3 ms·

Show HN: Shrink my video – Opinionated ways to reduce video file size

22 points by acailly 6y ago

acailly 6y ago
The main goal with this tool is to contribute to limiting environmental footprint of IT (more details here: https://acailly.github.io/shrink-my-video/#why https://acailly.github.io/shrink-my-video/#why) First, by allowing non-tech savvy users to reduce the size of their video using recommended preset by The Shift Project (https://theshiftproject.org/en/article/unsustainable-use-online-video/ https://theshiftproject.org/en/article/unsustainable-use-onl...) without having to install and configure any software (it uses FFMPEG.WASM directly in the browser) Second, by offering more radical ways to reduce the video file size. The more extreme setting is to limit FPS to 1 image every 5 seconds, which is surprisingly well suited for conference videos. For example, I reduced one of my video from 85 Mo to 15 Mo with these techniques (content is in French): - original video: https://acailly.github.io/confs/developper-avec-utilisateur/developper-avec-utilisateur-inria.mp4 https://acailly.github.io/confs/developper-avec-utilisateur/... - reduced video: https://acailly.github.io/confs/developper-avec-utilisateur/developper-avec-utilisateur-inria-shrinked.mp4 https://acailly.github.io/confs/developper-avec-utilisateur/... If you think of another original/radical technique to try, let me know :-)
- BelenusMordred 6y ago
  22 is quite a low setting for crf, I believe the default is 23. I normally go for 26 without problems, the ffmpeg authors consider 28 to be the top of the sane range, though results do depend on the video.
  - acailly 6y ago
    Right, lowering the crf to 26 or 28 could be added, thanks :-)
    - acailly 6y ago
      There it is, setting CRF to 28 is available
sanmak 6y ago
The best part of this app is you are not only giving it a feature to perform an operation but also educating users with a library that they can use. Great job.
genericguy 6y ago
Wow, I had no idea that ffmpeg.wasm exists!
bertman 6y ago
Looks nice! Maybe you could add some words to you site to emphasize that the video isn't actually uploaded to a remote server.
- acailly 6y ago
  Good idea, it is not obvious, thanks :-)

22 points by acailly 6y ago

The main goal with this tool is to contribute to limiting environmental footprint of IT (more details here: https://acailly.github.io/shrink-my-video/#why https://acailly.github.io/shrink-my-video/#why) First, by allowing non-tech savvy users to reduce the size of their video using recommended preset by The Shift Project (https://theshiftproject.org/en/article/unsustainable-use-online-video/ https://theshiftproject.org/en/article/unsustainable-use-onl...) without having to install and configure any software (it uses FFMPEG.WASM directly in the browser) Second, by offering more radical ways to reduce the video file size. The more extreme setting is to limit FPS to 1 image every 5 seconds, which is surprisingly well suited for conference videos. For example, I reduced one of my video from 85 Mo to 15 Mo with these techniques (content is in French): - original video: https://acailly.github.io/confs/developper-avec-utilisateur/developper-avec-utilisateur-inria.mp4 https://acailly.github.io/confs/developper-avec-utilisateur/... - reduced video: https://acailly.github.io/confs/developper-avec-utilisateur/developper-avec-utilisateur-inria-shrinked.mp4 https://acailly.github.io/confs/developper-avec-utilisateur/... If you think of another original/radical technique to try, let me know :-)

BelenusMordred 6y ago
22 is quite a low setting for crf, I believe the default is 23. I normally go for 26 without problems, the ffmpeg authors consider 28 to be the top of the sane range, though results do depend on the video.
- acailly 6y ago
  Right, lowering the crf to 26 or 28 could be added, thanks :-)
  - acailly 6y ago
    There it is, setting CRF to 28 is available

sanmak 6y ago

The best part of this app is you are not only giving it a feature to perform an operation but also educating users with a library that they can use. Great job.

genericguy 6y ago

Wow, I had no idea that ffmpeg.wasm exists!

bertman 6y ago

Looks nice! Maybe you could add some words to you site to emphasize that the video isn't actually uploaded to a remote server.

acailly 6y ago
Good idea, it is not obvious, thanks :-)