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  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

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    10 avril 2011

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  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

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    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

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  • Incrementality Testing : Quick-Start Guide (With Calculations)

    26 mars 2024, par Erin

    How do you know when a campaign is successful ? When you earn more revenue than last month ?

    Maybe.

    But how do you know how much of an impact a certain campaign or channel had on your sales ?

    With marketing attribution, you can determine credit for each sale.

    But if you want a deeper look, you need to understand the incremental impact of each channel and campaign.

    The way you do this ?

    Incrementality testing.

    In this guide, we break down what incrementality is, why it’s important and how to test it so you can double down on the activities driving the most growth.

    What is incrementality ?

    So, what exactly is incrementality ?

    Let’s say you just ran a marketing campaign for a new product. The launch was a success. Breakthrough numbers in your revenue. You used a variety of channels and activities to bring it all together.

    So, you launch a plan for next month’s campaign. But you don’t truly know what moved the needle.

    Did you just hit new highs because your audience is bigger ? And your brand is greater ?

    Or did the recent moves you made make a direct difference ?

    This is incrementality.

    What is incrementally in marketing?

    Incrementality is growth directly attributed to marketing efforts beyond the overall impact of your brand. By measuring and conducting incrementality testing, you can clearly see how much of a difference each activity or channel truly impacted business growth. 

    What is incrementality testing ?

    Incrementality testing allows marketers to gauge the effectiveness of a marketing tactic or strategy. It tells you if a particular marketing activity had a positive, negative or neutral impact on your business. 

    It also tells you the overall impact it can have on your key performance indicators (KPIs). 

    The result ?

    You can pinpoint the highest-performing moves and incorporate them into your marketing workflows. You also discard marketing strategies with negligible, neutral or even negative impacts. 

    For example, let’s say you think a B2B LinkedIn ads campaign will help you reach your product launch goals. An incrementality test can tell you if the introduction of this campaign will help you get to the desired outcome.

    How incrementality testing works

    Before diving into your testing phase, you must clearly identify your KPIs.

    Here are the top KPIs you should be tracking on your website :

    • Ad impressions
    • Website visits
    • Leads
    • Sales

    The exact KPIs will depend on your marketing goals. You’re ready to move forward once you know your key performance indicators.

    Here’s how incrementality testing works step-by-step :

    1. Define a test and control group

    The first step is to define a test group and control group. 

    • A test group is a segment of your target audience that’s exposed to the marketing campaign. 
    • A control group is a segment that isn’t. 

    Keep in mind that both groups have similar demographics and other relevant characteristics. 

    2. Execute your campaign

    The second step is to run the marketing campaign on the test group. This can be a Facebook ad, LinkedIn ad or email marketing campaign.

    It all depends on your goals and your primary channels.

    3. Measure outcomes

    The third step is to measure the campaign’s impact based on your KPIs. 

    Let’s say a brand wants to see if a certain marketing move increases its leads. The test can tell them the number of email sign-ups with and without the campaign. 

    4. Compare results

    Next, compare the test group results with the control group. The difference in outcomes tells you the impact of that campaign. You can then use this difference to inform your future marketing strategies. 

    With Matomo, you can easily track results from campaigns — like conversions. 

    Our platform lets you quickly see what channels are getting the best results so you can gain insights into incrementality and optimise your strategy.

    Try Matomo for Free

    Get the web insights you need, without compromising data accuracy.

    No credit card required

    Why it’s important to conduct incrementality tests

    The digital marketing industry is constantly changing. Marketers need to stay on their toes to keep up. Incrementality tests help you stay on track.

    For example, let’s say you’re selling laptops. You can increase your warranty period to three years to see the impact on sales. An incrementality test will tell you if this move will boost your sales (and by how much).

    Now, let’s dive into the reasons why you need to consistently conduct incrementality tests :

    Determine the right tactics for success

    Identifying the best action to grow your business is a challenge every marketer faces.

    The best way to identify marketing tactics is by conducting incrementality testing. These tactics are bound to work since data back them. As a result, you can optimise your marketing budget and maximise your ROIs. 

    It lets you run multiple tests to identify the most impactful strategy between :

    • An email marketing strategy
    • A social media strategy 
    • A PPC ad

    For instance, an incrementality test might suggest email marketing will be more cost-effective than an ad campaign. What you can do is :

    • Expose the test group to the email marketing campaign and then compare the results with the control group
    • Expose the test group to the ad campaign and then compare its results with the control group

    Then, you can calculate the difference in results between the two marketing campaigns. This lets you focus on the strategy with a better ROI or ROAS potential. 

