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Autres articles (42)
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Publier sur MédiaSpip
13 juin 2013Puis-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 -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)
Sur d’autres sites (5096)
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video overwriting using ffmpeg - I want to Add video rotation code and rewrite the existing file..How can i do that ?
27 octobre 2013, par Lakshmi Priya.KI want to rotate the .mov file which is in portrait mode by 90 degrees, for that i used the following code..
It works but, it results in loss of video frames...My code is,
public void encode(File source, File target, EncodingAttributes attributes,
EncoderProgressListener listener, Integer i) throws IllegalArgumentException,
InputFormatException, EncoderException {
String formatAttribute = attributes.getFormat();
Float offsetAttribute = attributes.getOffset();
Float durationAttribute = attributes.getDuration();
QualityScale qualityScale = attributes.getQualityScale();
AudioAttributes audioAttributes = attributes.getAudioAttributes();
VideoAttributes videoAttributes = attributes.getVideoAttributes();
if (audioAttributes == null && videoAttributes == null) {
throw new IllegalArgumentException(
"Both audio and video attributes are null");
}
target = target.getAbsoluteFile();
target.getParentFile().mkdirs();
FFMPEGExecutor ffmpeg = locator.createExecutor();
if (offsetAttribute != null) {
ffmpeg.addArgument("-ss");
ffmpeg.addArgument(String.valueOf(offsetAttribute.floatValue()));
}
ffmpeg.addArgument("-i");
ffmpeg.addArgument(source.getAbsolutePath());
if (durationAttribute != null) {
ffmpeg.addArgument("-t");
ffmpeg.addArgument(String.valueOf(durationAttribute.floatValue()));
}
if (qualityScale != null) {
ffmpeg.addArgument("-qscale:"+qualityScale.getQualityStreamSpecifier());
ffmpeg.addArgument(String.valueOf(qualityScale.getQualityValue()));
}
if (videoAttributes == null) {
ffmpeg.addArgument("-vn");
} else {
String codec = videoAttributes.getCodec();
if (codec != null) {
ffmpeg.addArgument("-vcodec");
ffmpeg.addArgument(codec);
}
String tag = videoAttributes.getTag();
if (tag != null) {
ffmpeg.addArgument("-vtag");
ffmpeg.addArgument(tag);
}
Integer bitRate = videoAttributes.getBitRate();
if (bitRate != null) {
ffmpeg.addArgument("-b");
ffmpeg.addArgument(String.valueOf(bitRate.intValue()));
}
Integer frameRate = videoAttributes.getFrameRate();
if (frameRate != null) {
ffmpeg.addArgument("-r");
ffmpeg.addArgument(String.valueOf(frameRate.intValue()));
}
VideoSize size = videoAttributes.getSize();
if (size != null) {
ffmpeg.addArgument("-s");
ffmpeg.addArgument(String.valueOf(size.getWidth()) + "x"
+ String.valueOf(size.getHeight()));
}
FilterGraph filterGraph = videoAttributes.getFilterGraph();
if (filterGraph != null) {
ffmpeg.addArgument("-vf");
if(videoAttributes.getRotate() != null && videoAttributes.getRotate() == 90){
ffmpeg.addArgument("transpose=1");
}else if(videoAttributes.getRotate() != null && videoAttributes.getRotate() == 180){
ffmpeg.addArgument("vflip,hflip");
}
else {
if (filterGraph.isUseExpression()) {
ffmpeg.addArgument(filterGraph.getFilterGraphExpression());
}
}
}
}
if (audioAttributes == null) {
ffmpeg.addArgument("-an");
} else {
String codec = audioAttributes.getCodec();
if (codec != null) {
ffmpeg.addArgument("-acodec");
ffmpeg.addArgument(codec);
}
Integer bitRate = audioAttributes.getBitRate();
if (bitRate != null) {
ffmpeg.addArgument("-ab");
ffmpeg.addArgument(String.valueOf(bitRate.intValue()));
}
Integer channels = audioAttributes.getChannels();
if (channels != null) {
ffmpeg.addArgument("-ac");
ffmpeg.addArgument(String.valueOf(channels.intValue()));
}
