I don't know if there's any work being done on this, but I wish ffmpeg had better support for modern ML based filters, like super resolution, frame interpolation, segmentation, automatic subtitles, etc. There was an ml filter made years ago as part of a Google summer of code projekt, which includes super resolution, but it's difficult to use and you need to train or find pretrained model files. ML is where video and audio filter research is happening at the moment, hopefully ffmpeg can get a good pipeline going. And please use an inference library that can run on all computers.
FFmpeg 6.0
121–130 of 210 posts
Re: FFmpeg 6.0
#122If you want to know a bit more about what is important in this major release, you can watch my presentation about FFmpeg 6.0 at Fosdem: https://fosdem.org/2023/schedule/event/om_vlc/ (Video + Slides) It’s a bit less dry than the changelog, notably for the evolutions of the APIs. What’s also important is the changes about the release schedule that we’ve been pushing with the community. Major version every year at the…
nice talk, thanks! I guess for once You finally "did" make it with FFmpeg to the front page of HN ;-)
Thanks for watching the talk :)
Re: FFmpeg 6.0
#123I wonder how hard it is to add more decoders to it? It'd be great if it could cope with .m2t timecode from HDV video streams.
Send files and bugreport
Re: FFmpeg 6.0
#124I absolutely love ffmpeg, but for the life of me I cannot understand how its pipeline system works. Each time I need to use it, I attempt to construct the command myself, but end up giving up and consulting StackOverflow. Amazingly, someone has usually done the exact thing I need to do and posted their command line to StackOverflow, so I'm never out of luck! How do I actually start understanding how ffmpeg works? I w…
I know a lot of people look down on ChatGpt. But I have been using it for creating scripts to use with ffmpeg and I was able to get most of the things that I needed with very little massaging required. You can then ask ChatGpt about what it did and why so it will explain it as well so you can get some basic understanding on how things work. People don't realise what kind of tool Chat Gpt is and how to properly utilis…
Agree! I used ChatGPT to explain some (uncommented)ffmpeg scripts I wrote few years ago. Scripts where created by going trough many websites and adapting to my needs. Explanation from chatGPT was spot on.
Re: FFmpeg 6.0
#125Re: FFmpeg 6.0
#126I love the version names, all famous scientists (Von Neumann, Riemann, Lorentz etc.)!
Though I am curious whether there is a specific reasoning behind a name in relation to a version (alphabetically, numerically, chronologically etc.)?
Re: FFmpeg 6.0
#127I absolutely love ffmpeg, but for the life of me I cannot understand how its pipeline system works. Each time I need to use it, I attempt to construct the command myself, but end up giving up and consulting StackOverflow. Amazingly, someone has usually done the exact thing I need to do and posted their command line to StackOverflow, so I'm never out of luck! How do I actually start understanding how ffmpeg works? I w…
This. And imagemagick.
Though I have used ffmpeg on images, too.
Re: FFmpeg 6.0
#128I absolutely love ffmpeg, but for the life of me I cannot understand how its pipeline system works. Each time I need to use it, I attempt to construct the command myself, but end up giving up and consulting StackOverflow. Amazingly, someone has usually done the exact thing I need to do and posted their command line to StackOverflow, so I'm never out of luck! How do I actually start understanding how ffmpeg works? I w…
Use ChatGPT, prompt: ffmpeg pipeline capture webcam to mp4 ChatGPT: >>> ffmpeg -f v4l2 -framerate 30 -video_size 640x480 -i /dev/video0 -c:v libx264 -preset veryfast -crf 28 -pix_fmt yuv420p output.mp4 Here's a brief explanation of what each part of the command does: - `f v4l2`: specifies that the input device is a V4L2 (Video for Linux 2) device, which is typically what webcams use. - `framerate 30`: sets the framer…
Yeah, crf sets the quality and 28 will make your video look like a blurry over-compressed mess. Congrats :)
Re: FFmpeg 6.0
#129Earlier quoted context omitted.
You need `-pix_fmt yuv420p` for an iPhone to recognize a ffmpeg-encoded video file.
Do you happen to know why? Is this a hardware decode limitation perhaps, or a bug in the standard decoder?
YUV420p is the only pixel format that all H.264 compatible decoders MUST support. Other formats are optional.
In practice that means that most hardware decoders (not just iPhones, also other phones, TVs, older PC GPUs) won't be able to decode YUV 4:2:2 or YUV 4:4:4 videos.
It's kinda annoying, since YUV420 really messes up red text in screen captures for example.
You need this parameter to force ffmpeg to convert the color space if your input isn't YUV420P (it defaults to keeping the input pixel format to avoid quality loss).
Re: FFmpeg 6.0
#130I love ffmpeg, a single command of `ffmpeg -ss 01:15:42 -to 01:16:00 -i example.mp4 -c copy output.mp4` will let you create a video clip at a certain point in time from a larger video without decoding/encoding it.
I wrote a blog post and made a demo video the other day going over using this feature at: https://nickjanetakis.com/blog/create-video-clips-with-ffmpe...