[Ffmpeg-devel] Differences between mencoder and ffmpeg whenencoding using x264
Erik Slagter
erik
Fri Feb 24 18:13:36 CET 2006
On Tue, 2006-02-21 at 11:09 +0000, Robert Swain wrote:
> > ffmpeg mencoder
> >
> > cabac=0 cabac=1
> > ref=1 ref=1
> > deblock=0:0:0 deblock=1:0:0
> > analyse=0x1:0 analyse=0x1:0x111
> > me=dia me=hex
> > subme=6 subme=5
> > brdo=0 brdo=0
> > mixed_ref=0 mixed_ref=0
> > me_range=4 me_range=16
> > chroma_me=0 chroma_me=1
> > trellis=0 trellis=1
> > 8x8dct=0 8x8dct=0
> > cqm=0 cqm=0
> > chroma_qp_offset=0 chroma_qp_offset=0
> > slices=1 slices=1
> > nr=0 nr=0
> > bframes=0 bframes=0
> > keyint=12 keyint=250
> > keyint_min=7 keyint_min=25
> > scenecut=0 scenecut=40
> > rc=cbr rc=cbr
> > bitrate=3000 bitrate=3000
> > ratetol=1.3 ratetol=1.0
> > rceq='tex^qComp' rceq='blurCplx^(1-qComp)'
> > qcomp=0.50 qcomp=0.60
> > qpmin=2 qpmin=10
> > qpmax=31 qpmax=51
> > qpstep=3 qpstep=2
> > vbv_maxrate=9000 vbv_maxrate=9000
> > vbv_bufsize=65536 vbv_bufsize=8000
> > ip_ratio=1.25 ip_ratio=1.40
>
> So...
>
> -ac
Huh? -ac is actually number of audio channels, another one that needs to
be renamed... Suggestions? How about simply calling the non-ffmpeg
option "cabac"?
-coder 1 works, but is not quite readable.
> -partitions parti4x4+partp8x8+partb8x8
It looks like ffmpeg has separate flags for x264 for this:
-parti4x4 E.V..
-parti8x8 E.V..
-partp4x4 E.V..
-partp8x8 E.V..
-partb8x8 E.V..
Will try to get mencoder style output out of ffmpeg with these options
shortly.
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