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Autres articles (58)
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Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users. -
Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
MediaSPIP Player : problèmes potentiels
22 février 2011, parLe lecteur ne fonctionne pas sur Internet Explorer
Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)
Sur d’autres sites (12551)
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Google Analytics 4 (GA4) vs Universal Analytics (UA)
24 janvier 2022, par Erin — Analytics TipsMarch 2022 Update : It’s official ! Google announced that Universal Analytics will no longer process any new data as of 1 July 2023. Google is now pushing Universal Analytics users to switch to the latest version of GA – Google Analytics 4.
Currently, Google Analytics 4 is unable to accept historical data from Universal Analytics. Users need to take action before July 2022, to ensure they have 12 months of data built up before the sunset of Universal Analytics
So how do Universal Analytics and Google Analytics 4 compare ? And what alternative options do you have ? Let’s dive in.
In this blog, we’ll cover :
What is Google Analytics 4 ?
In October 2020, Google launched Google Analytics 4, a completely redesigned analytics platform. This follows on from the previous version known as Universal Analytics (or UA).
Amongst its touted benefits, GA4 promises a completely new way to model data and even the ability to predict future revenue.
However, the reception of GA4 has been largely negative. In fact, some users from the digital marketing community have said that GA4 is awful, unusable and so bad it can bring you to tears.
Gill Andrews via Twitter Google Analytics 4 vs Universal Analytics
There are some pretty big differences between Google Analytics 4 and Universal Analytics but for this blog, we’ll cover the top three.
1. Redesigned user interface (UI)
GA4 features a completely redesigned UI to Universal Analytics’ popular interface. This dramatic change has left many users in confusion and fuelled some users to declare that “most of the time you are going round in circles to find what you’re looking for.”
Mike Huggard via Twitter 2. Event-based tracking
Google Analytics 4 also brings with it a new data model which is purely event-based. This event-based model moves away from the typical “pageview” metric that underpins Universal Analytics.
3. Machine learning insights
Google Analytics 4 promises to “predict the future behavior of your users” with their machine-learning-powered predictive metrics. This feature can “use shared aggregated and anonymous data to improve model quality”. Sounds powerful, right ?
Unfortunately, it only works if at least 1,000 returning users triggered the relevant predictive condition over a seven-day period. Also, if the model isn’t sustained over a “period of time” then it won’t work. And according to Google, if “the model quality for your property falls below the minimum threshold, then Analytics will stop updating the corresponding predictions”.
This means GA4’s machine learning insights probably won’t work for the majority of analytics users.
Ultimately, GA4 is just not ready to replace Google’s Universal Analytics for most users. There are too many missing features.
What’s missing in Google Analytics 4 ?
Quite a lot. Even though it offers a completely new approach to analytics, there are a lot of key features and functions missing in GA4.
Behavior Flow
The Behavior Flow report in Universal Analytics helps to visualise the path users take from one page or Event to the next. It’s extremely useful when you’re looking for quick and clear insight. But it no longer exists in Google Analytics 4, and instead, two new overcomplicated reports have been introduced to replace it – funnel exploration report and path exploration report.
The decision to remove this critical report will leave many users feeling disappointed and frustrated.
Limitations on custom dimensions
You can create custom dimensions in Google Analytics 4 to capture advanced information. For example, if a user reads a blog post you can supplement that data with custom dimensions like author name or blog post length. But, you can only use up to 50, and for some that will make functionality like this almost pointless.
Machine learning (ML) limitations
Google Analytics 4 promises powerful ML insights to predict the likelihood of users converting based on their behaviors. The problem ? You need 1,000 returning users in one week. For most small-medium businesses this just isn’t possible.
And if you do get this level of traffic in a week, there’s another hurdle. According to Google, if “the model quality for your property falls below the minimum threshold, then GA will stop updating the corresponding predictions.” To add insult to injury Google suggests that this might make all ML insights unavailable. But they can’t say for certain…
Views
One cornerstone of Universal Analytics is the ability to configure views. Views allow you to set certain analytics environments for testing or cleaning up data by filtering out internal traffic, for example.
Views are great for quickly and easily filtering data. Preset views that contain just the information you want to see are the ideal analytics setup for smaller businesses, casual users, and do-it-yourself marketing departments.