    Accurate data

    Marketing data is powerful. But getting accurate data can be challenging. With incrementality testing, you get to know the true impact of a marketing campaign. 

    Plus, with this testing strategy, you don’t have to waste your marketing budget. 

    With Matomo, you get 100% accurate data on all website activities. 

    Unlike Google Analytics, Matomo doesn’t rely on inaccurate data sampling — limiting the amount of data analysed.

    Try Matomo for Free

    Get the web insights you need, without compromising data accuracy.

    No credit card required

    Get the most out of your marketing investment

    Every business owner wants to maximise their return on investment. The ROI you get mainly depends on the marketing strategy. 

    For instance, email marketing offers an ROI of about 40:1 with some sources even reporting as high as 72:1.

    Incrementality testing helps you make informed investment decisions. With it, you can pinpoint the tactics that are most likely to bring the highest return. You can then focus your resources on them. It also helps you stay away from low-performing strategies. 

    Increase revenue

    It’s safe to say that the goal behind every marketing effort is a revenue boost. The higher your revenue, the more profits you generate. However, for many marketers, it’s an uphill battle. 

    With incrementality testing, you can boost your revenue by focusing your efforts in the right direction. 

    Get more traffic

    Incrementality testing tells you if a particular strategy can help you drive more traffic. You can use it to get more high-quality leads to your website or landing pages and double down on high-traffic strategies to increase those leads.

    How to test incrementality

    How to test incrementality.

    Developing an implementation plan is crucial to generate accurate insights from an incrementality test. Incrementality testing is like running a science experience. You need to go through several stages. Each stage is important for generating accurate results. 

    Here’s how you test incrementality :

    Define your goals

    Get clarity on what you want to achieve with this campaign. Which KPIs do you want to test ? Is it the return on your overall investment (ROI), return on ad spend (ROAS) or something else ?

    Segment your audience

    Selecting the right audience segment is crucial to getting accurate insights with an incrementality test. Decide the demographics and psychographics of the audience you want to target. Then, divide this audience segment into two sub-parts :

    • Test group (people you’ll expose to the marketing campaign)
    • Control group (people who won’t be exposed to the campaign)

    These groups are a part of the larger segment. This means people in both groups will have similar attributes. 

    Launch the test at the right time

    Before the launch, decide on the length of the test. Ideally, it should be at least one week. Don’t run any other campaigns in this window, as it can interfere with the results. 

    Analyse the data and take action

    Once the campaign is over, measure the results from both groups. Compare the data to identify incremental lift in your selected KPIs. 

    Let’s say you want to see if this campaign can boost your sales. Check to see if the test group responded differently than the control group. If the sales equal your desired outcome, you have a winning strategy. 

    Not all incrementality tests result in a positive incremental lift ; Some can be neutral, indicating that the campaign didn’t have any effect. Some can even indicate a negative lift, which means your core group performed better than the test group. 

    Lastly, take action based on the test findings. 

    Incrementality test examples 

    You can use incrementality testing to identify gaps and growth opportunities in your strategy. 

    Here’s an example :

    Let’s say a company runs an incrementality test on a YouTube marketing strategy for sales. The results indicate that the ROI was only $0.10, as the company makes $1.10 for every $1.00 spent. This alarms the marketing department and helps them optimise the campaign for a higher ROI. 

    Here’s another practical example :

    Let’s say a retail business wanted to test the effectiveness of its ad campaign. So, the retailer optimises its ad campaign after conducting an incrementality test on a test and control group. As a result, they experienced a 34% incremental increase in sales.

    How to calculate incrementality in marketing

    Once you’ve aggregated the data, it’s time to calculate. There are two ways to calculate incrementality :

    Incremental profit 

    The first one is incremental profit. It tells you how much profit you can generate with a strategy (If any). With it, you get the actual value of a marketing campaign. 

    It’s calculated with the following formula :

    Test group profit – control group profit = incremental profit 

    For example, let’s say you’re exposing a test group to a paid ads campaign. And it generates a profit of $3,000. On the other hand, the control group generated a $2,000 profit. 

    In this case, your incremental profit will be $1,000 ($3,000 – $2,000). 

    However, if the paid ads campaign generates a $2,000 profit, the incremental profit would be zero. Essentially, you’re generating the same profit as before, which means the campaign doesn’t work. Similarly, a marketing strategy is no good if it generates lower profits than the control group. 

    Incremental lift

    Incremental lift measures the difference in the conversions you generate with each group. 

    Here’s the formula :

    (Test – Control)/Control x 100 = Lift

    So, let’s say the test group and control group generated 2,000 and 1,000 conversions, respectively. 

