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• What is Audience Segmentation ? The 5 Main Types & Examples

  16 novembre 2023, par Erin — Analytics Tips

  The days of mass marketing with the same message for millions are long gone. Today, savvy marketers instead focus on delivering the most relevant message to the right person at the right time.

  They do this at scale by segmenting their audiences based on various data points. This isn’t an easy process because there are many types of audience segmentation. If you take the wrong approach, you risk delivering irrelevant messages to your audience — or breaking their trust with poor data management.

  In this article, we’ll break down the most common types of audience segmentation, share examples highlighting their usefulness and cover how you can segment campaigns without breaking data regulations.

  What is audience segmentation ?

  Audience segmentation is when you divide your audience into multiple smaller specific audiences based on various factors. The goal is to deliver a more targeted marketing message or to glean unique insights from analytics.

  It can be as broad as dividing a marketing campaign by location or as specific as separating audiences by their interests, hobbies and behaviour.

  

  Audience segmentation inherently makes a lot of sense. Consider this : an urban office worker and a rural farmer have vastly different needs. By targeting your marketing efforts towards agriculture workers in rural areas, you’re honing in on a group more likely to be interested in farm equipment. 

  Audience segmentation has existed since the beginning of marketing. Advertisers used to select magazines and placements based on who typically read them. They would run a golf club ad in a golf magazine, not in the national newspaper.

  How narrow you can make your audience segments by leveraging multiple data points has changed.

  Why audience segmentation matters

  In a survey by McKinsey, 71% of consumers said they expected personalisation, and 76% get frustrated when a vendor doesn’t deliver.

  

  These numbers reflect expectations from consumers who have actively engaged with a brand — created an account, signed up for an email list or purchased a product.

  They expect you to take that data and give them relevant product recommendations — like a shoe polishing kit if you bought nice leather loafers.

  If you don’t do any sort of audience segmentation, you’re likely to frustrate your customers with post-sale campaigns. If, for example, you just send the same follow-up email to all customers, you’d damage many relationships. Some might ask : “What ? Why would you think I need that ?” Then they’d promptly opt out of your email marketing campaigns.

  To avoid that, you need to segment your audience so you can deliver relevant content at all stages of the customer journey.

  5 key types of audience segmentation

  To help you deliver the right content to the right person or identify crucial insights in analytics, you can use five types of audience segmentation : demographic, behavioural, psychographic, technographic and transactional.

  

  Demographic segmentation 

  Demographic segmentation is when you segment a larger audience based on demographic data points like location, age or other factors.

  The most basic demographic segmentation factor is location, which is easy to leverage in marketing efforts. For example, geographic segmentation can use IP addresses and separate marketing efforts by country. 

  But more advanced demographic data points are becoming increasingly sensitive to handle. Especially in Europe, GDPR makes advanced demographics a more tentative subject. Using age, education level and employment to target marketing campaigns is possible. But you need to navigate this terrain thoughtfully and responsibly, ensuring meticulous adherence to privacy regulations.

  Potential data points :

  • Location
  • Age
  • Marital status
  • Income
  • Employment 
  • Education

  Example of effective demographic segmentation :

  A clothing brand targeting diverse locations needs to account for the varying weather conditions. In colder regions, showcasing winter collections or insulated clothing might resonate more with the audience. Conversely, in warmer climates, promoting lightweight or summer attire could be more effective. 

  Here are two ads run by North Face on Facebook and Instagram to different audiences to highlight different collections :

  

  Each collection is featured differently and uses a different approach with its copy and even the media. With social media ads, targeting people based on advanced demographics is simple enough — you can just single out the factors when making your campaign. But if you don’t want to rely on these data-mining companies, that doesn’t mean you have no options for segmentation.

  Consider allowing people to self-select their interests or preferences by incorporating a short survey within your email sign-up form. This simple addition can enhance engagement, decrease bounce rates, and ultimately improve conversion rates, offering valuable insights into audience preferences.

  This is a great way to segment ethically and without the need of data-mining companies.

  Behavioural segmentation

  Behavioural segmentation segments audiences based on their interaction with your website or app.

  You use various data points to segment your target audience based on their actions.

  Potential data points :

  • Page visits
  • Referral source
  • Clicks
  • Downloads
  • Video plays
  • Goal completion (e.g., signing up for a newsletter or purchasing a product)

  Example of using behavioural segmentation to improve campaign efficiency :

  One effective method involves using a web analytics tool such as Matomo to uncover patterns. By segmenting actions like specific clicks and downloads, pinpoint valuable trends—identifying actions that significantly enhance visitor conversions. 

  

  For instance, if a case study video substantially boosts conversion rates, elevate its prominence to capitalise on this success.

  Then, you can set up a conditional CTA within the video player. Make it pop up after the user has watched the entire video. Use a specific form and sign them up to a specific segment for each case study. This way, you know the prospect’s ideal use case without surveying them.

  This is an example of behavioural segmentation that doesn’t rely on third-party cookies.

  Psychographic segmentation

  Psychographic segmentation is when you segment audiences based on your interpretation of their personality or preferences.

  Potential data points :

  • Social media patterns
  • Follows
  • Hobbies
  • Interests

  Example of effective psychographic segmentation :

  Here, Adidas segments its audience based on whether they like cycling or rugby. It makes no sense to show a rugby ad to someone who’s into cycling and vice versa. But to rugby athletes, the ad is very relevant.

  

  If you want to avoid social platforms, you can use surveys about hobbies and interests to segment your target audience in an ethical way.

  Technographic segmentation

  Technographic segmentation is when you single out specific parts of your audience based on which hardware or software they use.

  Potential data points :

  • Type of device used
  • Device model or brand
  • Browser used

  Example of segmenting by device type to improve user experience :

  Upon noticing a considerable influx of tablet users accessing their platform, a leading news outlet decided to optimise their tablet browsing experience. They overhauled the website interface, focusing on smoother navigation and better readability for tablet users. These changes offered tablet users a seamless and enjoyable reading experience tailored precisely to their device.

  Transactional segmentation

  Transactional segmentation is when you use your customers’ purchase history to better target your marketing message to their needs.