Via Reddit There are a few workarounds but they’re “messy [,] annoying and clunky,” says a disenfranchised Redditor.
Another helpful Reddit user stumbled upon an unhelpful statement from Google. Google says that they “do not offer [the views] feature in Google Analytics 4 but are planning similar functionality in the future.” There’s no specific date yet though.
Bounce rate
Those that rely on bounce rate to understand their site’s performance will be disappointed to find out that bounce rate is also not available in GA4. Instead, Google is pushing a new metric known as “Engagement Rate”. With this metric, Google now uses their own formula to establish if a visitor is engaged with a site.
Lack of integration
Currently, GA4 isn’t ready to integrate with many core digital marketing tools and doesn’t accept non-Google data imports. This makes it difficult for users to analyse ROI and ROAS for campaigns measured in other tools.
Content Grouping
Yet another key feature that Google has done away with is Content Grouping. However, as with some of the other missing features in GA4, there is a workaround, but it’s not simple for casual users to implement. In order to keep using Content Grouping, you’ll need to create event-scoped custom dimensions.
Annotations
A key feature of Universal Analytics is the ability to add custom Annotations in views. Annotations are useful for marking dates that site changes were made for analysis in the future. However, Google has removed the Annotations feature and offered no alternative or workaround.
Historical data imports are not available
The new approach to data modelling in GA4 adds new functionality that UA can’t match. However, it also means that you can’t import historical UA data into GA4.
Google’s suggestion for this one ? Keep running UA with GA4 and duplicate events for your GA4 property. Now you will have two different implementations running alongside each other and doing slightly different things. Which doesn’t sound like a particularly streamlined solution, and adds another level of complexity.
Should you switch to Google Analytics 4 ?
So the burning question is, should you switch from Universal Analytics to Google Analytics 4 ? It really depends on whether you have the available resources and if you believe this tool is still right for your organisation. At the time of writing, GA4 is not ready for day-to-day use in most organisations.
If you’re a casual user or someone looking for quick, clear insights then you will likely struggle with the switch to GA4. It appears that the new Google Analytics 4 has been designed for enterprise-scale businesses with large internal teams of analysts.
Micah Fisher-Kirshner via Twitter Unfortunately, for most casual users, business owners and do-it-yourself marketers there are complex workarounds and time-consuming implementations to handle. Ultimately, it’s up to you to decide if the effort to migrate and relearn GA is worth it.
Right now is the best time to draw the line and make a decision to either switch to GA4 or look for a better alternative to Google Analytics.
Google Analytics alternative
Matomo is one of the best Google Analytics alternatives offering an easy to use design with enhanced insights on our Cloud, On-Premise and on Matomo for WordPress solutions.
Mark Samber via Twitter Matomo is an open-source analytics solution that provides a comprehensive, user-friendly and compliance-focused alternative to both Google Analytics 4 and Universal Analytics.
The key benefits of using Matomo include :
- Easy to use – Matomo provides a simpler interface and understandable KPIs. See for yourself with our live demo.
- Compliance – Future-proof your tech stack for looming privacy regulations. Matomo covers all of your ePrivacy, GDPR, HIPAA, CCPA, and PECR data compliance requirements.
- Data privacy and ownership – Your analytics data is 100% yours to own, with no external parties looking in.
- Flexible, all-in-one solution – Get features like A/B Testing, Heatmaps, Session Recordings, SEO Web Vitals, Tag Manager, Media Analytics, Search Engine Keyword Performance, custom reports and much more.
- Integrations galore – Expand your Matomo capabilities by adding integrations from over 100 leading technologies.
Plus, unlike GA4, Matomo will accept your historical data from UA so you don’t have to start all over again. Check out our 7 step guide to migrating from Google Analytics to find out how.
Getting started with Matomo is easy. Check out our live demo and start your free 21-day trial. No credit card required.
In addition to the limitations and complexities of GA4, there are many other significant drawbacks to using Google Analytics.
Google’s data ethics are a growing concern of many and it is often discussed in the mainstream media. In addition, GA is not GDPR compliant by default and has resulted in 200k+ data protection cases against websites using GA.
What’s more, the data that Google Analytics actually provides its end-users is extrapolated from samples. GA’s data sampling model means that once you’ve collected a certain amount of data Google Analytics will make educated guesses rather than use up its server space collecting your actual data.
The reasons to switch from Google Analytics are rising each day.
Wrap up