    The incremental lift you’ll get from this incrementality test would be :

    (2,000 – 1,000)/1,000 x 100 = 100

    This turns out to be a 100% incremental lift.

    How to track incrementality with Matomo

    Incrementality testing lets you use a practical approach to identify the best marketing path for your business.

    It helps you develop a hyper-focused approach that gives you access to accurate and practical data. 

    With these insights, you can confidently move forward to maximise your ROI since it helps you focus on high-performing tactics. 

    The result is more revenue and profit for your business. 

    Plus, all you need to do is identify your target audience, divide them into two groups and run your test. Then, the results will be compared to determine if the marketing strategy offers any value. 

    Conducting incrementality tests may take time and expertise. 

    But, thanks to Matomo, you can leverage accurate insights for your incrementality tests to ensure you make the right decisions to grow your business.

    See for yourself why over 1 million websites choose Matomo. Try it free for 21-days now. No credit card required.

  • A Guide to Bank Customer Segmentation

    18 juillet 2024, par Erin

    Banking customers are more diverse, complex, and demanding than ever. As a result, banks have to work harder to win their loyalty, with 75% saying they would switch to a bank that better fits their needs.

    The problem is banking customers’ demands are increasingly varied amid economic uncertainties, increased competition, and generational shifts.

    If banks want to retain their customers, they can’t treat them all the same. They need a bank customer segmentation strategy that allows them to reach specific customer groups and cater to their unique demands.

    What is customer segmentation ?

    Customer segmentation divides a customer base into distinct groups based on shared characteristics or behaviours.

    This allows companies to analyse the behaviours and needs of different customer groups. Banks can use these insights to target segments with relevant marketing throughout the customer cycle, e.g., new customers, inactive customers, loyal customers, etc.

    You combine data points from multiple segmentation categories to create a customer segment. The most common customer segmentation categories include :

    • Demographic segmentation
    • Website activity segmentation
    • Geographic segmentation
    • Purchase history segmentation
    • Product-based segmentation
    • Customer lifecycle segmentation
    • Technographic segmentation
    • Channel preference segmentation
    • Value-based segmentation
    A chart with icons representing the different customer segmentation categories for banks

    By combining segmentation categories, you can create detailed customer segments. For example, high-value customers based in a particular market, using a specific product, and approaching the end of the lifecycle. This segment is ideal for customer retention campaigns, localised for their market and personalised to satisfy their needs.

    Browser type in Matomo

    Matomo’s privacy-centric web analytics solution helps you capture data from the first visit. Unlike Google Analytics, Matomo doesn’t use data sampling (more on this later) or AI to fill in data gaps. You get 100% accurate data for reliable insights and customer segmentation.

    Try Matomo for Free

    Get the web insights you need, without compromising data accuracy.

    No credit card required

    Why is customer segmentation important for banks ?

    Customer segmentation allows you to address the needs of specific groups instead of treating all of your customers the same. This has never been more important amid a surge in bank switching, with three in four customers ready to switch to a provider that better suits their needs.

    Younger customers are the most likely to switch, with 19% of 18-24 year olds changing their primary bank in the past year (PDF).

    Customer expectations are changing, driven by economic uncertainties, declining trust in traditional banking, and the rise of fintech. Even as economic pressures lift, banks need to catch up with the demands of maturing millennials, Gen Z, and future generations of banking customers.

    Switching is the new normal, especially for tech-savvy customers encouraged by an expanding world of digital banking options.

    To retain customers, banks need to know them better and understand how their needs change over time. Customer retention provides the insights banks need to understand these needs at a granular level and the means to target specific customer groups with relevant messages.

    At its core, customer segmentation is essential to banks for two key reasons :

    • Customer retention : Holding on to customers for longer by satisfying their personal needs.
    • Customer lifetime value : Maximising ongoing customer revenue through retention, purchase frequency, cross-selling, and upselling.

    Here are some actionable bank customer segmentation strategies that can achieve these two objectives :

    Prevent switching with segment analysis

    Use customer segmentation to prevent them from switching to rivals by knowing what they want from you. Analyse customer needs and how they change throughout the lifecycle. Third-party data reveals general trends, but what do your customers want ?

    A graph showing different customer segments and example data.

    Use first-party customer data and segmentation to go beyond industry trends. Know exactly what your customers want from you and how to deliver targeted messages to each segment — e.g., first-time homebuyers vs. retirement planners.