  When consumers prefer personalisation, they typically mean based on their actual transactions, not their social media profiles.

  Potential data points :

  • Average order value
  • Product categories purchased within X months
  • X days since the last purchase of a consumable product

  Example of effective transactional segmentation :

  A pet supply store identifies a segment of customers consistently purchasing cat food but not other pet products. They create targeted email campaigns offering discounts or loyalty rewards specifically for cat-related items to encourage repeat purchases within this segment.

  If you want to improve customer loyalty and increase revenue, the last thing you should do is send generic marketing emails. Relevant product recommendations or coupons are the best way to use transactional segmentation.

  B2B-specific : Firmographic segmentation

  Beyond the five main segmentation types, B2B marketers often use “firmographic” factors when segmenting their campaigns. It’s a way to segment campaigns that go beyond the considerations of the individual.

  Potential data points :

  • Company size
  • Number of employees
  • Company industry
  • Geographic location (office)

  Example of effective firmographic segmentation :

  Companies of different sizes won’t need the same solution — so segmenting leads by company size is one of the most common and effective examples of B2B audience segmentation.

  The difference here is that B2B campaigns are often segmented through manual research. With an account-based marketing approach, you start by researching your potential customers. You then separate the target audience into smaller segments (or even a one-to-one campaign).

  Start segmenting and analysing your audience more deeply with Matomo

  Segmentation is a great place to start if you want to level up your marketing efforts. Modern consumers expect to get relevant content, and you must give it to them.

  But doing so in a privacy-sensitive way is not always easy. You need the right approach to segment your customer base without alienating them or breaking regulations.

  That’s where Matomo comes in. Matomo champions privacy compliance while offering comprehensive insights and segmentation capabilities. With robust privacy controls and cookieless configuration, it ensures GDPR and other regulations are met, empowering data-driven decisions without compromising user privacy.

  Take advantage of our 21-day free trial to get insights that can help you improve your marketing strategy and better reach your target audience. No credit card required.

• Stage-Whisper is not working because of missing files

  24 novembre 2023, par Tingtong

  I tried to install this here : https://github.com/Stage-Whisper/Stage-Whisper

  


  Once i put the audio file in it, it is still loading and loading but not transcribing it.

  


  So after that i checked the requirements and packages, if there is something missing and there is. I installed those here :

  


  Node (required for Electron)
Yarn (required for Electron)
Python 3.x (required for backend)
Rust (required for backend)
ffmpeg (required for backend)
Poetry (required for backend)


  


  I installed them with homebrew. There are some errors showing up, once i launch the electron programm with "yarn dev" : ERROR : "could not locate binding files"

  


  I also tried "poetry run python stagewhisper —input /path/to/audio/file.mp3", but got following message. Poetry could not find a pyproject.toml file in /Users/Administrator/Desktop/Stage-Whisper or its parents.

  


  Where do i have to put the file pyproject.toml and what do i have to write in it ?

  


  So i checked with brew info all tools which i need for Stage-Whisper. Screenshots :enter image description here
[enter image description here](https://i.stack.imgur.com/sirb3.png)

  


  What i tried was to update those packages/requirements which where missing, with "sudo port install requirementPackageName ". But after checking with brew info again, those parts are still missing. So does that actually work or do i have to install those missing stuff with homebrew ? I have Mac Mojave 10.14.6 and Homebrew 4.1.18 Version.

  


  I also got an error, while i installed those tools with homebrew :

  


  ERROR : You are using macOS 10.14.
We (and Apple) do not provide support for this old version. It is expected behaviour that some formulae will fail to build in this old version... etc

  


  Thank you for your help guys.

  


  Edit :

  


  


  yarn install v1.22.19 warning ../../../package.json : No license field
[1/4] 🔍 Resolving packages... [2/4] 🚚 Fetching packages... [3/4]
🔗 Linking dependencies... warning "@emotion/react >
@emotion/babel-plugin@11.10.2" has unmet peer dependency
"@babel/core@^7.0.0". warning "@emotion/react > @emotion/babel-plugin

  


  


  @babel/plugin-syntax-jsx@7.18.6" has unmet peer dependency "@babel/core@^7.0.0-0". warning " > autoprefixer@10.4.4" has unmet
peer dependency "postcss@^8.1.0". warning " >
eslint-config-airbnb@19.0.4" has unmet peer dependency
"eslint-plugin-react-hooks@^4.3.0".
[----------------------------------------------------------------------------------------------------------------------------------------------------------------------------] 0/890^[4/4] 🔨 Building fresh packages... [1/7] ⠁ better-sqlite3
[-/7] ⠁ waiting... [3/7] ⠁ sqlite3 [4/7] ⠁ esbuild error
/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/better-sqlite3 :
Command failed. Exit code : 1 Command : prebuild-install || npm run
build-release Arguments : Directory :
/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/better-sqlite3
Output : prebuild-install warn install No prebuilt binaries found
(target=20.9.0 runtime=node arch=x64 libc= platform=darwin)

  


  


  


  better-sqlite3@7.6.2 build-release
node-gyp rebuild —release

  


  


  gyp info it worked if it ends with ok gyp info using node-gyp@9.3.0
gyp info using node@20.9.0 | darwin | x64 gyp info find Python using
Python version 3.9.14 found at "/usr/local/bin/python3" gyp info spawn
/usr/local/bin/python3 gyp info spawn args [ gyp info spawn args
  
'/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/electron-rebuild/node_modules/node-gyp/gyp/gyp_main.py',
gyp info spawn args 'binding.gyp', gyp info spawn args '-f', gyp
info spawn args 'make', gyp info spawn args '-I', gyp info spawn
args
  
'/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/better-sqlite3/build/config.gypi',
gyp info spawn args '-I', gyp info spawn args
  
'/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/electron-rebuild/node_modules/node-gyp/addon.gypi',
gyp info spawn args '-I', gyp info spawn args
  
'/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/common.gypi',
gyp info spawn args '-Dlibrary=shared_library', gyp info spawn args
'-Dvisibility=default', gyp info spawn args
  
'-Dnode_root_dir=/Users/administrator/Library/Caches/node-gyp/20.9.0',
gyp info spawn args
  
