Tag: M-JPEG

Legacy Code and Overengineering: The MJPEG Decoder Saga

So, hashtag#DirectShow virtual cameras — those elusive creatures that always turn heads. We’ve chatted about them before on LinkedIn (check out our post here https://lnkd.in/dYte5SQ5). But let’s rewind to 2011 when we decided to play mad scientist. Our mission? Whip up a batch of DirectShow filters that could snag JPEG and M-JPEG video streams from network sources (think IP cameras) and seamlessly slot them into DirectShow applications.

But wait, there’s more! We cranked it up a notch. Picture this: a secret lab, flickering monitors, and a dash of overengineering. Our filters cozied up to the stock Microsoft JPEG decoder — the one that’s been less than stellar since forever. And guess what? We wrapped it all in a nostalgic bow — a wrapper around the ancient VCM JPEG Decoder from 1992 https://lnkd.in/dYRUi84x. Yep, that’s right — the same decoder that predates most of us.

Why, you ask? Because that’s how Microsoft Windows rolls. It clings to legacy features like your favorite worn-out hoodie. The “MJPEG Decompressor” (sounds fancy, right?) is still documented https://lnkd.in/dBZzBbKK as a relic . But honestly, no one should touch it with a ten-foot pole. Not now, not 13 years ago — never.

And here’s the twist: Our Alax.Info IP Video Source DirectShow extension https://lnkd.in/diB_3vBf, born from this wild experiment, lives on. It’s like that quirky friend who insists on wearing mismatched socks. People still use it, still recommend it. Maybe it’s the retro charm or the sheer audacity. Who knows?

So next time you’re streaming video from a network source, tip your hat to those unsung heroes — the DirectShow filters that made it all happen. And raise a banana (yes, a banana) to the MJPEG Decompressor. It’s been around longer than your grandma’s favorite recipe.

There you have it — a tale of tech, tenacity, and a touch of madness. ????????????

Hardware accelerated JPEG video decoder MFT from AMD

Video GPU vendors (AMD, Intel, NVIDIA) ship their hardware with drivers, which in turn provide hardware-assisted decoder for JPEG (also known as MJPG and MJPEG. and Motion JPEG) video in form-factor of a Media Foundation Transform (MFT). JPEG is not included in DirectX Video Acceleration (DXVA) 2.0 specification, however hardware carries implementation for the decoder.…

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Using IP Video Source programmatically as a standalone DirectShow Video Source Filter for JPEG and M-JPEG IP Cameras

Recent IP Video Source class/module is not limited to use via registration as a video input/capture/source device. The filter is also registered as a regular filter and can be used programmatically in a regular way: CoCreateInstance, AddFilter etc. A C++ code snippet below shows how to import interface definition, create an instance of the filter,…

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IP Video Source: 64-bit version, resolution flexibility, Adobe FMLE

The IP Video Source update provides several improvements to the driver: copy/paste feature to backup, restore, or synchronize installed devices between 32-bit and 64-bit versions 64-bit version and .MSI dynamic video resizing (via Video Resizer DSP) Adobe FMLE compatibility Updates in greater detail follow. Device Copy/Paste Feature The video device management window is providing Copy…

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DirectShow Video Source Filter for JPEG and M-JPEG IP Cameras

This implements a DirectShow driver/wrapper over a HTTP based JPEG/M-JPEG streamed video, widely available with IP cameras. Once installed, it provides a Start Menu shortcut to manage video capture devices, where a user can add/remove devices. The devices are automatically registered with DriectShow and are available to applications. The compatibility list includes: Windows SDK AmCap…

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