Integer samplingRate = audioAttributes.getSamplingRate();
if (samplingRate != null) {
ffmpeg.addArgument("-ar");
ffmpeg.addArgument(String.valueOf(samplingRate.intValue()));
}
Integer volume = audioAttributes.getVolume();
if (volume != null) {
ffmpeg.addArgument("-vol");
ffmpeg.addArgument(String.valueOf(volume.intValue()));
}
}
ffmpeg.addArgument("-f");
ffmpeg.addArgument(formatAttribute);
ffmpeg.addArgument("-y");
ffmpeg.addArgument(target.getAbsolutePath());
try {
ffmpeg.execute();
} catch (IOException e) {
throw new EncoderException(e);
}
try {
String lastWarning = null;
long duration;
long progress = 0;
RBufferedReader reader = null;
reader = new RBufferedReader(new InputStreamReader(ffmpeg
.getErrorStream()));
MultimediaInfo info = parseMultimediaInfo(source, reader);
if (durationAttribute != null) {
duration = (long) Math
.round((durationAttribute.floatValue() * 1000L));
} else {
duration = info.getDuration();
if (offsetAttribute != null) {
duration -= (long) Math
.round((offsetAttribute.floatValue() * 1000L));
}
}
if (listener != null) {
listener.sourceInfo(info);
}
int step = 0;
String line;
while ((line = reader.readLine()) != null) {
System.out.println("line::::"+line);
if (step == 0) {
if (line.startsWith("WARNING: ")) {
if (listener != null) {
listener.message(line);
}
} else if (!line.startsWith("Output #0")) {
//throw new EncoderException(line);
} else {
step++;
}
} else if (step == 1) {
if (!line.startsWith(" ")) {
step++;
} else {
System.out.println("line>>>>>>"+line);
Hashtable table1 = new Hashtable();
Matcher m = ROTATE_INFO_PATTERN.matcher(line);
while (m.find()) {
if (table1 == null) {
table1 = new Hashtable();
}
String key = m.group(1);
String value = m.group(2);
table1.put(key, value);
}
System.out.println("Table values"+table1.get("rotate"));
if(table1.get("rotate") != null){
Object videoRotateValue = table1.get("rotate");
int rotate = Integer.valueOf(videoRotateValue.toString());
switch(rotate){
case 90:
videoAttributes.setRotate(rotate);
if(i == 0){
i++;
encode(source, target, attributes, null, i);
}
break;
case 180:
videoAttributes.setRotate(rotate);
if(i == 0){
i++;
encode(source, target, attributes, null, i);
}
break;
case 270: System.out.println("case 3 :: "+videoRotateValue);
break;
}
}
}
}
if (step == 2) {
if (!line.startsWith("Stream mapping:")) {
throw new EncoderException(line);
} else {
step++;
}
} else if (step == 3) {
if (!line.startsWith(" ")) {
step++;
}
}
if (step == 4) {
line = line.trim();
if (line.length() > 0) {
Hashtable table = parseProgressInfoLine(line);
if (table == null) {
if (listener != null) {
listener.message(line);
}
lastWarning = line;
} else {
if (listener != null) {
String time = (String) table.get("time");
if (time != null) {
int dot = time.indexOf('.');
if (dot > 0 && dot == time.length() - 2
&& duration > 0) {
String p1 = time.substring(0, dot);
String p2 = time.substring(dot + 1);
try {
long i1 = Long.parseLong(p1);
long i2 = Long.parseLong(p2);
progress = (i1 * 1000L)
+ (i2 * 100L);
int perm = (int) Math
.round((double) (progress * 1000L)
/ (double) duration);
if (perm > 1000) {
perm = 1000;
}
listener.progress(perm);
} catch (NumberFormatException e) {
;
}
}
}
}
lastWarning = null;
}
}
}
}
if (lastWarning != null) {
if (!SUCCESS_PATTERN.matcher(lastWarning).matches()) {
throw new EncoderException(lastWarning);
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
ffmpeg.destroy();
}
}Please advise, how to achieve video rotation without any video Frame loss
Thanks In Advance
Lakshmi Priya . K
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Piwik 1.12, New Features, API Improvements, Stability — The Last Piwik 1.X Release
30 mai 2013, par Piwik team — DevelopmentWe are very excited to announce the immediate availability of Piwik v1.12 !