'-Dnode_gyp_dir=/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/electron-rebuild/node_modules/node-gyp',
gyp info spawn args
  &#xA;'-Dnode_lib_file=/Users/administrator/Library/Caches/node-gyp/20.9.0/<(target_arch)/node.lib',&#xA;gyp info spawn args
  &#xA;'-Dmodule_root_dir=/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/better-sqlite3',&#xA;gyp info spawn args '-Dnode_engine=v8', gyp info spawn args
  &#xA;'—depth=.', gyp info spawn args '—no-parallel', gyp info spawn&#xA;args '—generator-output', gyp info spawn args 'build', gyp info&#xA;spawn args '-Goutput_dir=.' gyp info spawn args ] gyp info spawn&#xA;make gyp info spawn args [ 'BUILDTYPE=Release', '-C', 'build' ]
  &#xA;TOUCH ba23eeee118cd63e16015df367567cb043fed872.intermediate ACTION&#xA;deps_sqlite3_gyp_locate_sqlite3_target_copy_builtin_sqlite3&#xA;ba23eeee118cd63e16015df367567cb043fed872.intermediate TOUCH&#xA;Release/obj.target/deps/locate_sqlite3.stamp CC(target)&#xA;Release/obj.target/sqlite3/gen/sqlite3/sqlite3.o LIBTOOL-STATIC&#xA;Release/sqlite3.a CXX(target)&#xA;Release/obj.target/better_sqlite3/src/better_sqlite3.o In file&#xA;included from ../src/better_sqlite3.cpp:4 : In file included from&#xA;./src/better_sqlite3.lzz:11 : In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/node.h:73 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8.h:24 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-array-buffer.h:12 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-local-handle.h:12 :&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:465:30 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;SHARED_EXTERNAL_POINTER_TAGS(CHECK_SHARED_EXTERNAL_POINTER_TAGS)&#xA;^ /Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:465:30 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:465:30 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:465:30 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:465:30 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;PER_ISOLATE_EXTERNAL_POINTER_TAGS(CHECK_NON_SHARED_EXTERNAL_POINTER_TAGS)&#xA;^ /Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:466:35 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:693:61 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;static_assert(kJSObjectType + 1 == kFirstJSApiObjectType) ;&#xA;^&#xA;, "" /Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:694:55 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;static_assert(kJSObjectType < kLastJSApiObjectType) ;&#xA;^&#xA;, "" /Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-internal.h:695:63 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;static_assert(kFirstJSApiObjectType < kLastJSApiObjectType) ;&#xA;^&#xA;, "" In file included from ../src/better_sqlite3.cpp:4 : In file included from&#xA;./src/better_sqlite3.lzz:11 : In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/node.h:73 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8.h:24 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-array-buffer.h:13 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-object.h:9 :&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-maybe.h:106:45 :&#xA;error : no template named 'is_lvalue_reference_v' in namespace 'std' ;&#xA;did you mean 'is_lvalue_reference' ? template >&#xA; ^ &#xA;is_lvalue_reference /Library/Developer/CommandLineTools/usr/include/c++/v1/type_traits:780:50 :&#xA;note : 'is_lvalue_reference' declared here template struct&#xA;_LIBCPP_TEMPLATE_VIS is_lvalue_reference : public false_type {} ;&#xA;^ In file included from ../src/better_sqlite3.cpp:4 : In file included from&#xA;./src/better_sqlite3.lzz:11 : In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/node.h:73 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8.h:24 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-array-buffer.h:13 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-object.h:9 :&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-maybe.h:106:69 :&#xA;error : expected '(' for function-style cast or type construction
  &#xA;template >&#xA; ^ /Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-maybe.h:123:43 :&#xA;error : no template named 'is_lvalue_reference_v' in namespace 'std' ;&#xA;did you mean 'is_lvalue_reference' ? template * = nullptr>&#xA; ^ &#xA;is_lvalue_reference /Library/Developer/CommandLineTools/usr/include/c++/v1/type_traits:780:50 :&#xA;note : 'is_lvalue_reference' declared here template struct&#xA;_LIBCPP_TEMPLATE_VIS is_lvalue_reference : public false_type {} ;&#xA;^ In file included from ../src/better_sqlite3.cpp:4 : In file included from&#xA;./src/better_sqlite3.lzz:11 : In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/node.h:73 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8.h:24 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-array-buffer.h:13 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-object.h:9 :&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-maybe.h:123:67 :&#xA;error : expected '(' for function-style cast or type construction&#xA;template * =&#xA;nullptr>&#xA; ^ In file included from ../src/better_sqlite3.cpp:4 : In file included from&#xA;./src/better_sqlite3.lzz:11 : In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/node.h:73 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8.h:33 :&#xA;In file included from&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-function.h:11 :&#xA;/Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-function-callback.h:151:66 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;kReturnValueDefaultValueIndex - kReturnValueIndex) ;&#xA;^&#xA;, "" /Users/administrator/Library/Caches/node-gyp/20.9.0/include/node/v8-function-callback.h:153:50 :&#xA;warning : static_assert with no message is a C++17 extension&#xA;[-Wc++17-extensions]&#xA;kIsolateIndex - kReturnValueIndex) ;&#xA;^&#xA;, "" ./src/util/macros.lzz:157:21 : error : no member named&#xA;'AccessorSignature' in namespace 'v8'&#xA;v8::AccessorSignature::New(isolate, recv)&#xA; ^ ./src/util/binder.lzz:37:51 : error : no member named 'CreationContext' in 'v8::Object'&#xA;v8::Local ctx = obj->CreationContext() ;&#xA; ^ 22 warnings and 6 errors generated. make : ***&#xA;[Release/obj.target/better_sqlite3/src/better_sqlite3.o] Error 1 rm&#xA;ba23eeee118cd63e16015df367567cb043fed872.intermediate gyp ERR ! build&#xA;error gyp ERR ! stack Error : make failed with exit code : 2 gyp ERR !&#xA;stack at ChildProcess.onExit&#xA;(/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/electron-rebuild/node_modules/node-gyp/lib/build.js:203:23)&#xA;gyp ERR ! stack at ChildProcess.emit (node:events:514:28) gyp ERR !&#xA;stack at ChildProcess._handle.onexit&#xA;(node:internal/child_process:294:12) gyp ERR ! System Darwin 18.7.0 gyp&#xA;ERR ! command "/usr/local/bin/node"&#xA;"/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/.bin/node-gyp"&#xA;"rebuild" "—release" gyp ERR ! cwd&#xA;/Users/administrator/Desktop/Stage-Whisper/electron/node_modules/better-sqlite3

