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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
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Autres articles (111)
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MediaSPIP 0.1 Beta version
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Sur d’autres sites (10066)
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Conversion Rate Optimisation Statistics for 2024 and Beyond
21 novembre 2023, par Erin — Analytics TipsDriving traffic to your website is only half the battle. The real challenge — once you’ve used a web analytics solution to understand how users behave — is turning more of those visitors into customers.
That doesn’t happen by accident. You need to employ conversion rate optimisation strategies and tools to see even a small lift in conversion rates. The good news is that it doesn’t take much to see massive results. Raising your conversion rate from 1% to 3% can triple your revenue.
In even better news, you don’t have to guess at the best ways to improve your conversion rate. We’ve done the hard work and collected the most recent and relevant conversion rate optimisation statistics to help you.
General conversion rate optimisation statistics
It appears the popularity of conversion rate optimisation is soaring. According to data collected by Google Trends, there were more people searching for the term “conversion rate optimization” in September 2023 than ever before.
As you can see from the chart below, the term’s popularity is on a clear upward trajectory, meaning even more people could be searching for it in the near future. (Source)
Do you want to know what the average landing page conversion rate is ? According to research by WordStream, the average website conversion rate across all industries is 2.35%.
That doesn’t paint the whole picture, however. Better-performing websites have significantly higher conversion rates. The top 25% of websites across all industries convert at a rate of 5.31% or higher. (Source)
Let’s break things down by industry now. The Unbounce Conversion Benchmark Report offers a detailed analysis of how landing pages convert across various industries.
First, we have the Finance and Insurance industry, which boasts a conversion rate of 15.6%.
On the other end, agencies appears to be one of the worst-performing. Agencies’ landing pages convert at a rate of 8.8%. (Source)
What about the size of the conversion rate optimisation industry ? Given the growth in popularity of the term in Google, surely the industry is experiencing growth, right ?
You’d be correct in that assumption. The conversion rate optimisation software market was valued at $771.2 million in 2018 and is projected to reach $1.932 billion by 2026 — a compound annual growth rate (CAGR) of 9.6%.
Statistics on the importance of conversion rate optimisation
If you’re reading this article, you probably think conversion rate optimisation is pretty important. But do you know its importance and where it ranks in your competitors’ priorities ? Read on to find out.
Bounce rate — the number of people who leave your website without visiting another page or taking action — is the scourge of conversion rate optimisation efforts. Every time someone bounces from your site, you lose the chance to convert them.
The questions, then, are : how often do people bounce on average and how does your bounce rate compare ?
Siege Media analysed over 1.3 billion sessions from a range of traffic sources, including 700 million bounces, to calculate an average bounce rate of 50.9%. (Source)
Bounce rates vary massively from website to website and industry to industry, however. Siege Media’s study unveils an array of average bounce rates across industries :
- Travel – 82.58%
- B2B – 65.17%
- Lifestyle – 64.26%
- Business and Finance – 63.51%
- Healthcare – 59.50%
- eCommerce – 54.54%
- Insurance – 45.96%
- Real Estate – 40.78%
It won’t come as much of a surprise to learn that marketers are determined to reduce bounce rates and improve lead conversion. Today’s marketers are highly performance-based. When asked about their priorities for the coming year, 79% of marketers said their priority was generating quality qualified leads — the most popular answer in the survey. (Source)
Just because it is a priority for marketers doesn’t mean that everyone has their stuff together. If you have a conversion rate optimisation process in place, you’re in the minority. According to research by HubSpot, less than one in five marketers (17%) use landing page A/B tests to improve their conversion rates. (Source)
When it comes to personalisation strategies – a common and effective tool to increase conversion rates — the picture isn’t any rosier. Research by Salesforce found just over one-quarter of markets are confident their organisation has a successful strategy for personalisation. (Source)
Conversion rate optimisation tactics statistics
There are hundreds of ways to improve your website’s conversion rates. From changing the color of buttons to the structure of your landing page to your entire conversion funnel, in this section, we’ll look at the most important statistics you need to know when choosing tactics and building your own CRO experiments.
If you are looking for the best method to convert visitors, then email lead generation forms are the way to go, according to HubSpot. This inoffensive and low-barrier data collection method boasts a 15% conversion rate, according to the marketing automation company’s research. (Source)
Where possible, make your call-to-actions personalised. Marketing personalisation, whether through behavioral segmentation or another strategy, is an incredibly powerful way of showing users that you care about their specific needs. It’s no great surprise, then, that HubSpot found personalised calls-to-actions perform a whopping 202% better than basic CTAs. (Source)
