CODEWITHSUNDEEP
ffmpeg
Taapo
Taapo

Reputation: 1977

Showing in-video visual progress bar with FFMPEG?

As OBS Studio lacks a visual indicator to show how far a video has progressed (and when you need to advance to the next scene), I was wondering if there is a command-line option (or solution) to get FFMPEG to re-encode the video and show a progress bar at the bottom of the video that shows how long the video has been playing so far.

Is there such a feature?

Upvotes: 3

Views: 4105

Answers (2)

Unknow0059
Unknow0059

Reputation: 134

Here I provide elaboration for the accepted answer.

Along the way, I also answer Mario Mey's question of what "H-h" means.

Visualization:

visualization

Explanation:

color[bar] and [bar]overlay means the output bar from color goes into the same-named input of overlay. [0] by default refers to the input file, here given into the overlay filter.

ffmpeg-filters 16.11 color (color c; size s)

  • Create video frame(s) of solid color red
  • Specify size of 1280x10

ffmpeg-filters 11.183 overlay (x; y; shorttest)

  • Relative to left-top corner, place at horizontal coordinate x, -w (negative number) pixels away from the left, positively increasing by +(w/10), where 10 is total seconds, across time *t (fractional seconds at instant), until it reaches the rightmost edge.
  • Relative to x-top corner, place at vertical coord y, H-h⁸ pixels away from the bottom.
  • Proceed into next frame as soon as possible and reevaluate expressions.

-c:a copy copies the audio stream, if it has one.

Upvotes: 2

llogan
llogan

Reputation: 133713

Here's a simple 3 second example using an animated overlay:

progress bar example

ffmpeg -i input.mp4 -filter_complex "color=c=red:s=1280x10[bar];[0][bar]overlay=-w+(w/10)*t:H-h:shortest=1" -c:a copy output.mp4

What you will have to change:

  • In the color filter I used 1280 as an example to match the width of input.mp4. You can use ffprobe to get the width or the scale2ref filter to resize to match input.mp4.

  • In the overlay filter I used 10 as an example for the total duration in seconds of input.mp4. You can use ffprobe to get the duration.

Upvotes: 14

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