  &#xA;

  &#xA;

  Same goes for the the "poetry install" command in the backend folder :

  &#xA;

  8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/build/onig_sys-3a9a2f947b5ad744/outwarning: variable does not need to be mutable --> tokenizers-lib/src/models/unigram/model.rs:265:21 | 265 |                 let mut target_node = &mut best_path_ends_at[key_pos]; |                     ----^^^^^^^^^^^ |                     | |                     help: remove thismut| = note:#[warn(unused_mut)]` on by default

  &#xA;

  warning : variable does not need to be mutable&#xA;—> tokenizers-lib/src/models/unigram/model.rs:282:21&#xA;|&#xA;282 | let mut target_node = &mut best_path_ends_at[starts_at + mblen] ;&#xA;| ----^^^^^^^^^^^&#xA;| |&#xA;| help : remove this mut

  &#xA;

  warning : variable does not need to be mutable&#xA;—> tokenizers-lib/src/pre_tokenizers/byte_level.rs:200:59&#xA;|&#xA;200 | encoding.process_tokens_with_offsets_mut(|(i, (token, mut offsets))| &#xA;| ----^^^^^^^&#xA;| |&#xA;| help : remove this mut

  &#xA;

  error : casting &T to &mut T is undefined behavior, even if the reference is unused, consider instead using an UnsafeCell&#xA;—> tokenizers-lib/src/models/bpe/trainer.rs:526:47&#xA;|&#xA;522 | let w = &words[*i] as *const _ as *mut _ ;&#xA;| -------------------------------- casting happend here&#xA;...&#xA;526 | let word : &mut Word = &mut (*w) ;&#xA;| ^^^^^^^^^&#xA;|&#xA;= note : #[deny(invalid_reference_casting)] on by default

  &#xA;

  warning : tokenizers (lib) generated 3 warnings&#xA;error : could not compile tokenizers (lib) due to previous error ; 3 warnings emitted

  &#xA;

  Caused by :&#xA;process didn't exit successfully : /Users/administrator/.rustup/toolchains/stable-x86_64-apple-darwin/bin/rustc --crate-name tokenizers --edition=2018 tokenizers-lib/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no --cfg 'feature="cached-path"' --cfg 'feature="clap"' --cfg 'feature="cli"' --cfg 'feature="default"' --cfg 'feature="http"' --cfg 'feature="indicatif"' --cfg 'feature="progressbar"' --cfg 'feature="reqwest"' -C metadata=cb36f9861d265e60 -C extra-filename=-cb36f9861d265e60 --out-dir /private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps -L dependency=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps --extern aho_corasick=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libaho_corasick-021885281f13d108.rmeta --extern cached_path=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libcached_path-767095c4d4a77107.rmeta --extern clap=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libclap-c92d2593d8a75e62.rmeta --extern derive_builder=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libderive_builder-833217c2af636976.dylib --extern dirs=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libdirs-f12e99ecd3a76eae.rmeta --extern esaxx_rs=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libesaxx_rs-b694f04df571686b.rmeta --extern indicatif=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libindicatif-39491a3282a24810.rmeta --extern itertools=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libitertools-b322e49e83853c17.rmeta --extern lazy_static=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/liblazy_static-28a96417d88df3c9.rmeta --extern log=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/liblog-937f94f366843d8a.rmeta --extern macro_rules_attribute=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libmacro_rules_attribute-d4d77bee9330e675.rmeta --extern onig=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libonig-7f9dab4334743bdf.rmeta --extern paste=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libpaste-a36a4a0dbc2ac63f.dylib --extern rand=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/librand-4b1adc86e35ea892.rmeta --extern rayon=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/librayon-d134e48f83d52e6e.rmeta --extern rayon_cond=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/librayon_cond-5715a923c66c54a9.rmeta --extern regex=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libregex-a5c54f2d0034ab98.rmeta --extern regex_syntax=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libregex_syntax-58c405f62323b6ed.rmeta --extern reqwest=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libreqwest-1551c89d20e17f58.rmeta --extern serde=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libserde-f4748cc953dd1338.rmeta --extern serde_json=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libserde_json-5fba404e8440399e.rmeta --extern spm_precompiled=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libspm_precompiled-6bd24072bd3c9d31.rmeta --extern thiserror=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libthiserror-bcbb2769006ee534.rmeta --extern unicode_normalization_alignments=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libunicode_normalization_alignments-658520cf6a5461dc.rmeta --extern unicode_segmentation=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libunicode_segmentation-fffd829ab6256bb0.rmeta --extern unicode_categories=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/deps/libunicode_categories-e3815c3d18c1086b.rmeta -L native=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/build/bzip2-sys-d2cb72d65b178690/out/lib -L native=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/build/zstd-sys-ddff0154a55a136c/out -L native=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/build/esaxx-rs-69d9e34a40d41449/out -L native=/private/var/folders/zc/c2qvlcjd5cgcg5l84484t8vh0000gt/T/tmp2yohvwu_/tokenizers-0.12.1/target/release/build/onig_sys-3a9a2f947b5ad744/out (exit status : 1)&#xA;error : cargo rustc --lib --message-format=json-render-diagnostics --manifest-path Cargo.toml --release -v --features pyo3/extension-module --crate-type cdylib -- -C 'link-args=-undefined dynamic_lookup -Wl,-install_name,@rpath/tokenizers.cpython-311-darwin.so' failed with code 101

  &#xA;

  at /usr/local/lib/python3.11/site-packages/poetry/installation/chef.py:166 in _prepare&#xA;162│&#xA;163│ error = ChefBuildError("\n\n".join(message_parts))&#xA;164│&#xA;165│ if error is not None :&#xA;→ 166│ raise error from None&#xA;167│&#xA;168│ return path&#xA;169│&#xA;170│ def _prepare_sdist(self, archive : Path, destination : Path | None = None) -> Path :

  &#xA;

  Note : This error originates from the build backend, and is likely not a problem with poetry but with tokenizers (0.12.1) not supporting PEP 517 builds. You can verify this by running 'pip wheel —no-cache-dir —use-pep517 "tokenizers (==0.12.1)"'.

