Error when processing webm

[ttseng]

I'm getting the following error when I'm trying to create a webm version of a video file:

Running transcoding...
ffmpeg -y -i /public/uploads/tmp/1382112521-11953-7661/webm_Untitled.mov -vcodec libvpx -acodec libvorbis -s 640x360 -b 1500k -ab 160000 -f webm -g 30 -aspect 1.7777777777777777 /public/uploads/tmp/1382112521-11953-7661/tmpfile.webm

Failed encoding...
ffmpeg -y -i /public/uploads/tmp/1382112521-11953-7661/webm_Untitled.mov -vcodec libvpx -acodec libvorbis -s 640x360 -b 1500k -ab 160000 -f webm -g 30 -aspect 1.7777777777777777 /public/uploads/tmp/1382112521-11953-7661/tmpfile.webm

ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
built on Sep 27 2013 14:00:31 with Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libvpx
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/public/uploads/tmp/1382112521-11953-7661/webm_Untitled.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2013-09-27 20:08:57
Duration: 00:00:02.14, start: 0.000000, bitrate: 17460 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 17292 kb/s, 29.88 fps, 29.83 tbr, 90k tbn, 180k tbc
Metadata:
creation_time : 2013-09-27 20:08:57
handler_name : Core Media Data Handler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 123 kb/s
Metadata:
creation_time : 2013-09-27 20:08:57
handler_name : Core Media Data Handler
Please use -b:a or -b:v, -b is ambiguous
Unknown encoder 'libvorbis'

Here is what I have in my uploader:

version :webm do
process :encode_video => [:webm]
def full_filename(for_file)
"#{File.basename(for_file, File.extname(for_file))}.webm"
end
end

I have libvorbis-1.3.3 installed on my machine.

[rheaton]

Are you able to create a webm with ffmpeg command line?

How did you install ffmpeg?

[rheaton]

Try re-building it with these flags:

--disable-encoder=vorbis --enable-libvorbis

(form here) http://xiphmont.livejournal.com/51160.html

Also, it looks like my default options need to be updated to work with the most recent version of ffmpeg-- I will do that a bit later today (unless you can submit a patch for me 😄 ): streamio/streamio-ffmpeg#28

[ttseng]

I rebuilt ffmpeg with your suggestions, and it worked. Thanks!

[rheaton]

Great to hear that!

[ivorpad]

Hi @rheaton

I'm having these exact same issues when trying to process webm. I installed ffmpeg like so:

brew install ffmpeg --disable-encoder=vorbis --enable-libvorbis --with-libvpx

Here's the error message:

Failed to transcode with FFmpeg. Check ffmpeg install and verify video is not corrupt or cut short. Original error: Failed encoding.Errors: no output file created. Full output: ffmpeg version 2.8.6 Copyright (c) 2000-2016 the FFmpeg developers built with Apple LLVM version 7.0.2 (clang-700.1.81) configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.6 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libvpx --enable-vda libavutil 54. 31.100 / 54. 31.100 libavcodec 56. 60.100 / 56. 60.100 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 40.101 / 5. 40.101 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100 Input #0, avi, from '/Users/ivor/workspace/projects/pixup/public/uploads/tmp/1457648455-53407-6064/webm_sample.avi': Metadata: encoder : Nandub v1.0rc2 Duration: 00:00:48.68, start: 0.000000, bitrate: 1587 kb/s Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 720x304 [SAR 1:1 DAR 45:19], 1319 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 29.97 tbc Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 256 kb/s Please use -b:a or -b:v, -b is ambiguous Unknown encoder 'libvorbis'

Any ideas?
Thanks!

[rheaton]

@ivorpad check out the installation notes: https://github.com/rheaton/carrierwave-video#ffmpeg-installation-notes

It needs the libvorbis encoder--getting ffmpeg set up properly is a bit of a beast but doable, good luck! 👍

[ivorpad]

@rheaton

brew reinstall ffmpeg --with-libvpx --with-libvorbis did the trick.

Thanks, Rachel.