If you want to boost conversion rates, then it’s just as important to focus on quantity as well as quality. Yes, a great-looking, well-written landing page will go a long way to improving your conversion rate, but having a dozen of these pages will do even more.
Research by HubSpot found companies see a 55% increase in leads when they increase the number of landing pages from 10 to 15. What’s more, companies with over 40 landing pages increase conversion by more than 500%. (Source)
User-generated content (UGC) should also be high on your priority list to boost conversion rates. Several statistics show how powerful, impactful and persuasive social proof like user reviews can be.
Research shows that visitors who scroll to the point where they encounter user-generated content increase the likelihood they convert by a staggering 102.4%. (Source)
Other trust signs can be just as impactful. Research by Trustpilot found that the following four trust signals make consumers more likely to make a purchase when shown on a product page :
- Positive star rating and reviews (85% more likely to make a purchase)
- Positive star rating (78%)
- Positive customer testimonials (82%)
- Approved or authorised seller badge (76%)
(Source)
Showing ratings and reviews has also increased conversion rates by 38% on home appliances and electronics stores. (Source)
And no wonder, given that consumers are more likely to buy from brands they trust than brands they love, according to the 2021 Edelman Trust Barometer Special Report. (Source)
A lack of trust is also one of the top four reasons consumers abandon their shopping cart at checkout. (Source)
Traffic source conversion rate statistics
What type of traffic works the best when it comes to conversions, or how often you should be signing up users to your mailing list ? Let’s look at the stats to find out.
Email opt-ins are one of the most popular methods for collecting customer information — and an area where digital marketers spend a lot of time and effort when it comes to conversion rate optimisation. So, what is the average conversion rate of an email opt-in box ?
According to research by Sumo — based on 3.2 billion users who have seen their opt-in boxes — the average email opt-in rate is 1.95%. (Source)
Search advertising is an effective way of driving website traffic, but how often do those users click on these ads ?
WordStream’s research puts the average conversion of search advertising for all industries at 6.11%. (Source)
The arts and entertainment industry enjoys the highest clickthrough rates (11.78%), followed by sports and recreation (10.53%) and travel (10.03%). Legal services and the home improvement industry have the lowest clickthrough rates at 4.76% and 4.8%, respectively.
(Source) If you’re spending money on Google ads, then you’d better hope a significant amount of users convert after clicking them.
Unfortunately, conversion rates from Google ads decreased year-on-year for most industries in 2023, according to research by WordStream — in some cases, those decreases were significant. The only two industries that didn’t see a decrease in conversion rates were beauty and personal care and education and instruction. (Source)
The average conversion rate for search ads across all industries is 7.04%. The animal and pet niche has the highest conversion rate (13.41%), while apparel, fashion and jewelry have the lowest conversion rate (1.57%). (Source)
What about other forms of traffic ? Well, there’s good reason to try running interstitial ads on smartphone apps if you aren’t already. Ads on the iOS app see a 14.3 percent conversion rate on average. (Source)
E-commerce conversion rate optimisation statistics (400 words)
Conversion rate optimisation can be the difference between a store that sets new annual sales records and one struggling to get by.
The good news is that the conversion rate among US shoppers was the highest it’s ever been in 2021, with users converting at 2.6%. (Source)
If you have a Shopify store, then you may find conversion rates a little lower. A survey by Littledata found the average conversion rate for Shopify was 1.4% in September 2022. (Source)
What about specific e-commerce categories ? According to data provided by Dynamic Yield, the consumer goods category converted at the highest rate in September 2023 (4.22%), a spike of 0.34% from August.
Generally, the food and beverage niche boasts the highest conversion rate (4.87%), and the home and furniture niche has the lowest conversion rate (1.44%). (Source)
If you’re serious about driving sales, don’t focus on mobile devices at the expense of consumers who shop on desktop devices. The conversion rate among US shoppers tends to be higher for desktop users than for mobile users.
In the second quarter of 2022, for instance, desktop shoppers converted at a rate of 3% on average compared to smartphone users who converted at an average rate of 2%. (Source)
Increase your conversions with Matomo
Conversion rate optimisation can help you grow your subscriber list, build your customer base and increase your revenue. Now, it’s time to put what you’ve learned into practice.
Use the advice above to guide your experiments and track everything with Matomo. Achieve unparalleled data accuracy while harnessing an all-in-one solution packed with essential conversion optimisation features, including Heatmaps, Session Recordings and A/B Testing. Matomo makes it easier than ever to analyse conversion-focused experiments.
Get more from your conversion rate optimisations by trying Matomo free for 21 days. No credit card required.
-
MOV to ACVHD conversion via Spring Boot and FFmpeg leads to file system error
31 décembre 2024, par epicUsernameI am experiencing an issue on a personal project that seeks to convert HEIC to JPG files and MOV files to AVCHD format. The HEIC to JPG conversion works, but the MOV to AVCHD does not, which is where my problems lie.


