[MPlayer-users] lossless codecs make bigger files than raw DV ?!
Louis-David Mitterrand
vindex at apartia.org
Tue Feb 3 17:22:10 CET 2004
I am trying to encode DV (from dvgrab) capture files to a lossless
video/audio format for storage. What is the best format?
I have tried to encode to huffyuv but the resulting file is MUCH larger
than the source file:
mencoder -oac lavc -ovc lavc -lavcopts vcodec=huffyuv:format=422P:acodec=mp3 file.dv2 -o file.huffyuv
file.dv2 is 1.4G and file.huffyuv is around 3.8G. How come?
I've also tried with vcodec=ffv1 but the size is around 3G.
Here is the mencoder output:
CPU: Intel Pentium 4/Xeon/Celeron Northwood 2393 MHz (Family: 8, Stepping: 7)
Detected cache-line size is 64 bytes
MMX2 supported but disabled
SSE2 supported but disabled
CPUflags: Type: 8 MMX: 1 MMX2: 0 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 0
Compiled for x86 CPU with extensions: MMX SSE
Reading /home/ldm/.mplayer/mencoder_codecs.conf: Can't open '/home/ldm/.mplayer/mencoder_codecs.conf': No such file or directory
Reading /etc/mplayer/mencoder_codecs.conf: 61 audio & 169 video codecs
File not found: 'frameno.avi'
Failed to open frameno.avi
Reading config file /home/ldm/.mplayer/mencoder: No such file or directory
font: can't open file: /home/ldm/.mplayer/font/font.desc
Font /usr/share/mplayer/font/font.desc loaded successfully! (206 chars)
success: format: 0 data: 0x0 - 0x56753700
AVI file format detected.
VIDEO: [dvsd] 720x576 24bpp 25.000 fps 28800.0 kbps (3515.6 kbyte/s)
[V] filefmt:3 fourcc:0x64737664 size:720x576 fps:25.00 ftime:=0.0400
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 2 ch, 16 bit (0x10), ratio: 192000->192000 (1536.0 kbit)
Selected audio codec: [pcm] afm:pcm (Uncompressed PCM)
==========================================================================
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1 (-1=autodetect) osd: 1
==========================================================================
Opening video decoder: [dshow] DirectShow video codecs
Decoder supports the following YUV formats: YUY2 UYVY
Decoder is capable of YUV output (flags 0x9)
VDec: vo config request - 720 x 576 (preferred csp: Packed YUY2)
[PP] Using codec's postprocessing, max q = 4.
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 1 -> 1
SwScaler: BICUBIC scaler, from Packed YUY2 to Planar 422P using MMX
videocodec: libavcodec (720x576 fourcc=55594648 [HFYU])
Selected video codec: [qdv] vfm:dshow (Sony Digital Video (DV))
==========================================================================
Building audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/16bit...
Writing AVI header...
Pos: 15.9s 398f ( 4%) 28fps Trem: 5min 3996mb A-V:0.064 [90297:224]
--
I route therefore you are.
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