FFmpeg 4.4 • Hacker News Board

Re: FFmpeg 4.4

#131

Post by superasn » Fri, Apr 09, 2021, 8:11 PM UTC

zerocrates wrote: post #81

superasn wrote: post #61

Earlier quoted context omitted.

Wow never realized ffmpeg could be used like this! Unfortunately both these commands create a somewhat jerky video on my rx 550 on linux mint and drives CPU crazy (ryzen 3500). I guess it's my underpowered graphics card, but any way to tweak your grab-screen-lossless for a smoother capture?

I'm surprised those specific commands work at all on your machine, since they use the Nvidia-specific nvenc.

Also I tried with -vcodec huffyuv after searching the internet, but no change in performace :/

Re: FFmpeg 4.4

#132

Post by neweraccount » Fri, Apr 09, 2021, 10:08 PM UTC

I hope I can ask this question here. Is it possible to create a text file of timestamps (from ts -> to ts) in as many lines as possible and have this file in same directory as a video file. Any video player should read this file (just like subtitles) and skip the sections listed in the file. I hope to distribute this file as a form of editing without modifying original video file.

Re: FFmpeg 4.4

#133

Post by [deleted] » Fri, Apr 09, 2021, 11:43 PM UTC

corobo wrote: post #108

radlad wrote: post #103

Earlier quoted context omitted.

What exactly is ffmpeg's one thing? Or curl's for that matter?

CLI video editing Make web requests

[deleted]

Re: FFmpeg 4.4

#134

Post by joshspankit » Sun, Apr 11, 2021, 2:27 AM UTC

eXpl0it3r wrote: post #28

godmode2019 wrote: post #13

I think everyone was a txt file on their computer filled with FFmpeg commands. Care to share yours?

Video to GIF SET filters="fps=%4,scale=%3:-1:flags=lanczos" ffmpeg -v warning -i %1 -vf "%filters%,palettegen" -y palette.png ffmpeg -v warning -i %1 -i palette.png -lavfi "%filters% \[x\]; \[x\]\[1:v\] paletteuse" -y %2 DEL palette.png togif.bat Extract audio from a video ffmpeg -i "path\to\my_input_video_file.mp4" "path\to\my_output_audio_only.wav" Extract specific video and audio stream ffmpeg -i "path\to\my_input…

> Extract audio from a video

In my opinion, `ffmpeg -i filename.mp4 filename.wav` is one of the greatest known examples of powerful functionality with a simple interface.

Re: FFmpeg 4.4

#135

Post by kdeldycke » Fri, Apr 16, 2021, 4:32 PM UTC

godmode2019 wrote: post #13

I think everyone was a txt file on their computer filled with FFmpeg commands. Care to share yours?

Indeed! Here is my collection of FFmpeg CLIs: https://github.com/kdeldycke/kevin-deldycke-blog/blob/main/c...