[MPlayer-users] Old divx files break, MOV to MP4 problem

[Casey King]

[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]

A'rpi-

Problem number one is solved. Michael showed me the way with -lavdopts
bug=1. I didn't see the relevance when I first saw this in the doc, but now
get it. Michael, I really appreciate the help.

As for the MP4 files, I'll track down abit more. I just downloaded the elope
video from Apple's site and it played fine with all 4 of the tracks there.
But when I extracted the video and audio tracks and combined in a new MOV I
hit a segmentation fault. A recompress with a different source and using the
"Export to MPEG-4" shortcut was the route that resulted in a format
unreadable by mplayer.

Thanks for the quick reply.

-Casey

> Hi,
> 
> upload sample files for both problem
> 
>> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>> First, great work. I've been running mplayer on our Alchemy embedded Mips
>> SOC for over a year now with great success.
>> 
>> I've seen a couple of problems with MPlayer0.90pre6.
>> 
>> 1. Some old opendivx bitstreams (made with flask long ago) don't play
>> correctly anymore. These have always played fine (with both opendivx and
>> ffmpeg) up through at least Mplayer0.90pre4. An example of what gets dumped
>> out is:
>> 
>> ...
>> VIDEO:  [DIVX]  176x80  0bpp  23.98 fps  137.3 kbps (16.8 kbyte/s)
>> ==========================================================================
>> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
>> Detected video codec: [ffodivx] vfm:5 (FFmpeg MPEG-4)
>> ==========================================================================
>> Audio: no sound!!!
>> Start playing...
>> scalability not supported
>> no VOP startcode found, frame size was=1821
>> header damaged
>> Error while decoding frame!
>> VDec: vo config request - 176 x 80 (preferred csp: Planar YV12)
>> Movie-Aspect is undefined - no prescaling applied.
>> VO: [fbdev] 176x80 => 176x80 Planar YV12
>> No accelerated colorspace conversion found
>> Error at MB: 4
>> ...
>> 
>> Is it possible that changes to the ffodivx codec to support real MP4 (like
>> QT MP4 movies), will expose decode errors in old OpenDivx movies?
>> 
>> 2. If you take QT6 and export a movie to MPEG-4, then Mplayer will not
>> recognize this as a MOV. Running the movinfo tool indicates a valid mov
>> file, but the check in demuxer.c for MOV fails. I took a look at the mp4
>> movie and it has these tracks in this order, sound (Mpeg4audio), video
>> (Mpeg4video), SDSM, and ODSM. I re-exported a new video only MP4 with
>> Quicktime and it played just fine under mplayer. It used the same codec
>> (ffodivx) as the old divx files want to use so I thought that ffodivx may
>> not play back these old divx files anymore.
>> 
>> For the record, my environment is probably very different from most:
>> 
>> MontaVista Software's Hard Hat Linux 2.0
>> Linux/mips 2.4.17_sherman-pb1500
>> mips unknown
>> libc-2.2.3
>> X not running
>> Video goes to fbdev
>> gcc version 2.95.3 20010315 (release/MontaVista)
>> GNU ld version 2.10.91 (with BFD 2.10.91.0.2)
>> processor               : 0
>> cpu model               : Au1500 V0.0
>> BogoMIPS                : 395.67
>> wait instruction        : no
>> microsecond timers      : yes
>> extra interrupt vector  : yes
>> hardware watchpoint     : yes
>> VCED exceptions         : not available
>> VCEI exceptions         : not available
>> Display ATI Technologies Inc Rage XL (rev 27)
>> 
>> The way I configure mplayer is:
>> 
>> ./configure --disable-xll --disable-sdl --enable-fbdev --disable-big-endian
>> 
>> The way I typically run mplayer is:
>> 
>> Mplayer -vo fbdev -nosound moviename
>> 
>> Thanks.
>> 
>> Casey
>> 
>> 
>> 
>> 
>> 
>> _______________________________________________
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>> 
>> 
> 
> 
> A'rpi / Astral & ESP-team
> 
> --
> Developer of MPlayer, the Movie Player for Linux - http://www.MPlayerHQ.hu
> 
> _______________________________________________
> RTFM!!!  http://www.MPlayerHQ.hu/DOCS
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