  &#xA;

  UPDATE (SOLVED) :

  &#xA;

  &#xA;
  • i found a solution and this worked for me :

  &#xA;

  &#xA;

  "I had the same problem and nothing mentioned here worked for me. Here is what worked for me :

  &#xA;

  **("Didnt do this Part")"Require all dependencies you need in the main.js file that is run by electron."**    


  &#xA;

  What i did was :&#xA;Run npm i -D electron-rebuild to add the electron-rebuild package&#xA;Remove the node-modules folder, as well as the packages-lock.json file.&#xA;Run npm i to install all modules.&#xA;Run ./node_modules/.bin/electron-rebuild (.\node_modules.bin\electron-rebuild.cmd for Windows) to rebuild everything

  &#xA;

  It is very important to run ./node_modules/.bin/electron-rebuild directly after npm i otherwise it did not work on my mac."

  &#xA;

  But now i get following Error, when i upload and transcribe the file :

  &#xA;

  > [ELECTRON] NewEntry: Creating new entry with UUID: XY...&#xA;[ELECTRON] NewEntry: Copying audio file to store...&#xA;[ELECTRON] NewEntry: Audio file copied to store.&#xA;[ELECTRON] NewEntry: Entry added to database!&#xA;[ELECTRON] RunWhisper: Running model with args [&#xA;[ELECTRON]   &#x27;--verbose&#x27;,&#xA;[ELECTRON]   &#x27;true&#x27;,&#xA;[ELECTRON]   &#x27;--output_dir&#x27;,&#xA;[ELECTRON]   &#x27;/Users/administrator/Library/Application Support/stagewhisper/store/whisper/2a07203b-ad88-438c-babf-b600cb76aa1d&#x27;,&#xA;[ELECTRON]   &#x27;--task&#x27;,&#xA;[ELECTRON]   &#x27;translate&#x27;,&#xA;[ELECTRON]   &#x27;--model&#x27;,&#xA;[ELECTRON]   &#x27;base&#x27;,&#xA;[ELECTRON]   &#x27;--device&#x27;,&#xA;[ELECTRON]   &#x27;cpu&#x27;,&#xA;[ELECTRON]   &#x27;--input&#x27;,&#xA;[ELECTRON]   &#x27;/Users/administrator/Library/Application Support/stagewhisper/store/audio/harvard.mp3&#x27;&#xA;[ELECTRON] ]&#xA;[ELECTRON] RunWhisper: Child process closed with code 1&#xA;[ELECTRON] RunWhisper: Error running whisper script!&#xA;[ELECTRON] Error occurred in handler for &#x27;run-whisper&#x27;: Error: Error running whisper script!&#xA;[ELECTRON]     at ChildProcess.<anonymous> (/Users/administrator/Desktop/Stage-Whisper/electron/main/handlers/runWhisper/runWhisper.js:234:31)&#xA;[ELECTRON]     at ChildProcess.emit (node:events:390:28)&#xA;[ELECTRON]     at maybeClose (node:internal/child_process:1064:16)&#xA;[ELECTRON]     at Socket.<anonymous> (node:internal/child_process:450:11)&#xA;[ELECTRON]     at Socket.emit (node:events:390:28)&#xA;[ELECTRON]     at Pipe.<anonymous> (node:net:687:12)&#xA;&#xA; &#xA;</anonymous></anonymous></anonymous>

  &#xA;

• Save video using opencv with H264 codec

  31 octobre 2023, par ldiaz997

  This is beyond me and I don't know what I'm doing wrong. I have read that in order to have my video in h265 codec, I need to build opencv from source. Well, I did that, and I also did it for ffmpeg Docker ffmpeg Compiler. But I'm trying to run my application using docker, and I still can't get over the error :

  &#xA;

  [ERROR:0@93.327] global cap_ffmpeg_impl.hpp:3018 open Could not find encoder for codec_id=27, error: Encoder not found
[ERROR:0@93.327] global cap_ffmpeg_impl.hpp:3093 open VIDEOIO/FFMPEG: Failed to initialize VideoWriter


  &#xA;

  Dockerfile :

  &#xA;

  FROM python:3.10.12-slim-buster

RUN apt-get update

# Set the working directory in the container
WORKDIR /app

# Copy the application code into the container
COPY . .

# Set ffmpeg and ffprobe binary files
RUN mv ffmpeg /usr/local/bin
RUN mv ffprobe /usr/local/bin

# Build opencv from source, to be able to use h264 codec.
RUN apt-get install -y cmake \
    gcc \
    g++ \
    python3-numpy \
    libavcodec-dev \
    libavformat-dev \
    libswscale-dev \
    libgstreamer-plugins-base1.0-dev \
    libgstreamer1.0-dev \
    libpng-dev \
    libjpeg-dev \
    libopenexr-dev \
    libtiff-dev \
    libwebp-dev \
    git

RUN git clone --depth 1 --branch 4.8.0 https://github.com/opencv/opencv.git && \
    git clone --depth 1 --branch 4.8.0 https://github.com/opencv/opencv_contrib.git && \
    cd opencv && \
    mkdir build && \
    cd build && \
    cmake -D OPENCV_EXTRA_MODULES_PATH=/app/opencv_contrib/modules ../ && \
    make -j"$(nproc)" && \
    make install

# Remove opencv github project
RUN rm -r opencv

# Remove opencv_contrib github project
RUN rm -r opencv_contrib

# Prevents Python from writing pyc files to disc
ENV PYTHONDONTWRITEBYTECODE 1

# Prevents Python from buffering stdout and stderr
ENV PYTHONUNBUFFERED 1

# Install python dependencies
RUN pip install --upgrade pip
RUN pip install --no-cache-dir -r requirements.txt

# Install netcat to know when rabbitmq is running
RUN apt-get install -y netcat

# Set execute permissions
RUN chmod +x entrypoint.sh
RUN chmod +x web_start.sh

ENTRYPOINT ["./entrypoint.sh"]


  &#xA;

  I ran the command ./ffmpeg -i 57b3e3a7-ad22-469d-a7ff-cf76ba780664 -vcodec libx264 -acodec aac output.mp4 to test ffmpeg and this was the result.

