Extract audio from mp4

Fixit7 · 02-17-2016, 08:15 AM

thanks.

I will look up how to convert oog to mp3.

Fixit7 · 02-17-2016, 05:52 PM

Tried to convert oog to mp3.

Quote:

# ffmpeg -i Rhinestone.ogg to example.mp3
ffmpeg version 2.2.16 Copyright (c) 2000-2015 the FFmpeg developers
built on Oct 8 2015 14:32:29 with gcc 4.8.2 (GCC)
configuration: --prefix=/usr --libdir=/usr/lib --enable-libmp3lame --enable-libx264 --enable-libfaac --enable-pthreads --enable-small --enable-postproc --enable-libvorbis --enable-gpl --enable-shared --enable-nonfree --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-debug --enable-bzlib --enable-zlib --enable-libspeex --enable-version3 --enable-runtime-cpudetect --enable-x11grab --enable-libschroedinger --enable-libtheora --enable-libxvid --enable-swscale --enable-libvpx
libavutil 52. 66.100 / 52. 66.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 33.100 / 55. 33.100
libavdevice 55. 10.100 / 55. 10.100
libavfilter 4. 2.100 / 4. 2.100
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Rhinestone.ogg: Invalid data found when processing input
Conversion failed!

Emerson · 02-17-2016, 06:07 PM

Was the input file a valid ogg file? The file you downloaded from me was an ogg, I changed the extension to mp3 for testing purpose. If you still have it try to convert it.

Fixit7 · 02-17-2016, 06:19 PM

I used mplayer to do the conversion.

Quote:

# file *.ogg
Rhinestone.ogg: FoxPro FPT, blocks size 65472, next free block index 553649408

Because this looks like a good mp3.

Quote:

# file Song*.mp3
SongSungBlue.mp3: MPEG ADTS, layer III, v1, 128 kbps, 44.1 kHz, JntStereo

I think some of files on YouTube are not true mp4s.

Emerson · 02-17-2016, 06:30 PM

Quote:

# file *.ogg
Rhinestone.ogg: FoxPro FPT, blocks size 65472, next free block index 553649408

This is not ogg file, it is useless for your testing.

Did you try this? It should give you an ogg:

Code:

mplayer -dumpaudio -dumpfile RhinestoneCowboy.ogg Rhinestone_Cowboy.mp4

Fixit7 · 02-17-2016, 08:42 PM

Got the same answer from file.

Quote:

# file *.ogg
RhinestoneCowboy.ogg: FoxPro FPT, blocks size 65472, next free block index 55364

It looks like mplayer is not able to make a good conversion. ?

Fixit7 · 02-17-2016, 08:57 PM

I got it to work with

Quote:

ffmpeg -i Rhinestone.mp4 -acodec libvorbis file.ogg

Then I used VLC to convert the .ogg to mp3.
It has a convert/save under Media. :-)

SOLVED.

Fixit7 · 02-23-2016, 07:48 PM

Quote:

ffmpeg -i Rhinestone.mp4 -acodec libvorbis file.ogg

Is there a bash method of doing a batch conversion from mp4s to .ogg files ?

(I download a lot of mp4 files.)