The intent is to do this with Spring Boot and FFmpeg, using a simple interface done in WindowBuilder.


The relevant bits are the pom file :


<dependencies>
 
 
 <dependency>
 <groupid>jmagick</groupid>
 <artifactid>jmagick</artifactid>
 <version>6.6.9</version>
 </dependency>

 
 <dependency>
 <groupid>net.java.dev.jna</groupid>
 <artifactid>jna</artifactid>
 <version>5.7.0</version> 
 </dependency>
 <dependency>
 <groupid>net.java.dev.jna</groupid>
 <artifactid>jna-platform</artifactid>
 <version>5.7.0</version>
 </dependency>
 
 


 <dependency>
 <groupid>org.bytedeco</groupid>
 <artifactid>ffmpeg</artifactid>
 <version>7.1-1.5.11</version>
 </dependency>
 <dependency>
 <groupid>org.bytedeco</groupid>
 <artifactid>javacv</artifactid>
 <version>1.5.11</version>
 </dependency>
 <dependency>
 <groupid>org.bytedeco</groupid>
 <artifactid>ffmpeg-platform</artifactid>
 <version>7.1-1.5.11</version>
 </dependency>
 
 <dependency>
 <groupid>org.bytedeco</groupid>
 <artifactid>javacpp</artifactid>
 <version>1.5.11</version>
 </dependency>
 </dependencies>



and the main file with the event handling for the application, based on the interface :


package home.multimeida.mmconverter;

imports...

public class MMConverterInterface extends JFrame {

 public static void main(String[] args) {
 
 
 try {
 System.setProperty("jna.library.path", "absolute/path/to/gstreamer/bin");
 // Gst.init("GStreamer Test");
 System.out.println("GStreamer initialized successfully.");
 } catch (Exception e) {
 e.printStackTrace();
 System.out.println("Failed to initialize GStreamer.");
 }
 EventQueue.invokeLater(new Runnable() {
 public void run() {
 try {
 MMConverterInterface frame = new MMConverterInterface();
 frame.setVisible(true);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
 });
 }

 /**
 * Create the frame.
 */
 public MMConverterInterface() {
 
 // convert button
 
 btnConvert.addActionListener(e -> {
 
 try {
 
 if (sourceFileLabel.getText().equals("No file chosen...") || destinationFolderLabel.getText().equals("No folder selected...")) {
 JOptionPane.showMessageDialog(null, "Please select both an input file and a save location.", "Validation Error", JOptionPane.WARNING_MESSAGE);
 return;
 }
 
 File sourceFile = new File(sourceFileLabel.getText());
 File destinationFile;
 
 if (rdbtnNewRadioButton.isSelected()) {
 
 System.out.println("Converting HEIC to JPG...");
 
 String outputFileName = sourceFile.getName().replaceFirst("[.][^.]+$", ".jpg");
 
 // Call your conversion logic here
 
 destinationFile = new File(destinationFolderLabel.getText(), outputFileName);
 
 convertHeicToJpg(sourceFile, destinationFile);
 
 } else if (rdbtnNewRadioButton_1.isSelected()) {
 
 if (sourceFileLabel.getText().equals("No file chosen...") || destinationFolderLabel.getText().equals("No folder selected...")) {
 JOptionPane.showMessageDialog(null, "Please select both an input file and a save location.", "Validation Error", JOptionPane.WARNING_MESSAGE);
 return;
 }
 
 // Validate source file
 if (!sourceFile.exists() || !sourceFile.canRead()) {
 JOptionPane.showMessageDialog(null, "Source file does not exist or is not readable.", "File Error", JOptionPane.ERROR_MESSAGE);
 return;
 }
 
 // Validate destination folder
 String destinationPath = destinationFolderLabel.getText();
 if (destinationPath == null || destinationPath.isEmpty() || !(new File(destinationPath).isDirectory())) {
 JOptionPane.showMessageDialog(null, "Invalid destination folder.", "File Error", JOptionPane.ERROR_MESSAGE);
 return;
 }
 
 System.out.println("Converting MOV to AVCHD...");
 
 String currentDate = new SimpleDateFormat("yyyyMMdd").format(new Date());

 // Extract the file name without the extension
 String baseName = sourceFile.getName().replaceFirst("[.][^.]+$", "");