- Download Link
- How to update Piwik ?
- List of all tickets closed : Changelog
Piwik v1.12 is a major new release with four big new features, seven smaller new features, several API improvements and all together 82 tickets fixed. This is also the last major 1.X release, which means after this release we will be working on releasing Piwik 2.0. This also means that you should upgrade to PHP 5.3 or higher if you haven’t already, since Piwik 2.0 will only support PHP 5.3 and above.
Finally, this release contains two breaking changes to the API. If you use the Piwik API click here or scroll down to see if you’re affected.
Table of Contents :
New Big Feature – Beta Release Channel
For those of you who want to help test Piwik 2.0-beta releases as soon as they come up, we’ve made it easier to use our beta releases. Navigate to the Settings > General Settings page and click the The latest beta release radio button. You will then be able to upgrade to beta releases.
This isn’t truly a major feature, but we think it’s just as important because it will allow us to create more beta releases and thus catch more bugs before we make a final release. This means more releases and more stability for you.
New Big Feature – Segment Editor
The Segment Editor is a long-awaited new feature that allows you to view, save and edit your segments.
Piwik has supported segmentation (filtering visits and reports by arbitrary criteria, like browser family) for quite some time now, but it has never been possible to visually create and modify them. Nor could they be saved for later recall.
Thanks to the eighty individuals and company who funded this feature, it is now possible to :
- visually segment your visitors, instead of creating URLs.
- save segments and easily switch between them, instead of remembering URLs.
- get suggestions for segments that might be helpful to view.
- learn more in the Segmentating Analytics reports user documentation..
New Big Feature – Page Speed Reports
You can now see how long it took your webserver to generate and send pages over HTTP through the new Avg. Generation Time metric.
This metric can be viewed on both the Pages and Page Titles reports :
And the average page generation time for all the pages in your website/webapp is displayed on the visitors overview :
You can use this new information to benchmark your webapp and web server.
New Big Feature – Device Detection Reports
Piwik 1.12 also includes a new plugin that provides reports on the device types (tablet, desktop, smartphone, etc.), device brands (Apple, Google, Samsung, etc.) and device models (iPad, Nexus 7, etc.) your visitors use to access your website :
The new plugin also enhances Operating system detections (detecting sub versions of Linux, Windows, and more).
Note : This plugin is not enabled by default, but will be in Piwik 2.0. If you want to view these reports now, you can activate the plugin in the Installed Plugins admin page. Navigate to Visitors > Devices to see the new reports. You may also use the new (beta) ‘Device type’.
The new plugin was developed with the support of Clearcode.cc our technology partner
Other improvements
Majestic SEO Metrics
We’ve added two new SEO metrics to the SEO widget, both of which are calculated by MajesticSEO.com. These metrics will tell you the number of external backlinks (the number of links to your site from other sites) and the number of referrer domains (the number of domains that link to your site).
We thank the team at Majestic for their support and hard work in bringing you these metrics to your Piwik dashboards !
Real-time Visitor Count Dashboard Widget
There is now a simple new widget you can use to see the number of visitors, visits and actions that occurred in the last couple minutes. We call it the Real Time Visitor Counter !
New segment parameter : siteSearchKeyword.
There is now a new segment parameter you can use to segment your visits : siteSearchKeyword. This parameter will let you select visits that had site searches with a specific keyword.
Ignore URL letter case when importing log files.
We’ve added a new option to the log import script, –force-lowercase-path. When used, the importer will change URL paths to lowercase before tracking them. This way http://domain.com/MY/BLOG will be treated the same as http://domain.com/my/blog.
Updated ISP Names
We’ve also modified the Providers report so prettier and more up-to-date names of ISPs are displayed.
Customize the background/text/axis color of graphs.