    Keep customers active with segment targeting

    Target customer segments to keep customers engaged and motivated. Create ultra-relevant marketing messages and deliver them with precision to distinct customer segments. Nurture customer motivation by continuing to address their problems and aspirations.

    Improve the quality of services and products

    Knowing your customers’ needs in greater detail allows you to adapt your products and messages to cater to the most important segments. Customers switch banks because they feel their needs are better met elsewhere. Prevent this by implementing customer segmentation insights into product development and marketing.

    Personalise customer experiences by layering segments

    Layer segments to create ultra-specific target customer groups for personalised services and marketing campaigns. For example, top-spending customers are one of your most important segments, but there’s only so much you can do with this. However, you can divide this group into even narrower target audiences by layering multiple segments.

    For example, segmenting top-spending customers by product type can create more relevant messaging. You can also segment recent activity and pinpoint specific usage segments, such as those with a recent drop in transactions.

    Now, you have a three-layered segment of high-spending customers who use specific products less often and whom you can target with re-engagement campaigns.

    Maximise customer lifetime value

    Bringing all of this together, customer segmentation helps you maximise customer lifetime value in several ways :

    • Prevent switching
    • Enhance engagement and motivation
    • Re-engage customers
    • Cross-selling, upselling
    • Personalised customer loyalty incentives

    The longer you retain customers, the more you can learn about them, and the more effective your lifetime value campaigns will be.

    Balancing bank customer segmentation with privacy and marketing regulations

    Of course, customer segmentation uses a lot of data, which raises important legal and ethical questions. First, you need to comply with data and privacy regulations, such as GDPR and CCPA. Second, you also have to consider the privacy expectations of your customers, who are increasingly aware of privacy issues and rising security threats targeting financial service providers.

    If you aim to retain and maximise customer value, respecting their privacy and protecting their data are non-negotiables.

    Regulators are clamping down on finance

    Regulatory scrutiny towards the finance industry is intensifying, largely driven by the rise of fintech and the growing threat of cyber attacks. Not only was 2023 a record-breaking year for finance security breaches but several compromises of major US providers “exposed shortcomings in the current supervisory framework and have put considerable public pressure on banking authorities to reevaluate their supervisory and examination programs” (Deloitte).

    Banks face some of the strictest consumer protections and marketing regulations, but the digital age creates new threats.

    In 2022, the Consumer Financial Protection Bureau (CFPB) warned that digital marketers must comply with finance consumer protections when targeting audiences. CFPB Director Rohit Chopra said : “When Big Tech firms use sophisticated behavioural targeting techniques to market financial products, they must adhere to federal consumer financial protection laws.”

    This couldn’t be more relevant to customer segmentation and the tools banks use to conduct it.

    Customer data in the hands of agencies and big tech

    Banks should pay attention to the words of CFPB Director Rohit Chopra when partnering with marketing agencies and choosing analytics tools. Digital marketing agencies are rarely experts in financial regulations, and tech giants like Google don’t have the best track record for adhering to them.

    Google is constantly in the EU courts over its data use. In 2022, the EU ruled that the previous version of Google Analytics violated EU privacy regulations. Google Analytics 4 was promptly released but didn’t resolve all the issues.

    Meanwhile, any company that inadvertently misuses Google Analytics is legally responsible for its compliance with data regulations.

    Banks need a privacy-centric alternative to Google Analytics

    Google’s track record with data regulation compliance is a big issue, but it’s not the only one. Google Analytics uses data sampling, which Google defines as the “practice of analysing a subset of data to uncover meaningful information from a larger data set.”

    This means Google Analytics places thresholds on how much of your data it analyses — anything after that is calculated assumptions. We’ve explained why this is such a problem before, and GA4 relies on data sampling even more than the previous version.

    In short, banks should question whether they can trust Google with their customer data and whether they can trust Google Analytics to provide accurate data in the first place. And they do. 80% of financial marketers say they’re concerned about ad tech bias from major providers like Google and Meta.

    Segmentation options in Matomo

    Matomo is the privacy-centric alternative to Google Analytics, giving you 100% data ownership and compliant web analytics. With no data sampling, Matomo provides 20-40% more data to help you make accurate, informed decisions. Get the data you need for customer segmentation without putting their data at risk.

    Try Matomo for Free

    Get the web insights you need, without compromising data accuracy.

    No credit card required

    Bank customer segmentation examples

    Now, let’s look at some customer segments you create and layer to target specific customer groups.

    Visit-based segmentation

    Visit segmentation filters audiences based on the pages they visit on your website and the behaviors they exhibit—for example, first-time visitors vs. returning visitors or landing page visitors vs. blog page visitors.

