Hi all,
I’m trying to encode some videos to match the 3GP formats offered by YouTube,
but I’m stuck on which command line options to use. I can get ffmpeg to
produce 3GP files, but when I inspect them with mediainfo and compare them to
what I get with YouTube-generated ones, some important bits aren’t coming out
the same. Here’s are the main bits I’m focusing on, which YouTube’s files have:
General
Format : MPEG-4
Format profile : 3GPP Media Release 6 Basic
Codec ID : 3gp6
Video
Format : MPEG-4 Visual
Format profile : Simple@L1
If I use "-vcodec libx264 -profile:v baseline -level 1 -f 3gp” when encoding, I
get the same 3gp6 codec ID up top. But in the Video section, the Format is
“AVC” and the Profile is “Baseline@L1.0”. Or if I use “-vcodec mpeg4 -profile
0 -level 1 -f 3gp” instead, I get 3gp4 rather than 3gp6, but in the Video
section, the format and profile are correct ("MPEG-4 Visual” and "Simple@L1”.)
Any pointers on what I should be using? I’ve been g00gling for hours and
trying all sorts of things, but no luck yet. FWIW, I’m using ffmpeg 2.2.1
compiled by Homebrew on Mac OSX. I’m happy to provide more output of ffmpeg,
mediainfo, or other commands. I’m not really sure what’s relevant. Some will
be tempted to respond with, “Why in the world are you encoding in a crusty old
format such as 3GP? Don’t do that.” I have my reasons, so please bear with me.
:-)
Thanks,
Curtis
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