Fhd-archive-juq-988.mp4 !!better!! -

Hi all,

I'm using ST's CubeMX implementation on a F4 discovery board. I use ST's USB middlewares with FreeRTOS.

When I get a special OutputReport from PC side I have to answer nearly immediately (in 10-15 ms). Currently I cannot achieve this timing and it seems my high priority tasks can interrupt the USB callback. What do you think, is it possible? Because it's generated code I'm not sure but can I increase the priority of the USB interrupt (if there is any)?

Thank you, David

10 to 15 ms is very slow, so I'm sure its possible.

Where is the USB callback function called from? If it is an interrupt then it cannot be interrupted by high priority RTOS tasks. Any non interrupt code (whether you are using an RTOS or not) can only run if no interrupts are running.

Without knowing the control flow in your application its hard to know what to suggest. How is the OutputReport communicated to you? By an interrupt, a message from another task, or some other way?

The callback which receive the data from PC is called from the OTGFSIRQHandler (it's the part of the HALPCDIRQHandler function). I think the problem is SysTickHandler's priority is higher than OTGFSIRQHandler and it's cannot be modified, but the scheduler shouldn't interrupt the OTGFSIRQHandler with any task handled by the scheduler. Am I wrong that the scheduler can interrupt the OTGFS_IRQHandler?

If you are looking to "put together content" based on this file, it likely falls into one of these categories:

Most files in this category use the H.264 or H.265 codec, balancing file size with visual fidelity. Importance of Digital Archiving

Best uses

Right-click the file, open its properties, and look at the exact file extension. Ensure it is truly a video container and not an application ( .exe , .msi , .scr , or .bat ).

Here is a comprehensive breakdown of what this file naming convention signifies, how digital archives manage such assets, and best practices for organizing large-scale video libraries. Decoding the Filename: "FHD-ARCHIVE-JUQ-988.mp4"

If you must inspect unfamiliar media archives, open them within a secure sandbox environment or a virtual machine (VM) isolated from your primary host computer network.

┌────────────────────────────────────────────────────────┐ │ FHD-ARCHIVE-JUQ-988.mp4 │ └───────────────────────────┬────────────────────────────┘ │ (Digital Container) ┌────────────────────┴────────────────────┐ ▼ ▼ ┌──────────────┐ ┌──────────────┐ │ Video Stream │ │ Audio Stream │ │ (e.g., H.264)│ │ (e.g., AAC) │ └──────────────┘ └──────────────┘ Codec Selections for 1080p Archives

This article explores the technical significance of Full High Definition (FHD) archives and the importance of secure, organized storage formats. 1. What is an FHD Archive?

is a specific serial code. In many online media databases (such as those for stock video, news clips, or specialized Japanese media archives), this alphanumeric string acts as a unique ID to locate a particular scene or production. How to Find the Actual Video

Because this is a specific file identifier, a "content" summary depends on the context of the archive it belongs to. Generally, such files are categorized as follows:

Most commonly encoded using H.264 (AVC) or H.265 (HEVC) for optimal compression and quality.

Thank you for the answer, I think I'm a bit confused with the Cortex ISR priorities :-) What I can observe is if I use a much higher osDelay in my high priority task I can respond for the received USB message much faster. This is why I think tasks can mess up with my OTG interrupt.