size.


I do something like this



using (var vFWriter = new VideoFileWriter())
{
 vFWriter.Open(video_name, 1920, 1080, 24, VideoCodec.H264);
 for (int i = 0; i < 200; ++i)
 {
 var img_name_src = ...
 using (Bitmap src_jpg = new Bitmap(img_name_src))
 {
 vFWriter.WriteVideoFrame(src_jpg);
 }
 }
 vFWriter.Close();
}




When I run the program, messages appear :



[swscaler @ 06c36d20] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 06e837a0] deprecated pixel format used, make sure you did set range correctly
[avi @ 06c43980] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
[avi @ 06c43980] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.




I don’t know if they affect something.



It looks like 1 frame :






This is the frame from the video :






How to fix it ?



Is there any other way in C# to create a video from individual frames ?