[FFmpeg-user] libx264 ignores ffmpeg presets?

Stas Oskin stas.oskin at gmail.com
Mon Jan 2 20:36:25 CET 2012


Hi.

It seems that latest releases of FFMPEG ignore the ffmpeg presets.

An example - I'm trying to re-code RTSP stream using
libx264-ipod320.ffpreset, but resulting output still has cabac enabled:

ffmpeg -fpre
/JavaCore/lib-native/xuggler/share/ffmpeg/libx264-ipod320.ffpreset -i
rtsp://xxx:xxx@xxx.xxx.xx.xxx/live?tcp -vcodec libx264 -b 64000 -f flv
rtmp://xxx.xxx.xxx.xxx

But the resulting output is:
[libx264 @ 0x1d996da0] 264 - core 119 - H.264/MPEG-4 AVC codec - Copyleft
2003-2011 - http://www.videolan.org/x264.html - options: *cabac=1* ref=3
deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11
fast_pskip=1 chroma_qp_offset=-2 threads=1 sliced_threads=0 nr=0 decimate=1
interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2
b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250
keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1
bitrate=64 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40
aq=1:1.00


The version is:
libavutil    50. 44. 0 / 50. 44. 0
  libavcodec   52.123. 0 / 52.123. 0
  libavformat  52.111. 0 / 52.111. 0
  libavdevice  52.  6. 0 / 52.  6. 0
  libavfilter   1. 81. 0 /  1. 81. 0
  libswscale    0. 14. 1 /  0. 14. 1
  libpostproc  51.  2. 0 / 51.  2. 0


On previous versions as below it works fine.
  libavutil     50.34. 0 / 50.34. 0
  libavcore      0.15. 0 /  0.15. 0
  libavcodec    52.98. 0 / 52.98. 0
  libavformat   52.88. 0 / 52.88. 0
  libavdevice   52. 2. 2 / 52. 2. 2
  libavfilter    1.68. 0 /  1.68. 0
  libswscale     0.12. 0 /  0.12. 0

Any idea what has changed?

Thanks in advance!


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