 // Sanitize the base name (replace invalid characters with '_')
 baseName = baseName.replaceAll("[^a-zA-Z0-9-_]", "_");
 
 String sanitizedFileName = baseName + "_" + currentDate;
 sanitizedFileName = sanitizedFileName.replaceAll("[^a-zA-Z0-9._-]", "_"); // Allow alphanumeric, '-', '_', and '.'

 destinationFile = new File(destinationPath, sanitizedFileName);
 
 
 /*
 // Ensure the destination file is writable
 if (!destinationFile.canWrite()) {
 JOptionPane.showMessageDialog(null, "Output file is not writable.", "File Error", JOptionPane.ERROR_MESSAGE);
 return;
 }
 */
 

 convertMovToAvchd(sourceFile, destinationFile);
 
 } else {
 
 JOptionPane.showMessageDialog(null, "Please select a conversion type.");
 
 }
 
 } catch (Exception ex) {
 
 JOptionPane.showMessageDialog(null, "Error: " + ex.getMessage(), "Conversion Error", JOptionPane.ERROR_MESSAGE);
 ex.printStackTrace();
 }
 
 
 });
 
 // cancel button:
 
 btnCancel.addActionListener(e -> {
 System.out.println("Operation canceled.");
 System.exit(0); // Close the application
 });

 }
 
 public void convertMovToAvchd(File sourceFile, File destinationFile) {
 avutil.av_log_set_level(avutil.AV_LOG_DEBUG);
 
 

 AVFormatContext inputFormatContext = null;
 AVFormatContext outputFormatContext = new AVFormatContext(null);
 AVCodecContext inputCodecContext = null;
 AVCodecContext outputCodecContext = null;

 try {
 // Validate input file
 if (!sourceFile.exists() || !sourceFile.canRead()) {
 System.out.println("Source file does not exist or is not readable: " + sourceFile.getAbsolutePath());
 return;
 }
 
 // Validate output file path using the validateFileCreation method
 if (!validateFileCreation(destinationFile)) {
 return; // Exit if destination file validation fails
 }

 // Validate output file path
 if (destinationFile.getParentFile() == null || !destinationFile.getParentFile().exists()) {
 System.out.println("Output directory does not exist: " + destinationFile.getParentFile());
 return;
 }
 if (!destinationFile.getParentFile().canWrite()) {
 System.out.println("Output directory is not writable: " + destinationFile.getParentFile());
 return;
 }

 // Open input file
 inputFormatContext = avformat.avformat_alloc_context();
 if (avformat.avformat_open_input(inputFormatContext, sourceFile.getAbsolutePath(), null, null) < 0) {
 System.out.println("Failed to open input file: " + sourceFile.getAbsolutePath());
 return;
 }

 // Find stream information
 if (avformat.avformat_find_stream_info(inputFormatContext, (PointerPointer) null) < 0) {
 System.out.println("Failed to retrieve input stream information.");
 return;
 }

 // Find video stream
 int videoStreamIndex = avformat.av_find_best_stream(inputFormatContext, avutil.AVMEDIA_TYPE_VIDEO, -1, -1, (AVCodec) null, 0);
 if (videoStreamIndex < 0) {
 System.out.println("Failed to find video stream in input file.");
 return;
 }

 // Initialize input codec context
 inputCodecContext = avcodec.avcodec_alloc_context3(null);
 avcodec.avcodec_parameters_to_context(inputCodecContext, inputFormatContext.streams(videoStreamIndex).codecpar());

 AVCodec decoder = avcodec.avcodec_find_decoder(inputCodecContext.codec_id());
 if (decoder == null || avcodec.avcodec_open2(inputCodecContext, decoder, (PointerPointer) null) < 0) {
 System.out.println("Failed to open video decoder.");
 return;
 }

 // Allocate output format context
 if (avformat.avformat_alloc_output_context2(outputFormatContext, null, "mpegts", destinationFile.getAbsolutePath()) < 0) {
 System.out.println("Failed to allocate output format context.");
 return;
 }

 // Initialize output codec
 AVCodec encoder = avcodec.avcodec_find_encoder_by_name("mpeg2video");
 if (encoder == null) {
 System.out.println("Failed to find MPEG2 video encoder.");
 return;
 }

 outputCodecContext = avcodec.avcodec_alloc_context3(encoder);
 if (outputCodecContext == null) {
 System.out.println("Failed to allocate output codec context.");
 return;
 }
 
 if ((outputFormatContext.oformat().flags() & avformat.AVFMT_GLOBALHEADER) != 0) {
 outputCodecContext.flags(outputCodecContext.flags() | avcodec.AV_CODEC_FLAG_GLOBAL_HEADER);
 }