  &#xA;

  ffmpeg version N-112515-gba6a5e7a3d Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.12) 20160609
  configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-libs=-static --extra-cflags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/root/bin --enable-gpl --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  libavutil      58. 27.100 / 58. 27.100
  libavcodec     60. 30.102 / 60. 30.102
  libavformat    60. 15.101 / 60. 15.101
  libavdevice    60.  2.101 / 60.  2.101
  libavfilter     9. 11.100 /  9. 11.100
  libswscale      7.  4.100 /  7.  4.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '57b3e3a7-ad22-469d-a7ff-cf76ba780664':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2023-10-30T15:34:32.000000Z
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 13 Pro Max
    com.apple.quicktime.software: 16.6
    com.apple.quicktime.creationdate: 2023-10-30T11:34:32-0400
  Duration: 00:00:03.60, start: 0.000000, bitrate: 16264 kb/s
  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080, 16120 kb/s, 29.99 fps, 29.97 tbr, 600 tbn (default)
    Metadata:
      creation_time   : 2023-10-30T15:34:32.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : H.264
    Side data:
      displaymatrix: rotation of -90.00 degrees
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 89 kb/s (default)
    Metadata:
      creation_time   : 2023-10-30T15:34:32.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
  Stream #0:2[0x3](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2023-10-30T15:34:32.000000Z
      handler_name    : Core Media Metadata
  Stream #0:3[0x4](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2023-10-30T15:34:32.000000Z
      handler_name    : Core Media Metadata
  Stream #0:4[0x5](und): Data: none (mebx / 0x7862656D), 34 kb/s (default)
    Metadata:
      creation_time   : 2023-10-30T15:34:32.000000Z
      handler_name    : Core Media Metadata
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x5ae4c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x5ae4c00] profile High, level 4.0
[libx264 @ 0x5ae4c00] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=30 lookahead_threads=5 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'output.mp4':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    com.apple.quicktime.creationdate: 2023-10-30T11:34:32-0400
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 13 Pro Max
    com.apple.quicktime.software: 16.6
    encoder         : Lavf60.15.101
  Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1080x1920, q=2-31, 29.97 fps, 30k tbn (default)
    Metadata:
      creation_time   : 2023-10-30T15:34:32.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : Lavc60.30.102 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
      displaymatrix: rotation of -0.00 degrees
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      creation_time   : 2023-10-30T15:34:32.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
      encoder         : Lavc60.30.102 aac
[out#0/mp4 @ 0x5ae3440] video:2773kB audio:31kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.157082%
frame=  108 fps= 74 q=-1.0 Lsize=    2809kB time=00:00:03.59 bitrate=6393.3kbits/s speed=2.47x    
[libx264 @ 0x5ae4c00] frame I:4     Avg QP:22.27  size: 48408
[libx264 @ 0x5ae4c00] frame P:104   Avg QP:24.58  size: 25440
[libx264 @ 0x5ae4c00] mb I  I16..4: 10.3% 82.9%  6.8%
[libx264 @ 0x5ae4c00] mb P  I16..4:  4.6% 18.1%  0.8%  P16..4: 40.3%  6.9%  4.1%  0.0%  0.0%    skip:25.3%
[libx264 @ 0x5ae4c00] 8x8 transform intra:78.0% inter:85.0%
[libx264 @ 0x5ae4c00] coded y,uvDC,uvAC intra: 44.9% 29.1% 0.1% inter: 22.5% 23.3% 0.0%
[libx264 @ 0x5ae4c00] i16 v,h,dc,p: 17% 49% 14% 19%
[libx264 @ 0x5ae4c00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 25% 37%  3%  3%  5%  3%  2%  4%
[libx264 @ 0x5ae4c00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 30% 17%  3%  4%  8%  3%  2%  3%
[libx264 @ 0x5ae4c00] i8c dc,h,v,p: 67% 20% 12%  0%
[libx264 @ 0x5ae4c00] Weighted P-Frames: Y:1.9% UV:0.0%
[libx264 @ 0x5ae4c00] ref P L0: 61.8% 10.4% 18.3%  9.4%  0.2%
[libx264 @ 0x5ae4c00] kb/s:6303.40
[aac @ 0x68c9880] Qavg: 119.986


  &#xA;

  The resulting video had an h264 codec. In my opinion, the problem is in opencv. Basically this is what I do in my python code :

  &#xA;

  cap = cv2.VideoCapture(video)
shoot_frames = []
while True:
    ret, img = cap.read()
    if not ret:
       break
    if some_condition:
       shoot_frames.append(img)
    if len(shoot_frames) > 41:
       out1 = cv2.VideoWriter(upload_path(name , dir), cv2.VideoWriter_fourcc(*'avc1'), int(fps), (int(width), int(height)), True)
       for shoot_frame in shoot_frames:
           out1.write(shoot_frame)
       out1.release()
       shoot_frames = []


  &#xA;

  Output from print(cv2.getBuildInformation()) :

  &#xA;

  General configuration for OpenCV 4.8.1 =====================================
  Version control:               4.8.1-dirty

  Platform:
    Timestamp:                   2023-09-27T14:20:56Z
    Host:                        Linux 5.15.0-1046-azure x86_64
    CMake:                       3.27.5
    CMake generator:             Unix Makefiles
    CMake build tool:            /bin/gmake
    Configuration:               Release

  CPU/HW features:
    Baseline:                    SSE SSE2 SSE3
      requested:                 SSE3
    Dispatched code generation:  SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
      requested:                 SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
      SSE4_1 (16 files):         + SSSE3 SSE4_1
      SSE4_2 (1 files):          + SSSE3 SSE4_1 POPCNT SSE4_2
      FP16 (0 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
      AVX (7 files):             + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
      AVX2 (35 files):           + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
      AVX512_SKX (5 files):      + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX

