3 ms·

Excellent guide, thanks! Shameless plug: a while ago I wrote a simple Python script to remove silent parts from video using ffmpeg, which AFAIK it doesn't do o

by bambax 4y ago

Excellent guide, thanks! Shameless plug: a while ago I wrote a simple Python script to remove silent parts from video using ffmpeg, which AFAIK it doesn't do out of the box: https://github.com/bambax/Remsi https://github.com/bambax/Remsi It might be helpful to others.

asicsp 4y ago
See also: https://github.com/WyattBlue/auto-editor https://github.com/WyattBlue/auto-editor (automatically edit video and audio by analyzing a variety of methods, most notably audio loudness)
dceddia 4y ago
Late 2020 I had the same thought, I was making screencasts and hated doing all the cutting to turn my 45 minutes of mistakes into a 3 minute video. So I made a similar script in Node, where it used ffmpeg’s silencedetect and instead of outputting a new video, it saved an EDL file that I could import into an editor like DaVinci Resolve, and then I could fine tune the edits. As soon as that worked I wanted more - mostly just really wanted the process to be interactive and real-time, instead of the run-check-tweak-repeat cycle of using a script. So I ended up down the rabbit hole of building a video editor instead of making screencasts, and now Recut exists (https://getrecut.com https://getrecut.com). It’s basically an interactive silence remover. I still haven’t finished those screencasts but now I have an editor haha. While it’s pretty basic, it’s saving folks a bunch of time, and there’s lots more cool stuff I want to add between automations and basic manual editing features.
- vagrantJin 4y ago
  Well done sir! Your're a hacker role model.
- tnorthcutt 4y ago
  1. Recut looks awesome, and 2. "I still haven’t finished those screencasts but now I have an editor" amazing :D
- jojohack 4y ago
  This is super-amazing and removes the main excuses why I've been reluctant to do any kind of video-casting. Thanks for sharing!
xmichael999111 4y ago
I get the concept, but can you possibly elaborate on the why? Is this to save time watching movies?
- bambax 4y ago
  Well, no, although a digest-maker for feature films would be an interesting concept! It's for videos you make yourself, to remove silent parts automatically. In interviews for example, it's useful to simply remove silences.
- tveyben 4y ago
  I hate the type of ‘instructional videos’ that have (likely programmatically) edited all and any short pause in the audio making the video appear as a 30+min continuous speak. I mostly interpret this as ‘see me see me - I’m good!’ in stead of ‘let me try to educate you about this subject’. All the natural pauses between sentences gives a much better and natural flow. This also includes ‘oups I made a mistake .. and fixed it like this…’ Just like the line breaks in this comment serves a purpose;-) One great example of a really good tutorial is Eivind Fonn’s Spacemacs ABC videos: https://youtu.be/2y9NLIbNf_I https://youtu.be/2y9NLIbNf_I Here’s my worst example of how not to teach: https://youtu.be/qtIqKaDlqXo https://youtu.be/qtIqKaDlqXo This series is also bad as there is way too much zoom in and out (which distract all but the presenter!) https://youtu.be/qtIqKaDlqXo https://youtu.be/qtIqKaDlqXo
  - sbarre 4y ago
    I hear you, but there's a middle ground I think. A bunch of non-breaking quick cuts is of course jarring and could be better, but what you describe with "mistakes and all" is too far down the other end in my mind. I would not want to sit through someone having to backpedal like that. But to each their own, we all learn differently.
  - JSavageOne 4y ago
    I completely disagree. When I'm trying to learn something, I'd much rather sit through a short, efficient video than a 1 hour unedited video of someone including mistakes and rambling. Hell I generally don't even have the patience for videos in the first place and default to searching for text first unless I'm specifically looking for audio. But to each their own.
matteocontrini 4y ago
In my experience that approach will produce out of sync audio and video for long videos. Audio frames != video frames, so the cuts must be aligned to the video frames timestamps.

by bambax 4y ago

asicsp 4y ago

See also: https://github.com/WyattBlue/auto-editor https://github.com/WyattBlue/auto-editor (automatically edit video and audio by analyzing a variety of methods, most notably audio loudness)

dceddia 4y ago

Late 2020 I had the same thought, I was making screencasts and hated doing all the cutting to turn my 45 minutes of mistakes into a 3 minute video. So I made a similar script in Node, where it used ffmpeg’s silencedetect and instead of outputting a new video, it saved an EDL file that I could import into an editor like DaVinci Resolve, and then I could fine tune the edits. As soon as that worked I wanted more - mostly just really wanted the process to be interactive and real-time, instead of the run-check-tweak-repeat cycle of using a script. So I ended up down the rabbit hole of building a video editor instead of making screencasts, and now Recut exists (https://getrecut.com https://getrecut.com). It’s basically an interactive silence remover. I still haven’t finished those screencasts but now I have an editor haha. While it’s pretty basic, it’s saving folks a bunch of time, and there’s lots more cool stuff I want to add between automations and basic manual editing features.

vagrantJin 4y ago
Well done sir! Your're a hacker role model.
tnorthcutt 4y ago
1. Recut looks awesome, and 2. "I still haven’t finished those screencasts but now I have an editor" amazing :D
jojohack 4y ago
This is super-amazing and removes the main excuses why I've been reluctant to do any kind of video-casting. Thanks for sharing!

xmichael999111 4y ago

I get the concept, but can you possibly elaborate on the why? Is this to save time watching movies?

bambax 4y ago
Well, no, although a digest-maker for feature films would be an interesting concept! It's for videos you make yourself, to remove silent parts automatically. In interviews for example, it's useful to simply remove silences.
tveyben 4y ago
I hate the type of ‘instructional videos’ that have (likely programmatically) edited all and any short pause in the audio making the video appear as a 30+min continuous speak. I mostly interpret this as ‘see me see me - I’m good!’ in stead of ‘let me try to educate you about this subject’. All the natural pauses between sentences gives a much better and natural flow. This also includes ‘oups I made a mistake .. and fixed it like this…’ Just like the line breaks in this comment serves a purpose;-) One great example of a really good tutorial is Eivind Fonn’s Spacemacs ABC videos: https://youtu.be/2y9NLIbNf_I https://youtu.be/2y9NLIbNf_I Here’s my worst example of how not to teach: https://youtu.be/qtIqKaDlqXo https://youtu.be/qtIqKaDlqXo This series is also bad as there is way too much zoom in and out (which distract all but the presenter!) https://youtu.be/qtIqKaDlqXo https://youtu.be/qtIqKaDlqXo
- sbarre 4y ago
  I hear you, but there's a middle ground I think. A bunch of non-breaking quick cuts is of course jarring and could be better, but what you describe with "mistakes and all" is too far down the other end in my mind. I would not want to sit through someone having to backpedal like that. But to each their own, we all learn differently.
- JSavageOne 4y ago
  I completely disagree. When I'm trying to learn something, I'd much rather sit through a short, efficient video than a 1 hour unedited video of someone including mistakes and rambling. Hell I generally don't even have the patience for videos in the first place and default to searching for text first unless I'm specifically looking for audio. But to each their own.

matteocontrini 4y ago

In my experience that approach will produce out of sync audio and video for long videos. Audio frames != video frames, so the cuts must be aligned to the video frames timestamps.