 //outputCodecContext.codec_id(avcodec.AV_CODEC_ID_MPEG2VIDEO);
 outputCodecContext.codec_id(encoder.id());
 outputCodecContext.codec_type(avutil.AVMEDIA_TYPE_VIDEO);
 outputCodecContext.width(1920);
 outputCodecContext.height(1080);
 outputCodecContext.pix_fmt(avutil.AV_PIX_FMT_YUV420P);
 outputCodecContext.time_base(avutil.av_make_q(1, 25));
 outputCodecContext.bit_rate(4000000);
 outputCodecContext.gop_size(12);

 if ((outputFormatContext.oformat().flags() & avformat.AVFMT_GLOBALHEADER) != 0) {
 outputCodecContext.flags(outputCodecContext.flags() | avcodec.AV_CODEC_FLAG_GLOBAL_HEADER);
 }

 
 
 if (avcodec.avcodec_open2(outputCodecContext, encoder, (PointerPointer) null) < 0) {
 System.out.println("Failed to open video encoder.");
 return;
 }

 // Create output stream
 AVStream videoStream = avformat.avformat_new_stream(outputFormatContext, encoder);
 if (videoStream == null) {
 System.out.println("Failed to create video stream.");
 return;
 }

 avcodec.avcodec_parameters_from_context(videoStream.codecpar(), outputCodecContext);
 
 System.out.println("Destination file path before trying to open the file is: " + destinationFile);

 if ((outputFormatContext.oformat().flags() & avformat.AVFMT_NOFILE) == 0) {
 // Ensure the output path has the correct extension
 String outputPath = destinationFile.getAbsolutePath().replace("\\", "/") + ".avchd";
 System.out.println("Normalized output path: " + outputPath);

 // Try opening the output file
 int ret = avformat.avio_open(outputFormatContext.pb(), outputPath, avformat.AVIO_FLAG_WRITE);
 if (ret < 0) {
 BytePointer errorBuffer = new BytePointer(avutil.AV_ERROR_MAX_STRING_SIZE);
 avutil.av_strerror(ret, errorBuffer, errorBuffer.capacity());
 System.out.println("Failed to open output file: " + errorBuffer.getString());
 return;
 }
 }


 // Write header
 if (avformat.avformat_write_header(outputFormatContext, (PointerPointer) null) < 0) {
 System.out.println("Failed to write header to output file.");
 return;
 }


 // Packet processing loop
 AVPacket packet = new AVPacket();
 while (avformat.av_read_frame(inputFormatContext, packet) >= 0) {
 if (packet.stream_index() == videoStreamIndex) {
 if (avcodec.avcodec_send_packet(inputCodecContext, packet) >= 0) {
 AVFrame frame = avutil.av_frame_alloc();
 while (avcodec.avcodec_receive_frame(inputCodecContext, frame) >= 0) {
 if (avcodec.avcodec_send_frame(outputCodecContext, frame) >= 0) {
 AVPacket encodedPacket = new AVPacket();
 while (avcodec.avcodec_receive_packet(outputCodecContext, encodedPacket) >= 0) {
 encodedPacket.stream_index(videoStream.index());
 avformat.av_interleaved_write_frame(outputFormatContext, encodedPacket);
 avcodec.av_packet_unref(encodedPacket);
 }
 }
 avutil.av_frame_unref(frame);
 }
 avutil.av_frame_free(frame);
 }
 }
 avcodec.av_packet_unref(packet);
 }

 // Write trailer
 avformat.av_write_trailer(outputFormatContext);
 System.out.println("Conversion completed successfully.");
 
 if (avcodec.avcodec_send_frame(outputCodecContext, null) >= 0) {
 AVPacket encodedPacket = new AVPacket();
 while (avcodec.avcodec_receive_packet(outputCodecContext, encodedPacket) >= 0) {
 encodedPacket.stream_index(videoStream.index());
 avformat.av_interleaved_write_frame(outputFormatContext, encodedPacket);
 avcodec.av_packet_unref(encodedPacket);
 }
 }

 } catch (Exception e) {
 e.printStackTrace();
 } finally {
 // Cleanup
 avcodec.avcodec_free_context(inputCodecContext);
 avcodec.avcodec_free_context(outputCodecContext);
 avformat.avformat_close_input(inputFormatContext);

 if (outputFormatContext != null && outputFormatContext.pb() != null) {
 avformat.avio_closep(outputFormatContext.pb());
 }
 avformat.avformat_free_context(outputFormatContext);
 }
 }
 
 private boolean validateFileCreation(File destinationFile) {
 // Check if the parent directory exists and is writable
 File parentDir = destinationFile.getParentFile();
 if (parentDir == null || !parentDir.exists()) {
 System.out.println("Parent directory does not exist: " + parentDir);
 return false;
 }
 if (!parentDir.canWrite()) {
 System.out.println("Cannot write to parent directory: " + parentDir);
 return false;
 }