The now required update to GA4 will add new layers of complexity, which will leave many casual web analytics users and marketers wondering if there’s a better way. Luckily there is. Get clear insights quickly and easily with Matomo – start your 21-day free trial now.
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[Aug-Sept 2013] Piwik 2.0 Development Update !
3 octobre 2013, par Fabian Becker — DevelopmentThis Development Update is the first in a new series of posts we’ll be writing to keep you, our loyal users, informed of our efforts. We hope these updates keep you excited about Piwik’s future, and if you’re a developer, we hope they inspire and challenge you to accomplish more yourself !
Despite this being our first update, it will probably be one of our biggest. We’ve gotten a lot done as we race towards the Piwik 2.0 release ! Just see for yourself :
What we’ve accomplished
Theming
Piwik now supports theming, a feature that was requested often in the past. Because of our switch to the Twig template engine and other major code changes it is now possible to change the way Piwik looks. Additionally, developers can use the dynamic stylesheet language LESS, instead of CSS. Piwik will automatically transform the LESS code into CSS.
Piwik 2.0 will ship with a new dark theme called PleineLune (french for Full Moon) that makes use of the new theming feature. Another theme with a left-aligned menu was created during the Piwik Meetup in Paris. Both of these themes were created by Thomas Zilliox, a very talented designer and CSS expert.
PHP 5.3 Namespaces
For Piwik 2.0 we decided to make use of namespaces, a feature introduced in PHP 5.3. The usage of namespaces makes our code more readable and allows us to better modularize the platform. This is in part why we are raising the required minimum PHP version to 5.3 for Piwik 2.0. (Remember to update your server !)
Translations in JSON
All translations are now stored in JSON files which makes storing translations in Piwik a lot cleaner that the giant PHP array we previously used.
Side note : if you’d like to make Piwik available to more languages, please sign up at translations.piwik.org. We’d love to have your help !
UI Tests
We now use UI tests to make sure that changes to the code don’t break the UI. UI tests use PhantomJS and CutyCapt and are automatically executed on Travis CI. Whenever an integration test fails the script produces a screenshot diff that shows the difference. Learn more.
AnonymizeIP supports IPv6
The AnonymizeIP plugin now masks IPv6 addresses. The concept of the config option ‘ip_address_mask_length’ has now changed to reflect the level of masking that should be applied to the IP. With a masking level of 1 Piwik will mask the last octet of an IPv4 address and the last 80 bits of an IPv6 address.
All Websites Dashboard usable with 20,000+ Websites
The All Websites Dashboard is now usable even if you track many thousands of websites in your Piwik instance. We rewrote parts of the archiving process in order to make this possible. Making Piwik fast and memory efficient is a constant concern for core developers.
Plugins can now add new Visualizations
Piwik Plugins and Themes can now create new visualizations for your report data. They can also specify their own ViewDataTable footer icons or modify existing ones. This will allow plugin developers to create new ways for you to view your data, customize existing reports so they look great in new visualizations and provide extra analytics functionality accessible in each of your reports.
The new TreemapVisualization plugin makes use of this feature to let you view your reports as treemaps. It serves as an example of this new functionality.
Piwik Marketplace
The Piwik Marketplace is a new platform developers can use to publish their plugins and themes so all Piwik users can easily access them. The marketplace is hosted at plugins.piwik.org and is currently in an early development state, but we’re already able to host plugins !
Developers can easily publish their plugins by adding a commit hook to their Github repositories. Every time you push a new tag, the marketplace will make a new version of your plugin available. The marketplace will provide a centralized platform to search for plugins and also provide statistics on plugin usage.
Install Plugins and Themes in one click from within Piwik
Piwik has offered since the beginning the much-loved “one click update” feature. We are bringing the same functionnality to the Marketplace : you will be able to install Plugins and Themes in one click directly within the Piwik interface ! Similarly to WordPress or Firefox, Piwik will let you extend the functionnality of your analytics platform.
Conclusion
In Piwik 2.0 you will be able to install plugins and themes from the marketplace. And, if you’re so inclined, you will be able to create and host your own plugins/themes on the marketplace so everyone can use them. This is by far the accomplishment we are most excited by… the possibilities it opens up for Piwik’s future are truly unlimited. We hope you share our excitement !
Au revoir, until next time !
PS : our mission is to liberate web analytics ; thank you for sharing the word about Piwik 2.0 !
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C++ ffmpeg lib version 7.0 - runtime error
1er septembre 2024, par Chris PI want to make a C++ lib named cppdub which will mimic the python module pydub.


