[MEncoder-users] Trying to get mencoder to output DV format

Dieter freebsd at sopwith.solgatos.com
Sun Feb 19 19:24:35 CET 2006


I can get mencoder to output mpeg4, but I haven't
been able to get mencoder to output DV format video.
Clue needed.  Thanks.

/app/bin/mencoder -tv \          
driver=v4l2:device=/dev/video1:normid=0:chanlist=us-bcast:fps=29.97:\
outfmt=yuy2:width=720:height=480:\
adevice=/dev/dsp:amode=1:forceaudio:audiorate=48000:volume=100 \
-vf expand=720:480 \
 tv://10 \
-of lavf -lavfopts format=dv \
-oac lavc -ovc lavc -lavcopts acodec=pcm_s16le:vcodec=dvvideo \
-o out.dv


[...]
 Current format: BGR24
v4l2: current audio mode is : STEREO
audio block size too low, setting to 16384!
Selected channel: 10 (freq: 193.250)
[V] filefmt:9  fourcc:0x32595559  size:640x480  fps:29.97  ftime:=0.0334
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio: 192000->192000)
Selected audio codec: [pcm] afm:pcm (Uncompressed PCM)
==========================================================================
OK, exit
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1  (-1=autodetect) osd: 1
Opening video filter: [expand w=720 h=480]
Expand: 720 x 480, -1 ; -1  (-1=autodetect) osd: 0
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 640 x 480 (preferred csp: Packed YUY2)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
VDec: using Packed YUY2 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
SwScaler: reducing / aligning filtersize 1 -> 4
SwScaler: reducing / aligning filtersize 1 -> 4
SwScaler: reducing / aligning filtersize 1 -> 1
SwScaler: reducing / aligning filtersize 9 -> 8

SwScaler: BICUBIC scaler, from Packed YUY2 to Planar YV12 using MMX2
videocodec: libavcodec (720x480 fourcc=69767664 [dvvi])
Selected video codec: [rawyuy2] vfm:raw (RAW YUY2)
==========================================================================
VIDEO CODEC ID: 0
Building audio filter chain for 48000Hz/2ch/s16le -> 48000Hz/2ch/s16le...
AUDIO CODEC ID: 0, TAG: 0
Writing AVI header...
[dv @ 0x85636dc]Can't initialize DV format!
Make sure that you supply exactly two streams:
     video: 25fps or 29.97fps, audio: 2ch/48Khz/PCM
WRITTEN HEADER
Forcing audio preload to 0, max pts correction to 0
New_Face failed. Maybe the font path is wrong.
Please supply the text font file (~/.mplayer/subfont.ttf).
subtitle font: load_sub_face failed.




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