[MPlayer-users] how do you specify the path in mplayer's "mf:" parameter - verbose output included

[David Hepburn]

Thanks Stephen. I ended up writing an AutoHotKey script that changes the 
working directory prior to running mplayer. That did the job but would still 
be interested in knowing how mplayer could do it directly.
Interestingly, the "loop 425" option was the only way I could get it to show 
a JPG for 10 secs. Would seem the "-mf fps=1 -loop 0.1" way must be a Linux 
thing too as it doesn't work on Windows - that just plays the JPG for a 
split second no matter what value I put in the loop.

--------------------------------------------------
From: "Stephen Mollett" <molletts-at-yahoo.com at ffmpeg.org>
Sent: Thursday, July 7, 2016 4:56 AM
To: "MPlayer usage questions, feature requests, bug reports" 
<mplayer-users at mplayerhq.hu>
Subject: Re: [MPlayer-users] how do you specify the path in mplayer's "mf:" 
parameter - verbose output included

> Hi Dave,
>
> On 04/07/16 23:17, David Hepburn wrote:
>>> ... have you tried using forward slashes in the path ...
>> yep tried that - still gets ignored...
>
> Hm, interesting. I've borrowed a Windows laptop from a friend and had a
> poke around.
>
> It seems that part of MPlayer recognises either forward- or backslashes
> - it correctly says:
>
> [mf] number of files: 1 (4)
>
> when the file exists but then the demuxer crashes with a segmentation
> fault, unless the file also exists in the current working directory, in
> which case it uses that copy instead. (It works fine on Linux so it's
> definitely related to running on Windows.)
>
> I've included the output of mplayer -v for the segfault case. It doesn't
> look terribly informative to me. Anyone with a knowledge of the code
> base and the necessary Windows toolchain who feels like poking around -
> see the end of this message.
>
> As a workaround, you might be able to use a wrapper script - a batch
> file to change directory to where the image is, call MPlayer from there,
> then change back afterwards. Something like this might work:
>
> ---- Start mp.cmd ----
>
> @echo off
>
> pushd "%~dp1"
>
> "C:\folder1\mplayer.exe" "mf://%~nx1" -mf fps=1 -loop 425
>
> popd
>
> ---- End mp.cmd ----
>
> Just call the batch file with the name of the media file as its argument
> and it should work.
>
> That's obviously a very basic case which isn't very flexible but it
> might point you in the right direction. (You could use "shift" to go
> through a list of files provided on the command line. The "%~dp1" pulls
> out the drive letter and path from "%1" and the "%~nx1" gets the
> filename and extension. Unfortunately, you can't use these operators
> directly on normal variables but but you could use a dummy "for" loop to
> apply them to a variable - they do work on the the pseudo-variables in a
> for loop.)
>
> Stephen
>
> ---- mplayer -v output ----
>
> MPlayer sherpya-r37875+gce466d0-5.4.0 (C) 2000-2016 MPlayer Team
>
> CPU vendor name: GenuineIntel  max cpuid level: 2
>
> CPU: Intel(R) Celeron(R) M processor         1.40GHz (Family: 6, Model:
> 13, Stepping: 8)
>
> extended cpuid-level: 8
>
> extended cache-info: 67125312
>
> Detected cache-line size is 64 bytes
>
> Testing OS support for SSE... yes.
>
> CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNowExt: 0 SSE: 1 SSE2: 1 SSE3: 0
