gpac
FFmpeg
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gpac | FFmpeg | |
---|---|---|
7 | 485 | |
2,560 | 42,250 | |
2.1% | 2.5% | |
9.8 | 10.0 | |
7 days ago | 6 days ago | |
C | C | |
GNU Lesser General Public License v3.0 only | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
gpac
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static builds of mp4box
I know this isn't actually ffmpeg, but I think of mp4box as being ffmpeg-adjacent so I thought I'd ask here. Does anyone know if there are reliable static builds of just mp4box online anywhere? All I seem to be able to find on GPAC's site is either a big ol dynamically linked install, or instructions on how to build the mp4box-only binary locally yourself https://github.com/gpac/gpac/wiki/Build-Introduction
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I have quite a few movies that fail to transcode due to unknown audio tracks. Any way to fix that?
If they're MKVs, MKVToolNix's header editor makes it easy to change the language tag of an audio track. For MP4 you could either remux them to an MKV (also using MKVToolNix) and change the language tag in the process, or use a command-line tool like MP4Box to change the language while keeping the MP4 container without reencoding.
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Defining Audio Tracks
At least for MKVs, you can use MKVToolNix's header editor to add a name to the audio tracks, which most Plex clients will pick up on (e.g. in the web app: https://i.imgur.com/awhU0Z6.png). For MP4 containers, I think MP4Box can do this (one of their examples is "replace the label on an audio or subtitle track"). Other containers probably have their own methods, but I'd probably just throw them into MKVToolNix to move the streams to an MKV and edit the audio track names at the same time.
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Determining new bitrate when lossy converting from 256K M4A to Opus
Just an example: https://github.com/gpac/gpac/wiki/MP4Box
- How can I convert mp3 to a m4a without quality loss?
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A Quick Dive Into MP4
MP4Box
- AAC and M4A
FFmpeg
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Show HN: CompressX, my FFmpeg wrapper for macOS, made $9k in the last 4 months
GPL2
Since FFmpeg is GPL2, doesn’t that require CompressX to disclose its source code?
IANAL, apologies if I miss understand license requirements.
https://github.com/FFmpeg/FFmpeg?tab=License-1-ov-file
- Microsoft offered FFmpeg one-time payment instead of support contract
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Writing x86 SIMD using x86inc.asm (2017)
This turns out to be a lot of assembly macros to help write one x86 assembly. https://github.com/FFmpeg/FFmpeg/blob/master/libavutil/x86/x...
The sibling comment recommending compiler intrinsics is probably the best way to go for writing SIMD code. A mixture of `` style types and intrinsics to specify instructions is a solid 90% solution compared to assembly.
If you want that last 10%, I think macros are putting the emphasis in the wrong place. They're a somewhat easy way to build up a language abstraction which will work if held carefully, but I'm confident the dev experience using this abstraction when you write invalid code will be deeply confusing.
I would suggest to write a parser instead of the macros. That'll tell you clearly when the syntax is invalid (though possibly not with much precision) and it'll give you a place to put semantic analysis for where valid syntax encodes nonsense. Do the equivalent of the macro expansions on the parsed tree instead of on the text. Emit asm as the "back end".
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Video Generation with Python
You might have heard of FFMPEG or ImageMagick for image and video edition in a programmatic way. MoviePy is a Python module for video editing (Python wrapper for FFMPEG and ImageMagick). It provides functions for cutting, concatenations, title insertions, video compositing, video processing, and the creation of custom effects. It can read and write common video and audio formats and be run on any platform with Python 2.7 or 3+.
- I want some logically difficult c programs
- Looking for a good file converter for upload testing
- Best Way to Rip Rare DVDs?
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11 Ways to Optimize Your Website
There are many cloud-based tools and websites that can convert your images, but the problem with these tools is that you usually have to upload the files for them to be processed, and some of their services are not free. In this article, I'd like to introduce a piece of software called FFmpeg, which allows you convert the images locally with one simple command.
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AI-assisted removal of filler words from video recordings
To run the demo locally, be sure to have Python 3.11 and FFmpeg installed.
- Noob compression-ist here, looking to compress 10TB worth of video footage...
What are some alternatives?
Bento4 - Full-featured MP4 format, MPEG DASH, HLS, CMAF SDK and tools
mpv - 🎥 Command line video player
nginx-vod-module - NGINX-based MP4 Repackager
ffmpeg-python - Python bindings for FFmpeg - with complex filtering support
Ant-Media-Server - Ant Media Server is a live streaming engine software that provides adaptive, ultra low latency streaming by using WebRTC technology with ~0.5 seconds latency. Ant Media Server is auto-scalable and it can run on-premise or on-cloud.
OpenH264 - Open Source H.264 Codec
mp4rs - :movie_camera: MP4 reader and writer library in Rust! 🦀 [Moved to: https://github.com/alfg/mp4-rust]
Exoplayer - An extensible media player for Android
hlsdl - C program to download VoD HLS (.m3u8) files
MediaInfo - Convenient unified display of the most relevant technical and tag data for video and audio files.
GStreamer - GStreamer open-source multimedia framework