Why is my ogg bigger than my m4a?

Posted by acidzombie24 on Super User See other posts from Super User or by acidzombie24
Published on 2010-03-25T20:03:35Z Indexed on 2010/03/25 20:23 UTC
Read the original article Hit count: 438

Filed under:

vorbis

|

ogg

|

m4a

|

codec

|

ffmpeg

I am using the following commands to encode an audio file to m4a & ogg formats:

ffmpeg.exe -i 0123456789 -ab 192k out.m4a
ffmpeg.exe -i 0123456789 -f wav - | oggenc2.exe - -r -q 6 -o out.ogg

(0123456789 has no extension.)

My m4a output is 14,608kB while my ogg output is 19,809kB.

Why? AFAIK -q 6 is roughly 192kbps. So it should be about even. I could see one file being 1-3MB bigger than the other, but 5MB is pretty large. The m4a is almost 75% of the ogg! Why is this?

© Super User or respective owner

Related posts about vorbis

Ogg/Vorbis: _ov_fopen cannot be found

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to use Ogg/Vorbis with OpenAL to get sound in my game. Right now I'm simply trying to load a .ogg file and read its data, I'm not actually doing anything with it. I first tried using ov_open, however, the documentation said I should really be using ov_fopen on Windows. However, when I… >>> More
Building ARM assembler vorbis decoder lib 'Tremolo' for iPhone

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to compile Tremolo for iPhone. I've pulled in the files bitwise.c bitwiseARM.s codebook.c dpen.s dsp.c floor0.c floor1.c floor1ARM.s floor_lookup.c framing.c info.c mapping0.c mdct.c mdctARM.s misc.c res012.c into a new target, added the following custom settings: GCC_PREPROCESSOR_DEFINITIONS… >>> More
CVE-2012-0444 Memory corruption vulnerability in Ogg Vorbis

as seen on Oracle Blogs - Search for 'Oracle Blogs'
CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2012-0444 Memory corruption vulnerability 10.0 libvorbis Solaris 11 11/11 SRU 8.5 Solaris 10 SPARC: 148006-01 X86: 148007-01 This notification describes vulnerabilities fixed in third-party components that are included in Sun's… >>> More
Is gstreamer the best encoder for vorbis or is there a better encoding engine I should use?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have sound juicer installed and I want to rip to vorbis.ogg. Is gstreamer the best encoder for vorbis or is there a better encoding engine I should use. The default gstreamer profile is audio/x-raw-float,rate=44100,channels=2 ! vorbisenc name=enc quality=0.5 ! oggmux I am going to raise the… >>> More
Ogg (theora / vorbis) playback in Firefox 3.6

as seen on Stack Overflow - Search for 'Stack Overflow'
I have this html5 code, with a MP4 for Chrome (working), an OGG for Firefox (failing) and the same ogg via a java applet for Internet Explorer (working): <video width="848" height="480" controls="controls" autoplay="true" <source src="vernissage_cpal_2009.mp4" type="video/mp4"… >>> More

Related posts about ogg

How to convert .ogg to .mp3?

as seen on Super User - Search for 'Super User'
Ubuntu ripped a CD for me into audio files but they are all .ogg format which I can't play on my MP3 player. How can I convert .ogg files to .mp3 files? >>> More
Why is my ogg bigger then my m4a?

as seen on Super User - Search for 'Super User'
i am using ffmpeg.exe -i 0123456789 -ab 192k out.m4a ffmpeg.exe -i 0123456789 -f wav - | oggenc2.exe - -r -q 6 -o out.ogg (0123456789 has no extension). My m4a output is 14,608kb while my ogg output is 19,809kb why? AFAIK -q 6 is roughly 192kb. So it should be about even. I could see one file… >>> More
Add subtitles to Ogg Video

as seen on Super User - Search for 'Super User'
I've started to convert my DVD collection to Ogg Video (OGV) and it works so far quite good. However, I heard that I can embed the subtitles inside the OGV-file as well. How can I do this on Linux? On Windows there are several applications but on Linux not so much. Any examples would be appreciated… >>> More
Embed album art in OGG through command line in linux

as seen on Super User - Search for 'Super User'
I want to convert my music from flac to ogg, and currently oggenc does that perfectly except for album art. Metaflac can output album art, however there seems to be no command line tool to embed album art into ogg. MP3Tag and EasyTag are able to do it, and there is a specification for it here which… >>> More
Play ogg inside a page?

as seen on Stack Overflow - Search for 'Stack Overflow'
I was pretty surprised when i saw http://www.vorbis.com/music/Hydrate-Kenny_Beltrey.ogg link not give me a download option but had a player that was not flash playing the audio back. (FireFox) Is there a way i can embed this onto a page? >>> More