ffmpeg carrierwave-video always returns "unknown encoder libfaac"

Question

I can give ffmpeg videos to convert via command line, and it converts them happily, but when I ask it to convert things in rails, it returns "Unknown encoder libfaac" no matter the video I give it.

I call it using this line: process encode_video: [:mp4, resolution: "640x480"]

I've already spent hours trying to (unsuccessfully) compile ffmpeg with libfaac on Windows, but now it just seems ridiculous, because not everything I pass it is even aac. What's going on?

Does your ffmpeg build include `--enable-libfaac --enable-nonfree`? This is doubtful (due to `--enable-nonfree`) unless you compiled ffmpeg yourself. Why not use a different AAC encoder? — llogan, Nov 05 '13 at 23:19

score 5 · Answer 1 · answered Jul 17 '15 at 12:42

5

In uploader/video_uploader.rb add these lines

version :mp4 do
   process :encode_video=> [:mp4, audio_codec: "aac",:custom => "-strict experimental -q:v 5 -preset slow -g 30"]
end

answered Jul 17 '15 at 12:42

akshay

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score 1 · Accepted Answer · answered Nov 16 '13 at 20:47

1

I fixed it! For some reason it was always using libfaac. I fixed this by adding audio_codec: "aac", custom: "-strict experimental -q:v 5 -preset slow -g 30" to the arguments of encode_video.

answered Nov 16 '13 at 20:47

Olga

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15

How did you added it? – Dev Mar 25 '15 at 10:29

ffmpeg carrierwave-video always returns "unknown encoder libfaac"

2 Answers2