  C/C++:
    Built as dynamic libs?:      NO
    C++ standard:                11
    C++ Compiler:                /opt/rh/devtoolset-10/root/usr/bin/c++  (ver 10.2.1)
    C++ flags (Release):         -Wl,-strip-all   -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
    C++ flags (Debug):           -Wl,-strip-all   -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
    C Compiler:                  /opt/rh/devtoolset-10/root/usr/bin/cc
    C flags (Release):           -Wl,-strip-all   -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -Wl,-strip-all   -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
    Linker flags (Release):      -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -L/ffmpeg_build/lib  -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined  
    Linker flags (Debug):        -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -L/ffmpeg_build/lib  -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined  
    ccache:                      YES
    Precompiled headers:         NO
    Extra dependencies:          /lib64/libopenblas.so Qt5::Core Qt5::Gui Qt5::Widgets Qt5::Test Qt5::Concurrent /usr/local/lib/libpng.so /lib64/libz.so dl m pthread rt
    3rdparty dependencies:       libprotobuf ade ittnotify libjpeg-turbo libwebp libtiff libopenjp2 IlmImf quirc ippiw ippicv

  OpenCV modules:
    To be built:                 calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo python3 stitching video videoio
    Disabled:                    world
    Disabled by dependency:      -
    Unavailable:                 java python2 ts
    Applications:                -
    Documentation:               NO
    Non-free algorithms:         NO

  GUI:                           QT5
    QT:                          YES (ver 5.15.0 )
      QT OpenGL support:         NO
    GTK+:                        NO
    VTK support:                 NO

  Media I/O: 
    ZLib:                        /lib64/libz.so (ver 1.2.7)
    JPEG:                        libjpeg-turbo (ver 2.1.3-62)
    WEBP:                        build (ver encoder: 0x020f)
    PNG:                         /usr/local/lib/libpng.so (ver 1.6.40)
    TIFF:                        build (ver 42 - 4.2.0)
    JPEG 2000:                   build (ver 2.5.0)
    OpenEXR:                     build (ver 2.3.0)
    HDR:                         YES
    SUNRASTER:                   YES
    PXM:                         YES
    PFM:                         YES

  Video I/O:
    DC1394:                      NO
    FFMPEG:                      YES
      avcodec:                   YES (59.37.100)
      avformat:                  YES (59.27.100)
      avutil:                    YES (57.28.100)
      swscale:                   YES (6.7.100)
      avresample:                NO
    GStreamer:                   NO
    v4l/v4l2:                    YES (linux/videodev2.h)

  Parallel framework:            pthreads

  Trace:                         YES (with Intel ITT)

  Other third-party libraries:
    Intel IPP:                   2021.8 [2021.8.0]
           at:                   /io/_skbuild/linux-x86_64-3.7/cmake-build/3rdparty/ippicv/ippicv_lnx/icv
    Intel IPP IW:                sources (2021.8.0)
              at:                /io/_skbuild/linux-x86_64-3.7/cmake-build/3rdparty/ippicv/ippicv_lnx/iw
    VA:                          NO
    Lapack:                      YES (/lib64/libopenblas.so)
    Eigen:                       NO
    Custom HAL:                  NO
    Protobuf:                    build (3.19.1)
    Flatbuffers:                 builtin/3rdparty (23.5.9)

  OpenCL:                        YES (no extra features)
    Include path:                /io/opencv/3rdparty/include/opencl/1.2
    Link libraries:              Dynamic load

  Python 3:
    Interpreter:                 /opt/python/cp37-cp37m/bin/python3.7 (ver 3.7.17)
    Libraries:                   libpython3.7m.a (ver 3.7.17)
    numpy:                       /home/ci/.local/lib/python3.7/site-packages/numpy/core/include (ver 1.17.0)
    install path:                python/cv2/python-3

  Python (for build):            /opt/python/cp37-cp37m/bin/python3.7

  Java:                          
    ant:                         NO
    Java:                        NO
    JNI:                         NO
    Java wrappers:               NO
    Java tests:                  NO

  Install to:                    /io/_skbuild/linux-x86_64-3.7/cmake-install
-----------------------------------------------------------------




  &#xA;

  Update

  &#xA;

  I made my docker image more simpler, and therefore my question. Install ffmpeg from the repository :

  &#xA;

  FROM python:3.10.12-slim-buster

RUN apt-get update

# Set the working directory in the container
WORKDIR /app

# Install ffmpeg for opencv
RUN apt-get install -y ffmpeg

# Copy the application code into the container
COPY . .

# Build opencv from source, to be able to use h264 codec.
RUN apt-get install -y cmake \
    gcc \
    g++ \
    python3-numpy \
    libavcodec-dev \
    libavformat-dev \
    libswscale-dev \
    libgstreamer-plugins-base1.0-dev \
    libgstreamer1.0-dev \
    libpng-dev \
    libjpeg-dev \
    libopenexr-dev \
    libtiff-dev \
    libwebp-dev \
    git

RUN git clone --depth 1 --branch 4.8.0 https://github.com/opencv/opencv.git && \
    git clone --depth 1 --branch 4.8.0 https://github.com/opencv/opencv_contrib.git && \
    cd opencv && \
    mkdir build && \
    cd build && \
    cmake -D CMAKE_BUILD_TYPE=Release -D OPENCV_EXTRA_MODULES_PATH=/app/opencv_contrib/modules -D OPENCV_ENABLE_NONFREE=ON ../ && \
    make -j"$(nproc)" && \
    make install

# Remove opencv github project
RUN rm -r opencv

# Remove opencv_contrib github project
RUN rm -r opencv_contrib

# Prevents Python from writing pyc files to disc
ENV PYTHONDONTWRITEBYTECODE 1

# Prevents Python from buffering stdout and stderr
ENV PYTHONUNBUFFERED 1

# Install python dependencies
RUN pip install --upgrade pip
RUN pip install --no-cache-dir -r requirements.txt

# Install netcat to know when rabbitmq is running
RUN apt-get install -y netcat

# Set execute permissions
RUN chmod +x entrypoint.sh
RUN chmod +x web_start.sh

ENTRYPOINT ["./entrypoint.sh"]


