I try to implement the video_editing feature to my app, and I'd tried the Tapioca Package and the Video_Manipulation package but found that they both do not meet my criteria, so I put my last hope on the flutter_ffmpeg package.
But as I read through its official doc on pub.dev, not a thing on my mind but "WHAT THE HECK", I can't understand what those commands are used for, and though I can't find anything related to add widget overlays to a video. And almost no tutorial on the web that explains how to use it.
So if you successfully implemented adding watermarks/texts to a video with the ffmpeg package, please show me how. Thanks!~
ffmpeg -i video.mp4 -i logo.png -filter_complex "[0:v][1:v]overlay=5:5,drawtext=text=:x=(w-0)/8:y=(h-4)/10:fontsize=64:fontcolor=white:ryanwangTV" -c:a copy -movflags +faststart output.mp4
ffmpeg -i video.mp4 -i logo.png
there are the video in cuestion to work and the png image that we want to apply how watermark
the video.mp4 has two "parts" a video and a audio file, remember it
the logo.png is a one image, but it consederer a "video" the duration is miliseconds.
how you call parts of video.mp4 and logo.png?
using mapping, for file 1) you will called [0] and for file 2 (logo.png) you will used [1]
if you want to use the video of video.mp4 you will call [0:v] and the video of png is [1:v]
for watermark use filter complex, to "mix" the image on the video
"[0:v][1:v]overlay=5:5,drawtext=text=:x=(w-0)/8:y=(h-4)/10:fontsize=64:fontcolor=white:ryanwangTV
[0:v][1:v] is the video of video.mp4 and image of logo.png overlay=5:5 the first 5 is the main video, and the second 5 is the image to put on of the video.
x=(w-0)/8 : is the coordenada x y=(h-4)/10 : the coordenada y
fontsize=64 fontcolor=white and the ultimate word is text that you
want to draw in video
-c:a copy its mean: copy the audio of file 1
-movflags +faststart : is to fast start for users of internet on browsers
output.mp4 is the name final