It is now possible to change the background color, text color and/or axis color of the graph images generated by the ImageGraph plugin. To access this functionality, use the following URL query parameters when generating an image :
- backgroundColor
- textColor
- axisColor
For example :
http://demo.piwik.org/index.php?module=API&method=ImageGraph.get&idSite=7&apiModule=UserSettings&apiAction=getBrowser&token_auth=anonymous&period=day&date=2013-03-21,2013-04-19&language=en&width=779&height=150&fontSize=9&showMetricTitle=0&aliasedGraph=1&legendAppendMetric=0&backgroundColor=efefef&gridColor=dcdcdc&colors=cb2026Send your users to a custom URL after they logout.
If you manage a Piwik installation with many users and you want to send them to a custom page or website after they log out of Piwik, you can now specify the URL to redirect users after they log out.
API Changes and Improvements
BREAKING CHANGE – renamed segment parameters.
The following segment parameters have been renamed :
- continent renamed to : continentCode
- browserName renamed to : browserCode
- operatingSystem renamed to : operatingSystemCode
- lat renamed to : latitude
- long renamed to : longitude
- region renamed to : regionCode
- country renamed to : countryCode
- continent renamed to : continentCode
If you use one of the old segment parameter names, Piwik will throw an exception, so you should notice when you’re using an old name.
BREAKING CHANGE – changes to the input & output of the Live.getLastVisitsDetails method.
The following changes were made to the Live.getLastVisitsDetails API method :
- The method no longer uses the maxIdVisit query parameter. It has been replaced by the filter_offset parameter.
- Site search keywords are now displayed in a <siteSearchKeyword> element. They were formerly in <pageTitle> elements.
- Custom variables with page scope now have ‘Page’ in their element names when displayed. For example, <customVariablePageName1>, <customVariablePageName2>, etc.
Filter results of MultiSites.getAll by website name.
It is now possible to filter the results of MultiSites.getAll by website name. To do this, set the pattern query parameter to the desired regex pattern.
Get suggested values to use for a segment parameter.
The new API method API.getSuggestedValuesForSegment can now be used to get suggested values for a segment parameter. This method will return a list of the most seen values (in the last 60 days) for a certain segment parameter. So for browserCode, this would return the codes for the browsers most visitors used in the last 60 days.
Use extra tracking query parameters with the JS tracker (such as ‘lat’ & ‘long’).
We’ve added a new method to the JavaScript tracker named appendToTrackingUrl. You can use this method to add extra query parameters to a tracking request, like so :
_paq.push(['appendToTrackingUrl', 'lat=X&long=Y']);What we’re working on
As we said above, Piwik v1.12 is the last in the 1.X series of releases. This means we are now officially working on Piwik 2.0.
Piwik 2.0 will be a big release, to be sure, but it’s going to bring you more than just a couple new features and a bag of bug fixes. For Piwik 2.0 we will be revisiting the user needs and the ideals that originally prompted us to create Piwik in order to build our vision of the future of web analytics.
Piwik 2.0 won’t just be a bigger, better web app, but a new platform for observing and analyzing the things that matter to you.
Participate in Piwik
Are you a talented developer or an experienced User Interface designer ? Or maybe you like to write documentation or are a marketing guru ?
If you have some free time and if you want to contribute to one of the most awesome open source projects around, please get in touch with the Piwik team, or read this page to learn more…
Summary
For the full list of changes in Piwik 1.12 check out the Changelog.
Thank you to the core developers, all the beta testers and users, our official supporters, the translators & everyone who reported bugs or feature requests. Also thank you to softwares we use, and the libraries we use.
If you are a company and would like to help an important project like Piwik grow, please get in touch, it means a lot to us. You can also participate in the project —
–> if you like what you read, please tell your friends and colleagues or write on your website, blog, forums, stackoverflow, etc. <–
Peace. Enjoy !
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Determine if OpenCV has FFMpeg Support at Configuration Time
17 février 2014, par archgoonI'm building my project with CMake, but I want to throw an error if OPENCV has not been compiled with FFMPEG support (as this will prevent a large amount of functinoality of my application). How can I modify my CMake scripts to check for this ?
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