  &#xA;

  Run the following commands inside the docker container :

  &#xA;

  $ ffmpeg -version

ffmpeg version 4.1.11-0+deb10u1 Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --prefix=/usr --extra-version=0+deb10u1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil      56. 22.100 / 56. 22.100
libavcodec     58. 35.100 / 58. 35.100
libavformat    58. 20.100 / 58. 20.100
libavdevice    58.  5.100 / 58.  5.100
libavfilter     7. 40.101 /  7. 40.101
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  3.100 /  5.  3.100
libswresample   3.  3.100 /  3.  3.100
libpostproc    55.  3.100 / 55.  3.100


  &#xA;

  $ ffmpeg -i cf91f302-c357-49ba-b59c-bcfb8b7f4866 -vcodec libx264 -f mp4 output.mp4

ffmpeg version 4.1.11-0+deb10u1 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --prefix=/usr --extra-version=0+deb10u1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cf91f302-c357-49ba-b59c-bcfb8b7f4866':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2023-10-31T10:38:42.000000Z
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 13 Pro Max
    com.apple.quicktime.software: 16.6
    com.apple.quicktime.creationdate: 2023-10-31T06:38:42-0400
  Duration: 00:00:04.23, start: 0.000000, bitrate: 15915 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 15767 kb/s, 30 fps, 30 tbr, 600 tbn, 1200 tbc (default)
    Metadata:
      rotate          : 90
      creation_time   : 2023-10-31T10:38:42.000000Z
      handler_name    : Core Media Video
      encoder         : H.264
    Side data:
      displaymatrix: rotation of -90.00 degrees
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 89 kb/s (default)
    Metadata:
      creation_time   : 2023-10-31T10:38:42.000000Z
      handler_name    : Core Media Audio
    Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2023-10-31T10:38:42.000000Z
      handler_name    : Core Media Metadata
    Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2023-10-31T10:38:42.000000Z
      handler_name    : Core Media Metadata
    Stream #0:4(und): Data: none (mebx / 0x7862656D), 34 kb/s (default)
    Metadata:
      creation_time   : 2023-10-31T10:38:42.000000Z
      handler_name    : Core Media Metadata
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x55db965ee980] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x55db965ee980] profile High, level 4.0
[libx264 @ 0x55db965ee980] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'output.mp4':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    com.apple.quicktime.creationdate: 2023-10-31T06:38:42-0400
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 13 Pro Max
    com.apple.quicktime.software: 16.6
    encoder         : Lavf58.20.100
    Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1080x1920, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    Metadata:
      encoder         : Lavc58.35.100 libx264
      creation_time   : 2023-10-31T10:38:42.000000Z
      handler_name    : Core Media Video
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
      displaymatrix: rotation of -0.00 degrees
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      creation_time   : 2023-10-31T10:38:42.000000Z
      handler_name    : Core Media Audio
      encoder         : Lavc58.35.100 aac
frame=  127 fps= 27 q=-1.0 Lsize=    2005kB time=00:00:04.24 bitrate=3866.2kbits/s speed=0.909x    
video:1964kB audio:36kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.282549%
[libx264 @ 0x55db965ee980] frame I:1     Avg QP:21.43  size: 36791
[libx264 @ 0x55db965ee980] frame P:59    Avg QP:23.61  size: 22380
[libx264 @ 0x55db965ee980] frame B:67    Avg QP:24.20  size:  9743
[libx264 @ 0x55db965ee980] consecutive B-frames: 20.5% 22.0% 16.5% 40.9%
[libx264 @ 0x55db965ee980] mb I  I16..4: 29.4% 58.6% 11.9%
[libx264 @ 0x55db965ee980] mb P  I16..4: 15.0% 21.8%  1.3%  P16..4: 26.1%  7.5%  3.1%  0.0%  0.0%    skip:25.2%
[libx264 @ 0x55db965ee980] mb B  I16..4:  1.9%  1.7%  0.1%  B16..8: 36.3%  3.6%  0.5%  direct: 3.9%  skip:52.1%  L0:42.9% L1:52.1% BI: 5.0%
[libx264 @ 0x55db965ee980] 8x8 transform intra:56.2% inter:86.6%
[libx264 @ 0x55db965ee980] coded y,uvDC,uvAC intra: 19.5% 27.3% 2.1% inter: 11.7% 18.9% 0.1%
[libx264 @ 0x55db965ee980] i16 v,h,dc,p: 25% 54%  8% 12%
[libx264 @ 0x55db965ee980] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 25% 44%  1%  2%  2%  2%  1%  1%
[libx264 @ 0x55db965ee980] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 45% 13%  2%  7%  6%  6%  3%  3%
[libx264 @ 0x55db965ee980] i8c dc,h,v,p: 62% 27% 10%  1%
[libx264 @ 0x55db965ee980] Weighted P-Frames: Y:3.4% UV:0.0%
[libx264 @ 0x55db965ee980] ref P L0: 65.2% 18.0% 12.2%  4.6%  0.1%
[libx264 @ 0x55db965ee980] ref B L0: 89.1%  9.3%  1.6%
[libx264 @ 0x55db965ee980] ref B L1: 97.2%  2.8%
[libx264 @ 0x55db965ee980] kb/s:3798.37
[aac @ 0x55db965edf00] Qavg: 125.454


  &#xA;

  The errors persist.

  &#xA;

  >>> import cv2
>>> out = cv2.VideoWriter("./out.mp4", cv2.VideoWriter_fourcc(*'avc1'), 30, (800, 600), True)
[ERROR:0@91.872] global cap_ffmpeg_impl.hpp:3018 open Could not find encoder for codec_id=27, error: Encoder not found
[ERROR:0@91.872] global cap_ffmpeg_impl.hpp:3093 open VIDEOIO/FFMPEG: Failed to initialize VideoWriter


  &#xA;

  Could someone please tell me what I'm doing wrong ?

  &#xA;