 // Check if the file exists and is writable
 if (destinationFile.exists()) {
 if (!destinationFile.canWrite()) {
 System.out.println("Destination file is not writable: " + destinationFile);
 return false;
 }
 } else {
 // If the file doesn't exist, try to create it to verify writability
 try {
 if (!destinationFile.createNewFile()) {
 System.out.println("Unable to create destination file: " + destinationFile);
 return false;
 }
 // Delete the file after successful creation to avoid residual files
 destinationFile.delete();
 } catch (IOException e) {
 System.out.println("File creation failed: " + e.getMessage());
 return false;
 }
 }

 return true;
 }
 
}




A few caveats :


- 

-
I did explore FFmpeg and GStreamer for this project. GStreamer was inconclusive, with available version for it that were too old for use with my current state of STS4.27 and Java 17, even if this version of Java is under long-term support...


-
I've used AI to tell me about the options and suggest ways to build this thing, since multimedia handling is very far away from my skillset. I don't have a good conceptual grasp of video formats and how they transfrom from one to another.








The issue, as I have identified it, occurs at these lines :


// Ensure the destination file is writable
 if (!destinationFile.canWrite()) {
 JOptionPane.showMessageDialog(null, "Output file is not writable.", "File Error", JOptionPane.ERROR_MESSAGE);
 return;
 }


^^ And this, while temporarily commented out for testing, it meant to compensate for an issue that occurs here in the conversion function :


if ((outputFormatContext.oformat().flags() & avformat.AVFMT_NOFILE) == 0) {
 // Ensure the output path has the correct extension
 String outputPath = destinationFile.getAbsolutePath().replace("\\", "/") + ".avchd";
 System.out.println("Normalized output path: " + outputPath);

 // Try opening the output file
 int ret = avformat.avio_open(outputFormatContext.pb(), outputPath, avformat.AVIO_FLAG_WRITE);
 if (ret < 0) {
 BytePointer errorBuffer = new BytePointer(avutil.AV_ERROR_MAX_STRING_SIZE);
 avutil.av_strerror(ret, errorBuffer, errorBuffer.capacity());
 System.out.println("Failed to open output file: " + errorBuffer.getString());
 return;
 }
 }


The idea here is that the avio_open() function requires the use of the a valid file path that it can open to be able to write it.


Padadoxically, the file conversion seems to work, but the project crashes with a fatal error in the console :


Selected file: E:\TestConveresions\sample_960x540.mov
Save location: E:\TestConveresions
Converting MOV to AVCHD...
Destination file path before trying to open the file is: E:\TestConveresions\sample_960x540_20241231
Normalized output path: E:/TestConveresions/sample_960x540_20241231.avchd
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffcffb0868b, pid=11020, tid=14436
#
# JRE version: OpenJDK Runtime Environment Temurin-21.0.5+11 (21.0.5+11) (build 21.0.5+11-LTS)
# Java VM: OpenJDK 64-Bit Server VM Temurin-21.0.5+11 (21.0.5+11-LTS, mixed mode, emulated-client, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, windows-amd64)
# Problematic frame:
# C 0x00007ffcffb0868b
#
# No core dump will be written. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# E:\STS4 Workspace\MMConverter\hs_err_pid11020.log
[80.882s][warning][os] Loading hsdis library failed
#
# If you would like to submit a bug report, please visit:
# https://github.com/adoptium/adoptium-support/issues
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
[AVFormatContext @ 000002528adcea40] Opening 'E:\TestConveresions\sample_960x540.mov' for reading
[file @ 000002528ae51c40] Setting default whitelist 'file,crypto,data'
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] ISO: File Type Major Brand: qt 
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] Unknown dref type 0x206c7275 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] Processing st: 0, edit list 0 - media time: 2002, duration: 400410
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] Offset DTS by 2002 to make first pts zero.
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] Setting codecpar->delay to 2 for stream st: 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] Before avformat_find_stream_info() pos: 1320742 bytes read:38225 seeks:1 nb_streams:1
[h264 @ 000002528ae62780] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 000002528ae62780] Decoding VUI
[h264 @ 000002528ae62780] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 000002528ae62780] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 000002528ae62780] Decoding VUI
[h264 @ 000002528ae62780] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 000002528ae62780] nal_unit_type: 6(SEI), nal_ref_idc: 0
[h264 @ 000002528ae62780] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 000002528ae62780] Format yuv420p chosen by get_format().
[h264 @ 000002528ae62780] Reinit context to 960x544, pix_fmt: yuv420p
[h264 @ 000002528ae62780] no picture 
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] All info found
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002528adcea40] After avformat_find_stream_info() pos: 51943 bytes read:90132 seeks:2 frames:1
[h264 @ 000002528ae62780] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 000002528ae62780] Decoding VUI
[h264 @ 000002528ae62780] nal_unit_type: 8(PPS), nal_ref_idc: 3
[mpeg2video @ 000002528ae8e700] intra_quant_bias = 96 inter_quant_bias = 0