One main function is to export the AudioSegment to a file with a specific format (example : mp3).


The code is :


void check_av_error(int error_code, const std::string& msg) {
 if (error_code < 0) {
 char errbuf[AV_ERROR_MAX_STRING_SIZE];
 av_strerror(error_code, errbuf, sizeof(errbuf));
 throw std::runtime_error(msg + ": " + errbuf);
 }
}

std::string av_err2str_(int errnum) {
 char buf[AV_ERROR_MAX_STRING_SIZE];
 av_strerror(errnum, buf, sizeof(buf));
 return std::string(buf);
}

void log_error(const std::string& msg) {
 std::cerr << "Error: " << msg << std::endl;
}

std::ofstream cppdub::AudioSegment::export_segment(
 std::string& out_f,
 const std::string& format,
 const std::string& codec,
 const std::string& bitrate,
 const std::vector& parameters,
 const std::map& tags,
 const std::string& id3v2_version,
 const std::string& cover) {

 av_log_set_level(AV_LOG_DEBUG);
 avformat_network_init();

 AVFormatContext* format_ctx = nullptr;
 int ret = avformat_alloc_output_context2(&format_ctx, nullptr, format.c_str(), out_f.c_str());
 check_av_error(ret, "Could not allocate format context");

 if (!(format_ctx->oformat->flags & AVFMT_NOFILE)) {
 ret = avio_open(&format_ctx->pb, out_f.c_str(), AVIO_FLAG_WRITE);
 check_av_error(ret, "Could not open output file");
 }

 AVStream* stream = avformat_new_stream(format_ctx, nullptr);
 if (!stream) {
 avformat_free_context(format_ctx);
 throw std::runtime_error("Could not allocate stream");
 }

 const AVCodec* codec_obj = avcodec_find_encoder_by_name(codec.c_str());
 if (!codec_obj) {
 avformat_free_context(format_ctx);
 throw std::runtime_error("Codec not found");
 }

 AVCodecContext* codec_ctx = avcodec_alloc_context3(codec_obj);
 if (!codec_ctx) {
 avformat_free_context(format_ctx);
 throw std::runtime_error("Could not allocate codec context");
 }

 codec_ctx->sample_rate = this->get_frame_rate();
 AVChannelLayout ch_layout_1;
 av_channel_layout_uninit(&ch_layout_1);
 av_channel_layout_default(&ch_layout_1, 2);
 codec_ctx->ch_layout = ch_layout_1; // Adjust based on your needs
 codec_ctx->bit_rate = std::stoi(bitrate);
 codec_ctx->sample_fmt = codec_obj->sample_fmts[0];

 if (format_ctx->oformat->flags & AVFMT_GLOBALHEADER) {
 codec_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
 }

 ret = avcodec_open2(codec_ctx, codec_obj, nullptr);
 check_av_error(ret, "Could not open codec");

 stream->time_base = { 1, codec_ctx->sample_rate };
 ret = avcodec_parameters_from_context(stream->codecpar, codec_ctx);
 check_av_error(ret, "Could not set codec parameters");

 ret = avformat_write_header(format_ctx, nullptr);
 check_av_error(ret, "Error occurred when writing header");

 AVPacket pkt;
 av_init_packet(&pkt);
 pkt.data = nullptr;
 pkt.size = 0;

 int frame_size = av_samples_get_buffer_size(nullptr, codec_ctx->ch_layout.nb_channels,
 codec_ctx->frame_size, codec_ctx->sample_fmt, 0);
 check_av_error(frame_size, "Could not calculate frame size");

 AVFrame* frame = av_frame_alloc();
 if (!frame) {
 avcodec_free_context(&codec_ctx);
 avformat_free_context(format_ctx);
 throw std::runtime_error("Error allocating frame");
 }

 frame->format = codec_ctx->sample_fmt;
 frame->ch_layout = codec_ctx->ch_layout;
 frame->sample_rate = codec_ctx->sample_rate;
 frame->nb_samples = codec_ctx->frame_size;

 ret = av_frame_get_buffer(frame, 0);
 if (ret < 0) {
 av_frame_free(&frame);
 avcodec_free_context(&codec_ctx);
 avformat_free_context(format_ctx);
 throw std::runtime_error("Error allocating frame buffer: " + av_err2str_(ret));
 }

 size_t data_offset = 0;

 while (data_offset < this->raw_data().size()) {
 int samples_to_process = std::min(frame_size, static_cast<int>(this->raw_data().size()) - static_cast<int>(data_offset));