    If you look at HSBC’s website, you’ll see it is structured into several categories for key customer personas. One of its segments is international customers living in the US, so it has pages and resources expats, people working in the US, people studying in the US, etc. 

    A screenshot of HSBC's US website showing category pages for different customer personas

    By combining visit-based segmentation with ultra-relevant pages for specific target audiences, HSBC can track each group’s demand and interest and analyse their behaviours. It can determine which audiences are returning, which products they want, and which messages convert them.

    Demographic segmentation

    Demographic segmentation divides customers by attributes such as age, gender, and location. However, you can also combine these insights with other non-personal data to better understand specific audiences.

    For example, in Matomo, you can segment audiences based on the language of their browser, the country they’re visiting from, and other characteristics. So, in this case, HSBC could differentiate between visitors already residing in the US and those outside of the country looking for information on moving there.

    a screenshot of Matomo's location reporting

    It could determine which countries they’re visiting, which languages to localise for, and which networks to run ultra-relevant social campaigns on.

    Interaction-based segmentation

    Interaction-based segmentation uses events and goals to segment users based on their actions on your website. For example, you can segment audiences who visit specific URLs, such as a loan application page, or those who don’t complete an action, such as failing to complete a form.

    A screenshot of setting up goals in Matamo

    With events and goals set up, you can track the actions visitors complete before making purchases. You can monitor topical interests, page visits, content interactions, and pathways toward conversions, which feed into their customer journey.

    From here, you can segment customers based on their path leading up to their first purchase, follow-up purchases, and other actions.

    Purchase-based segmentation

    Purchase-based segmentation allows you to analyse the customer behaviours related to their purchase history and spending habits. For example, you can track the journey of repeat customers or identify first-time buyers showing interest in other products/services.

    You can implement these insights into your cross-selling and upselling campaigns with relevant messages designed to increase retention and customer lifetime value.

    Get reliable website analytics for your bank customer segmentation needs

    With customers switching in greater numbers, banks need to prioritise customer retention and lifetime value. Customer segmentation allows you to target specific customer groups and address their unique needs — the perfect strategy to stop them from moving to another provider.

    Quality, accurate data is the key ingredient of an effective bank customer segmentation strategy. Don’t accept data sampling from Google Analytics or any other tool that limits the amount of your own data you can access. Choose a web analytics tool like Matamo that unlocks the full potential of your website analytics to get the most out of bank customer segmentation.

    Matomo is trusted by over 1 million websites globally, including many banks, for its accuracy, compliance, and reliability. Discover why financial institutions rely on Matomo to meet their web analytics needs.

    Start collecting the insights you need for granular, layered segmentation — without putting your bank customer data at risk. Request a demo of Matomo now.

  • FFmpeg matlab error : At least one output file must be specified ? [closed]

    3 mars, par as moh

    I'm trying to get I frames from a video using Matlab using this command system(sprintf('ffmpeg -i testVid.mp4 -vf "select=eq(pict_type\,I)" -vsync vfr output_%03d.png')); ,but i get this message

    


     ffmpeg version 7.1-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers 
  built with gcc 14.2.0 (Rev1, Built by MSYS2 project) 
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-liblc3 --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint 
  libavutil      59. 39.100 / 59. 39.100 
  libavcodec     61. 19.100 / 61. 19.100 
  libavformat    61.  7.100 / 61.  7.100 
  libavdevice    61.  3.100 / 61.  3.100 
  libavfilter    10.  4.100 / 10.  4.100 
  libswscale      8.  3.100 /  8.  3.100 
  libswresample   5.  3.100 /  5.  3.100 
  libpostproc    58.  3.100 / 58.  3.100 
Trailing option(s) found in the command: may be ignored. 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'testVid.mp4': 
  Metadata: 
    major_brand     : isom 
    minor_version   : 512 
    compatible_brands: isomiso2avc1mp41 
    encoder         : Lavf57.83.100 
  Duration: 00:00:02.02, start: 0.000000, bitrate: 12798 kb/s 
  Stream #0:0[0x1](eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuvj420p(pc, progressive), 1280x720 [SAR 1:1 DAR 16:9], 12662 kb/s, 29.74 fps, 30 tbr, 90k tbn (default) 
      Metadata: 
        handler_name    : VideoHandler 
        vendor_id       : [0][0][0][0] 
  Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 121 kb/s (default) 
      Metadata: 
        handler_name    : SoundHandler 
        vendor_id       : [0][0][0][0] 
At least one output file must be specified 


    


    i searched and tried many cases but i don't know where is the problem, any help please ?