If I refer to the error log, I get this. It is partial, as I'm not sure SO will take all of it (quite long), but still might have enough to be relevant :


Host: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 8 cores, 31G, Windows 11 , 64 bit Build 26100 (10.0.26100.2454)


--------------- T H R E A D ---------------

Current thread (0x00000252d030b340): JavaThread "AWT-EventQueue-0" [_thread_in_native, id=14436, stack(0x000000a4e2b00000,0x000000a4e2c00000) (1024K)]

Stack: [0x000000a4e2b00000,0x000000a4e2c00000], sp=0x000000a4e2bfdf30, free space=1015k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C 0x00007ffcffb0868b

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.bytedeco.ffmpeg.global.avformat.avio_open(Lorg/bytedeco/ffmpeg/avformat/AVIOContext;Ljava/lang/String;I)I+0
j home.multimeida.mmconverter.MMConverterInterface.convertMovToAvchd(Ljava/io/File;Ljava/io/File;)V+1120
j home.multimeida.mmconverter.MMConverterInterface.lambda$2(Ljavax/swing/JRadioButton;Ljavax/swing/JRadioButton;Ljava/awt/event/ActionEvent;)V+347
j home.multimeida.mmconverter.MMConverterInterface$$Lambda+0x000002528c0c7778.actionPerformed(Ljava/awt/event/ActionEvent;)V+13
j javax.swing.AbstractButton.fireActionPerformed(Ljava/awt/event/ActionEvent;)V+84 java.desktop@21.0.5
j javax.swing.AbstractButton$Handler.actionPerformed(Ljava/awt/event/ActionEvent;)V+5 java.desktop@21.0.5
j javax.swing.DefaultButtonModel.fireActionPerformed(Ljava/awt/event/ActionEvent;)V+34 java.desktop@21.0.5
j javax.swing.DefaultButtonModel.setPressed(Z)V+117 java.desktop@21.0.5
j javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Ljava/awt/event/MouseEvent;)V+35 java.desktop@21.0.5
j java.awt.Component.processMouseEvent(Ljava/awt/event/MouseEvent;)V+64 java.desktop@21.0.5
j javax.swing.JComponent.processMouseEvent(Ljava/awt/event/MouseEvent;)V+23 java.desktop@21.0.5
J 2581 c1 java.awt.Component.processEvent(Ljava/awt/AWTEvent;)V java.desktop@21.0.5 (220 bytes) @ 0x00000252fa62719c [0x00000252fa627020+0x000000000000017c]
J 2580 c1 java.awt.Container.processEvent(Ljava/awt/AWTEvent;)V java.desktop@21.0.5 (22 bytes) @ 0x00000252fa627d9c [0x00000252fa627cc0+0x00000000000000dc]
J 2406 c1 java.awt.Component.dispatchEventImpl(Ljava/awt/AWTEvent;)V java.desktop@21.0.5 (785 bytes) @ 0x00000252fa670f14 [0x00000252fa670040+0x0000000000000ed4]
J 2325 c1 java.awt.Container.dispatchEventImpl(Ljava/awt/AWTEvent;)V java.desktop@21.0.5 (129 bytes) @ 0x00000252fa64e93c [0x00000252fa64e8a0+0x000000000000009c]
J 2608 c1 java.awt.LightweightDispatcher.retargetMouseEvent(Ljava/awt/Component;ILjava/awt/event/MouseEvent;)V java.desktop@21.0.5 (372 bytes) @ 0x00000252fa61c364 [0x00000252fa61b9e0+0x0000000000000984]
J 2578 c1 java.awt.LightweightDispatcher.processMouseEvent(Ljava/awt/event/MouseEvent;)Z java.desktop@21.0.5 (268 bytes) @ 0x00000252fa628a54 [0x00000252fa6284c0+0x0000000000000594]
J 2474 c1 java.awt.LightweightDispatcher.dispatchEvent(Ljava/awt/AWTEvent;)Z java.desktop@21.0.5 (73 bytes) @ 0x00000252fa699bbc [0x00000252fa699a60+0x000000000000015c]
J 2325 c1 java.awt.Container.dispatchEventImpl(Ljava/awt/AWTEvent;)V java.desktop@21.0.5 (129 bytes) @ 0x00000252fa64e914 [0x00000252fa64e8a0+0x0000000000000074]
J 2473 c1 java.awt.Window.dispatchEventImpl(Ljava/awt/AWTEvent;)V java.desktop@21.0.5 (23 bytes) @ 0x00000252fa699654 [0x00000252fa6994e0+0x0000000000000174]
J 1838 c1 java.awt.EventQueue.dispatchEventImpl(Ljava/awt/AWTEvent;Ljava/lang/Object;)V java.desktop@21.0.5 (139 bytes) @ 0x00000252fa3bec64 [0x00000252fa3beb20+0x0000000000000144]
J 1837 c1 java.awt.EventQueue$4.run()Ljava/lang/Void; java.desktop@21.0.5 (60 bytes) @ 0x00000252fa3c0504 [0x00000252fa3c0460+0x00000000000000a4]
J 1836 c1 java.awt.EventQueue$4.run()Ljava/lang/Object; java.desktop@21.0.5 (5 bytes) @ 0x00000252fa3c0a04 [0x00000252fa3c09c0+0x0000000000000044]
J 1778 c1 java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Ljava/security/PrivilegedAction;Ljava/security/AccessControlContext;Ljava/security/AccessControlContext;)Ljava/lang/Object; java.base@21.0.5 (22 bytes) @ 0x00000252fa4601d4 [0x00000252fa45ffa0+0x0000000000000234]
J 1832 c1 java.awt.EventQueue.dispatchEvent(Ljava/awt/AWTEvent;)V java.desktop@21.0.5 (80 bytes) @ 0x00000252fa44f14c [0x00000252fa44eae0+0x000000000000066c]
J 1846 c1 java.awt.EventDispatchThread.pumpOneEventForFilters(I)V java.desktop@21.0.5 (106 bytes) @ 0x00000252fa3ba544 [0x00000252fa3ba2e0+0x0000000000000264]
j java.awt.EventDispatchThread.pumpEventsForFilter(ILjava/awt/Conditional;Ljava/awt/EventFilter;)V+35 java.desktop@21.0.5
j java.awt.EventDispatchThread.pumpEventsForHierarchy(ILjava/awt/Conditional;Ljava/awt/Component;)V+11 java.desktop@21.0.5
j java.awt.EventDispatchThread.pumpEvents(ILjava/awt/Conditional;)V+4 java.desktop@21.0.5
j java.awt.EventDispatchThread.pumpEvents(Ljava/awt/Conditional;)V+3 java.desktop@21.0.5
j java.awt.EventDispatchThread.run()V+9 java.desktop@21.0.5
v ~StubRoutines::call_stub 0x00000252fa08100d