 // Fill the frame with audio data
 ret = avcodec_fill_audio_frame(frame, codec_ctx->ch_layout.nb_channels, codec_ctx->sample_fmt,
 reinterpret_cast<const>(this->raw_data().data()) + data_offset,
 samples_to_process, 0);
 if (ret < 0) {
 log_error("Error filling audio frame: " + av_err2str_(ret));
 av_frame_free(&frame);
 avcodec_free_context(&codec_ctx);
 avformat_free_context(format_ctx);
 throw std::runtime_error("Error filling audio frame: " + av_err2str_(ret));
 }

 data_offset += samples_to_process;

 ret = avcodec_send_frame(codec_ctx, frame);
 if (ret < 0) {
 log_error("Error sending frame for encoding: " + av_err2str_(ret));
 av_frame_free(&frame);
 avcodec_free_context(&codec_ctx);
 avformat_free_context(format_ctx);
 throw std::runtime_error("Error sending frame for encoding: " + av_err2str_(ret));
 }

 while (ret >= 0) {
 ret = avcodec_receive_packet(codec_ctx, &pkt);
 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
 break;
 }
 check_av_error(ret, "Error receiving packet");

 pkt.stream_index = stream->index;

 ret = av_interleaved_write_frame(format_ctx, &pkt);
 check_av_error(ret, "Error writing encoded frame to output file");

 av_packet_unref(&pkt);
 }
 }

 // Flush the encoder
 avcodec_send_frame(codec_ctx, nullptr);
 while (avcodec_receive_packet(codec_ctx, &pkt) == 0) {
 pkt.stream_index = stream->index;
 av_interleaved_write_frame(format_ctx, &pkt);
 av_packet_unref(&pkt);
 }

 av_write_trailer(format_ctx);

 av_frame_free(&frame);
 avcodec_free_context(&codec_ctx);
 avformat_free_context(format_ctx);

 return std::ofstream(out_f, std::ios::binary);
}
</const></int></int>

The runtime error is :


Exception thrown at 0x00007FF945137C9B (avcodec-61.dll) in cppdub_test.exe : 0xC0000005 : Access violation reading location 0x0000024CBCD25080.


for line :


ret = avcodec_send_frame(codec_ctx, frame);


Call stack :


avcodec-61.dll!00007ff945137c9b() Unknown
 avcodec-61.dll!00007ff9451381bb() Unknown
 avcodec-61.dll!00007ff945139679() Unknown
 avcodec-61.dll!00007ff94371521d() Unknown
 avcodec-61.dll!00007ff9434a80c2() Unknown
 avcodec-61.dll!00007ff9434a84a6() Unknown
 avcodec-61.dll!00007ff9434a8749() Unknown
> cppdub_test.exe!cppdub::AudioSegment::export_segment(std::string & out_f, const std::string & format, const std::string & codec, const std::string & bitrate, const std::vector> & parameters, const std::map,std::allocator>> & tags, const std::string & id3v2_version, const std::string & cover) Line 572 C++
 cppdub_test.exe!main() Line 33 C++
 [External Code] 



Autos :


+ this 0x000000d3a08ff690 {data_="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0... ...} cppdub::AudioSegment *
+ bitrate "128000" const std::string &
+ ch_layout_1 {order=AV_CHANNEL_ORDER_NATIVE (1) nb_channels=2 u={mask=3 map=0x0000000000000003 {id=??? name=... opaque=...} } ...} AVChannelLayout
+ codec "libmp3lame" const std::string &
+ codec_ctx 0x0000024cbc78c240 {av_class=avcodec-61.dll!0x00007ff94789c760 {class_name=0x00007ff94789c740 "AVCodecContext" ...} ...} AVCodecContext *
+ codec_obj avcodec-61.dll!0x00007ff9477fa4c0 (load symbols for additional information) {name=0x00007ff9477fa47c "libmp3lame" ...} const AVCodec *
+ cover "" const std::string &
 data_offset 9216 unsigned __int64
+ format "mp3" const std::string &
+ format_ctx 0x0000024cbc788a40 {av_class=avformat-61.dll!0x00007ff99eb09fe0 {class_name=0x00007ff99eb09fc0 "AVFormatContext" ...} ...} AVFormatContext *
+ frame 0x0000024cbc787380 {data=0x0000024cbc787380 {0x0000024cbcd25080 <error reading="reading" characters="characters" of="of">, ...} ...} AVFrame *
 frame_size 9216 int
+ id3v2_version "4" const std::string &
+ out_f "ha-ha-ha.mp3" std::string &
+ parameters { size=0 } const std::vector> &
+ pkt {buf=0x0000000000000000 <null> pts=-9223372036854775808 dts=-9223372036854775808 ...} AVPacket
 ret 9216 int
 samples_to_process 9216 int
+ stream 0x0000024cbc789bc0 {av_class=avformat-61.dll!0x00007ff99eb09840 {class_name=0x00007ff99eb09820 "AVStream" ...} ...} AVStream *
+ tags { size=0 } const std::map,std::allocator>> &
</null></error>

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