[MEncoder-users] Best options for recording x264 1pass?

[socke]

This is not what you asked for, but maybe you consider to use -ovc copy for
the recording and transcode afterwards so that real-time transcoding is not
critical.

Am 28.01.2011 22:28, schrieb Dâniel Fraga:
> 	I always record the "Dog Whisperer" TV show using a regular
> capture board which delivers 640x480 to mencoder using the following
> options:
>
> /usr/local/bin/mencoder -tv
> device=/dev/video1:input=3:norm=pal-m:amode=1:contrast=5:saturation=-10
> -ovc x264 -x264encopts pass=1:crf=26 -oac mp3lame
> -o /home/fraga/src/tvrecord-${TODAY}-${NOW}.avi tv://
>
> 	I have a Core i7 930, 6 GB RAM, 1.5TB Seagate HD.
> 	
> 	But I notice mencoder suffers to maintain the 29.97 fps... it
> takes some minutes to reach 29.97 fps and my last recording, the audio
> was slightly out of sync...
>
> 	Before I used the turbo option and it reaches 29.97 fps in the
> first seconds of recording, but it seems the turbo option was removed.
>
> 	Is there some options I can use to speed this recording?
>
> 	Thanks.
>
> MEncoder SVN-r32789-4.5.1 (C) 2000-2011 MPlayer Team
> 161 audio & 351 video codecs
> success: format: 9  data: 0x0 - 0x0
> TV file format detected.
> Selected driver: v4l2
>  name: Video 4 Linux 2 input
>  author: Martin Olschewski <olschewski at zpr.uni-koeln.de>
>  comment: first try, more to come ;-)
> Selected device: PowerColor RA330
>  Tuner cap: STEREO LANG1 LANG2
>  Tuner rxs: MONO
>  Capabilities:  video capture  VBI capture device  tuner  read/write  streaming
>  supported norms: 0 = NTSC-M; 1 = NTSC-M-JP; 2 = NTSC-443; 3 = PAL-BG; 4 = PAL-I; 5 = PAL-DK; 6 = PAL-M; 7 = PAL-N; 8 = PAL-Nc; 9 = PAL-60; 10 = SECAM-B; 11 = SECAM-G; 12 = SECAM-H; 13 = SECAM-DK; 14 = SECAM-L;
>  inputs: 0 = for debug only; 1 = Television; 2 = Composite1; 3 = S-Video;
>  Current input: 3
>  Current format: BGR24
> v4l2: current audio mode is : STEREO
> v4l2: ioctl set format failed: Invalid argument
> v4l2: ioctl set format failed: Invalid argument
> Audio block size too low, setting to 16384!
> [V] filefmt:9  fourcc:0x59565955  size:640x480  fps:29.970  ftime:=0.0334
> ==========================================================================
> Opening audio decoder: [pcm] Uncompressed PCM audio decoder
> AUDIO: 44100 Hz, 2 ch, s16le, 1411.2 kbit/100.00% (ratio: 176400->176400)
> Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
> ==========================================================================
> Opening video filter: [expand osd=1]
> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
> ==========================================================================
> Opening video decoder: [raw] RAW Uncompressed Video
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> Movie-Aspect is undefined - no prescaling applied.
> [swscaler @ 0x1c01ee0] using unscaled uyvy422 -> yuv420p special converter
> x264 [info]: using SAR=1/1
> x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
> x264 [info]: profile Main, level 3.0
> Selected video codec: [rawuyvy] vfm: raw (RAW UYVY)
> ==========================================================================
> MP3 audio selected.
> Forcing audio preload to 0, max pts correction to 0.
> Pos:   0.1s      2f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
>