[MPlayer-users] Can't "-vf scale=xxx" in mencoder

[Giacomo Comes]

On Mon, Sep 25, 2006 at 02:19:53AM -0700, zoiks2004-mplayer at yahoo.com wrote:
> I get a segfault whenever I try to use the -vf
> scale=xxx option.  Using other filters seems to work,
> like pp=xxx.  I'm trying to scale the video down by a
> factor of 2 in each dimension.  It's happening when I
> scale using either xvid video encoding or lavc(mpeg4).
> 
> mplayer plays the video fine and results with mencoder
> without "-vf scale..." are fine.
> 
> The following is an example text output (testfile.nuv
> is an mpeg with mp3 audio encoding and mpeg4 video
> encoding, a la mythtv).  GDB text follows.
> 
> ----------------------------------------
> mencoder testfile.nuv -v -oac copy -ovc lavc -lavcopts
> vbitrate=600:vcodec=mpeg4 -vf scale=360:240 -o
> testout.avi
> 
> MEncoder 1.0pre8-3.3.4 (C) 2000-2006 MPlayer Team

Try to compile mplayer using gcc 3.4.x.
I had the same kind of problem using gcc 3.3.1.
Now I use gcc 3.4.6.

Giacomo

> CPU:               Intel(R) Pentium(R) 4 CPU 2.40GHz
> (Family: 15, Model: 2, Stepping: 7)
> CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0
> SSE: 1 SSE2: 1
> Compiled for x86 CPU with extensions: MMX MMX2 SSE
> SSE2
> 
> init_freetype
> get_path('font/font.desc') ->
> '/home/mythtv/.mplayer/font/font.desc'
> font: can't open file:
> /home/mythtv/.mplayer/font/font.desc
> font: can't open file:
> /usr/local/share/mplayer/font/font.desc
> Using MMX (with tiny bit MMX2) Optimized
> OnScreenDisplay
> [file] File size is 594723666 bytes
> STREAM: [file] testfile.nuv
> STREAM: Description: File
> STREAM: Author: Albeu
> STREAM: Comment: based on the code from ??? (probably
> Arpi)
> success: format: 0  data: 0x0 - 0x2372c352
> Checking for YUV4MPEG2
> ASF_check: not ASF guid!
> Checking for NuppelVideo
> NuppelVideo file format detected.
> ==> Found video stream: 0
> ==> Found audio stream: 0
> Detected MythTV stream
> FOURCC: XVID
> channels=2 bitspersample=16 samplerate=48000
> compression_ratio=11
> [V] filefmt:13  fourcc:0x58564944  size:720x480 
> fps:29.97  ftime:=0.0334
> Opening video filter: [expand osd=1]
> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000,
> round: 1
> Opening video filter: [scale w=360 h=240]
> SwScale params: 360 x 240 (-1=no scaling)
> ==========================================================================
> Opening video decoder: [ffmpeg] FFmpeg's libavcodec
> codec family
> INFO: libavcodec init OK!
> Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg
> MPEG-4)
> ==========================================================================
> Building audio filter chain for 48000Hz/2ch/s16le ->
> 0Hz/0ch/??...
> [libaf] Adding filter dummy
> [dummy] Was reinitialized: 48000Hz/2ch/s16le
> [dummy] Was reinitialized: 48000Hz/2ch/s16le
> audiocodec: framecopy (format=55 chans=2 rate=48000
> bits=16 B/s=16000 sample-4)
> [ffmpeg] aspect_ratio: 1.500000
> VDec: vo config request - 720 x 480 (preferred
> colorspace: Planar YV12)
> Trying filter chain: scale expand lavc
> VDec: using Planar YV12 as output csp (no 0)
> Movie-Aspect is 1.50:1 - prescaling to correct movie
> aspect.
> VO Config
> (720x480->720x480,flags=0,'MPlayer',0x32315659)
> SwScaler: reducing / aligning filtersize 9 -> 8
> SwScaler: reducing / aligning filtersize 9 -> 8
> SwScaler: reducing / aligning filtersize 9 -> 8
> SwScaler: reducing / aligning filtersize 9 -> 8
> 
> SwScaler: BICUBIC scaler, from Planar YV12 to Planar
> YV12 using MMX2
> SwScaler: using 8-tap MMX scaler for horizontal
> luminance scaling
> SwScaler: using 8-tap MMX scaler for horizontal
> chrominance scaling
> SwScaler: using n-tap MMX scaler for vertical scaling
> (YV12 like)
> SwScaler: 720x480 -> 360x240
> REQ: flags=0x401  req=0x0
> REQ: flags=0x401  req=0x0
> videocodec: libavcodec (360x240 fourcc=34504d46
> [FMP4])
> *** [lavc] Allocating mp_image_t, 368x240x12bpp YUV
> planar, 132480 bytes
> *** [expand] Direct Rendering mp_image_t,
> 368x240x12bpp YUV planar, 132480 bytes
> *** [scale] Allocating (slices) mp_image_t,
> 720x480x12bpp YUV planar, 518400 bytes
> Segmentation fault
> 
> ----------------------------------------
> 
> cat gdb.txt [uses same args as above]
> 
> [Thread debugging using libthread_db enabled]
> [New Thread 1078741504 (LWP 23611)]
> 
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 1078741504 (LWP 23611)]
> 0x08198da2 in hScale_MMX2 (dst=Variable "dst" is not
> available.
> ) at swscale_template.c:2108
> 2108                    asm volatile(
> 
> Thread 1 (Thread 1078741504 (LWP 23611)):
> #0  0x08198da2 in hScale_MMX2 (dst=Variable "dst" is
> not available.
> ) at swscale_template.c:2108
>         counter = gdbcoms:7: Error in sourced command
> file:
> Cannot access memory at address 0xfffffe7c
> The program is running.  Exit anyway? (y or n)
> 
> ----------------------------------------
> 
> Any help on this is greatly appreciated.  Thanks.
> 
> _______________________________________________
> MPlayer-users mailing list
> MPlayer-users at mplayerhq.hu
> http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users

--