siginfo: EXCEPTION_ACCESS_VIOLATION (0xc0000005), writing address 0x0000000000000000



If anyone has a perspective on this, it'd be appreciated.


The catch 22 in this project is that pre-creating the file is not a good idea, since avio_open has a purpose in-built method for that (I tried). Error checking everything about Java's File class in terms of setting pathways and creating and deleting files is not problematic. Likewise, permissions are all fine (Full Control in source and target folders) ; I've tested default C drive folders, which have restritions, to a separate volume and removable media, to no effect. Likewise, FFmpeg requires a forward slash, "/" in file paths, whereas Java does the backslash, generally. That's been handled with the replace method in the above conditioning, also to no effect.


The basic contradiction in the project seems to be that the error tries open a file that does not exist, with a valid source and destination file, and if I try to create a placeholder file wiht an acvhd extension at the event handling for the Convert button, it still errors out ; meanwhile, FFmpeg allegedly handles the file creation at its core, but requires a valid path to be passed ; I've tried with and without a filename, with and without an extension. I'm not able to resovle it.


The excessive error handling conditions are in an effort to isolate the problem, which I think I've done.


There also seems to be a compatibility between mpegts and acvhd, which is why I also had that format specified in the conversion function, without result.


I also have the idea to be able to do this without having to install any libraries locally or having to set path variables, which is an aspect that both GStreamer and FFmpeg have.


Nearest suggestion I've found is this : integrate ffmpeg with spring boot


AI remains hopeless for resolving this issue.


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