[MPlayer-users] Re: [-] TV-recording with mencoder, "video-buffer full"

Rainer Hantsch office at hantsch.co.at
Wed Mar 9 09:30:28 CET 2005

On Tue, 8 Mar 2005, Matthias Wieser wrote:

| Higher than what? The CPU load of pp=[md|fd|lb] is quite low, the CPU load
| of "kendeint" is a bit higher.

Well, when I use my extraordinary image size of 688px, it needed ~2-3 seconds
to see 25fps here. Also, the CPU load was around 70-80% max.

With 720x586px I can watch how fps climbs up really slowly and reaches 25fps
not before 10 seconds. I am afraid that I will not have all frames recorded
during this time. Is this true, or is this an average value? Also, the
CPU-idle is often below 5%. Critical?

Here a snippet of mencoder's output, just before the above
line... Maybe this helps a little bit.

TV detected! ;-)
Selected driver: v4l
 name: Video 4 Linux input
 author: Alex Beregszaszi <alex at naxine.org>
 comment: under development
Selected device: BT878(Hauppauge (bt878))
 Capabilites: capture tuner overlay clipping frameram scales
 Device type: 235
 Supported sizes: 48x32 => 924x576
 Inputs: 4
  0: Television: tuner audio tv camera  (tuner:1, norm:pal)
  1: Composite1: audio camera  (tuner:0, norm:pal)
  2: S-Video: audio camera  (tuner:0, norm:pal)
  3: Composite3: audio camera  (tuner:0, norm:pal)
Using input 'Television'
[V] filefmt:9  fourcc:0x32315659  size:720x576  fps:25,00  ftime:=0,0400
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 1 ch, 16 bit (0x10), ratio: 96000->96000 (768,0 kbit)
Selected audio codec: [pcm] afm:pcm (Uncompressed PCM)
Opening video filter: [expand=-1:-1:-1:-1:1]
Expand: -1 x -1, -1 ; -1  (-1=autodetect) osd: 1
Opening video filter: [crop=720:560]
Crop: 720 x 560, -1 ; -1
Opening video filter: [pp=fd]
Opening video filter: [denoise3d=7:5:9]
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 720 x 576 (preferred csp: Planar YV12)
[PP] Using external postprocessing filter, max q = 6.
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
videocodec: libavcodec (720x560 fourcc=58564944 [DIVX])
Selected video codec: [rawyv12] vfm:raw (RAW YV12)
MP3 audio selected
Building audio filter chain for 48000Hz/1ch/16bit -> 48000Hz/1ch/16bit...
Writing AVI header...

Pos:  40,4s   1008f ( 0%)  25fps Trem:   0min   0mb  A-V:0,000 [2268:127]


  Ing. Rainer Hantsch

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