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#gstreamer

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GStreamer

📢 New GStreamer 1.24.13 bug-fix release for our old-stable 1.24 series!

Includes bug fixes, security fixes, stability improvements, memory leak fixes, and performance improvements.

Details at gstreamer.freedesktop.org/rele

📦 Packages for Windows, Android, macOS and iOS will follow soon.

PS: Please note that the 1.24 old-stable series is no longer actively maintained and has been superseded by the GStreamer 1.26 stable series now.

#GStreamer#multimedia#OpenSource
Val Packett 🧉

Posted on the forum about the little #gstreamer plugin I've been working on that zooms into the area of the video that has faces in it (like a certain feature on the fruit company devices). (Oh no, I guess I have "AI experience" now since I've used an ML model for face detection lol) The current code is kinda hacky and I'm looking to upstream pieces to gst-plugins-rs to slim down the amount of custom code required and make the ecosystem better in the process :3

GStreamer Discourse · Working on a face tracking zoom pluginHello 👋 I’ve been working on a plugin (in Rust of course), currently called gst-middle-arena in a subtle reference to a commercial OS feature that inspired it xD Basically it filters a video stream to zoom/crop into (keeping a fixed output size) the area of the image that has people’s faces in it. The need came from mini-conference recordings – I wanted a close-up vertical video feed of the speaker to display side by side with the projector feed, but I didn’t want to operate the camera phy...
Continued thread
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Robert Mader

A first experiment in #gstreamer is quite promising - on the x220 it already makes Showtime (the future Gnome default player) outperform #mpv with 4k@30fps AV1 or VP9 playback - my hope is to get 4k@60fps work smoothly (SDR - bonus for HDR10, but the required shaders might end up being too heavy).

For those interested, you can find the code at gitlab.freedesktop.org/gstream

GitLabDraft: glupload: Implement udmabuf uploader PoC (!8540) · Merge requests · GStreamer / gstreamer · GitLabSimple proof-of-concept for an udmabuf based uploader that takes sysmem I420 as input - the usual format for many sw-decoders for 8bit - and copies it into...
OldCoder
Subject: Easy backup of video DVD to ISO file

A Linux #CLI person can simply use the #Linux #Perl script linked below. No GUIs or heavy dependencies are needed. The script might also work under Windows 11 or above by way of WSL, but this hasn't been tested.

https://laclin.com/rjkbin/ocdvdtoiso.txt

The script, which we'll refer to as "ocdvdtoiso", backs up a video #DVD optical disc to an ISO data file.

"ocdvdtoiso" bypasses the usual DVD bad-blocks backup prevention mechanism. I wrote the script in the mid-2000s and have used it successfully on numerous DVDs. Note: Scratched DVDs require more advanced tools. That is a subject for another time.

The ISO output file will typically be 4 GB to 8 GB in size. So, it's recommended that you have at least 8 GB of free disk space available before you proceed.

Once you've backed up a DVD disc to an ISO file, you can do the following:

Use Handbrake or FFmpeg to convert the ISO to MKV
Play the MKV on a Smart TV by way of a USB3 stick
Play the MKV on a phone or laptop
Play the ISO on a laptop [this requires an ISO player]
Write the ISO back to a fresh optical disc

In short, you can exercise your unquestioned right to use data that you own as you see fit.

The screenshot further down shows Glide, a cross-platform video player, playing "Mr. Holmes", a portrait of Sherlock Holmes in his 90s. Note: Glide is written in #Rust and is based on #GStreamer and GTK.

The process that I used here was as follows:

Purchase the DVD from an Amazon seller
Use "ocdvdtoiso" to convert the DVD to ISO
Use FFmpeg to convert the ISO to MKV [with subtitles]
Use Glide to play the MKV
Use The GIMP to make the screenshot

"ocdvdtoiso" has 3 lightweight dependencies besides Perl. The dependencies are Linux packages named coreutils, lsdvd, and util-linux.

Everything but lsdvd is pre-installed in most Linux distros. So, it should be sufficient to install lsdvd. In a Debian distro, which includes Linux Mint, Ubuntu, WSL, and many others, the following commands should install the dependencies:

sudo apt-get update
sudo apt-get install coreutils lsdvd perl util-linux

It'll be analogous but different for Arch, Gentoo, RedHat, and other Linux distros.

The only other setup steps needed should be to rename the Perl script to "ocdvdtoiso" and to set execute permissions as follows:

chmod 755 ocdvdtoiso

Note: The "oc" stands for "OldCoder". I have quite a few "oc*" tools. I'll be releasing them as #FOSS as I move towards completion of my Linux distro (Laclin).

"ocdvdtoiso" is a "6 in 1" toolset. You can copy or symlink the file to any of the following 6 filenames. The copied or symlinked commands will serve the indicated purposes:

cdtoiso = Copy data CD to ISO file
ocdvdtoiso = Copy video DVD to ISO file
cdmd5 = Compute data CD MD5 sum
dvdmd5 = Compute video DVD MD5 sum
cdsha1 = Compute data CD SHA1 sum
dvdsha1 = Compute video DVD SHA1 sum

BluRay discs and music CDs aren't supported. I have other toolsets for those types of discs.

Enjoy.
Jeff Fortin T. (風の庭園のNekohayo)

Playing some tunes on soundcloud.com/aiobahn/popular I just realized that #SoundCloud does an automatic 100ms fade-in and fade-out when you hit the play/pause button. That feels so nice, especially for music!

I'm wondering if #GStreamer can do that easily, and if we could/should do that in the #GNOME multimedia apps like Amberol and Podcasts (maybe also Decibels and Showtime, though I'm not sure if that would be expected in those cases) 🤔

SoundCloudAiobahnListen to Aiobahn | SoundCloud is an audio platform that lets you listen to what you love and share the sounds you create.
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