> SSSE3: 0 SSE4: 0 SSE4.2: 0 AVX: 0
>
> Compiled with runtime CPU detection.
>
> Setting PATH to
> C:\Users\Stephen\Downloads\MPlayer-generic-r37875+gce466d0\MPlayer-generic-r37875+gce466d0\codecs
>
> get_path('codecs.conf') ->
> 'C:/Users/Stephen/Downloads/MPlayer-generic-r37875+gce466d0/MPlayer-generic-r37875+gce466d0/mplayer/codecs.conf'
>
> Reading optional codecs config file
> C:/Users/Stephen/Downloads/MPlayer-generic-r37875+gce466d0/MPlayer-generic-r37875+gce466d0/mplayer/codecs.conf:
> No such file or directory
>
> Using built-in default codecs.conf.
>
> init_freetype
>
> Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay
>
> get_path('fonts') ->
> 'C:/Users/Stephen/Downloads/MPlayer-generic-r37875+gce466d0/MPlayer-generic-r37875+gce466d0/mplayer/fonts'
>
> Configuration: --prefix=/invalid --host-cc=gcc --cc=i686-w64-mingw32-gcc
> --as=i686-w64-mingw32-as --ar=i686-w64-mingw32-ar
> --nm=i686-w64-mingw32-nm --ranlib=i686-w64-mingw32-ranlib
> --windres=i686-w64-mingw32-windres --enable-cross-compile
> --enable-runtime-cpudetection --enable-static --enable-postproc
> --disable-vidix --disable-inet6 --enable-gnutls --enable-dvdnav
> --enable-dvdread --enable-bluray --enable-menu --enable-faac
> --disable-faac-lavc --enable-libfdk-aac
> --extra-cflags=-I/usr/i686-w64-mingw32/live --with-arch=i486
> --with-tune=generic --disable-fast-clz
>
> CommandLine: '-v' 'mf://E:/My Stuff/nobrain.jpg' '-mf' 'fps=1' '-loop' 
> '10'
>
> Using Windows native timing
>
> get_path('input.conf') ->
> 'C:/Users/Stephen/Downloads/MPlayer-generic-r37875+gce466d0/MPlayer-generic-r37875+gce466d0/mplayer/input.conf'
>
> Parsing input config file
> C:/Users/Stephen/Downloads/MPlayer-generic-r37875+gce466d0/MPlayer-generic-r37875+gce466d0/mplayer/input.conf
>
> Input config file
> C:/Users/Stephen/Downloads/MPlayer-generic-r37875+gce466d0/MPlayer-generic-r37875+gce466d0/mplayer/input.conf
> parsed: 92 binds
>
> get_path('nobrain.jpg.conf') ->
> 'C:/Users/Stephen/Downloads/MPlayer-generic-r37875+gce466d0/MPlayer-generic-r37875+gce466d0/mplayer/nobrain.jpg.conf'
>
>
>
> Playing mf://E:/My Stuff/nobrain.jpg.
>
> get_path('sub/') ->
> 'C:/Users/Stephen/Downloads/MPlayer-generic-r37875+gce466d0/MPlayer-generic-r37875+gce466d0/mplayer/sub/'
>
> WINSOCK2 init: 0
>
> STREAM: [mf] mf://E:/My Stuff/nobrain.jpg
>
> STREAM: Description: Multiple files input
>
> STREAM: Author: Benjamin Zores, Albeu
>
> STREAM: Comment:
>
> MF file format detected.
>
> [mf] search expr: E:/My Stuff/nobrain.jpg*
>
> [mf] number of files: 1 (4)
>
> Fontconfig warning: line 146: blank doesn't take any effect anymore.
> please remove it from your fonts.conf
>
>
>
>
>
> MPlayer interrupted by signal 11 in module: demux_open
>
> - MPlayer crashed by bad usage of CPU/FPU/RAM.
>
>  Recompile MPlayer with --enable-debug and make a 'gdb' backtrace and
>
>  disassembly. Details in
> DOCS/HTML/en/bugreports_what.html#bugreports_crash.
>
> - MPlayer crashed. This shouldn't happen.
>
>  It can be a bug in the MPlayer code _or_ in your drivers _or_ in your
>
>  gcc version. If you think it's MPlayer's fault, please read
>
>  DOCS/HTML/en/bugreports.html and follow the instructions there. We
> can't and
>
>  won't help unless you provide this information when reporting a
> possible bug.
>
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