Mplayer Not Playing Audio (& Other Stuff)

[lardman]

You could try passing one of the verbose switches (-v at a guess, possibly with a number) and it will tell you exactly what's gone wrong.

I think you may be right about the encoding. This message:

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Cannot find codec matching selected -vo and video format 0x34504D46

Gives a fourCC of "fmp4".

I've never heard of that one (though it does exist - I did a quick google).

Looks like mplayer doesn't recognise it either.


Si

[grog]

You could try passing one of the verbose switches (-v at a guess, possibly with a number) and it will tell you exactly what's gone wrong.

I tried that. Here's what (I think) are the relevant sections:

Code: [Select]

==> Found video stream: 0
====== STREAM Header =====
Type: vids   FCC: FMP4 (34504D46)
Flags: 0
Priority: 0   Language: 0
InitialFrames: 0
Rate: 15/1 = 15.000
Start: 0   Len: 81286
Suggested BufferSize: 35863
Quality 0
Sample size: 0
==========================
found 'bih', 40 bytes of 40
======= VIDEO Format ======
  biSize 40
  biWidth 320
  biHeight 240
  biPlanes 1
  biBitCount 24
  biCompression 877677894='FMP4'
  biSizeImage 230400
===========================But there doesn't seem (to me) to be much more info.

I think you may be right about the encoding. This message:

Code: [Select]

Cannot find codec matching selected -vo and video format 0x34504D46

Gives a fourCC of "fmp4".

I've never heard of that one (though it does exist - I did a quick google).

Looks like mplayer doesn't recognise it either.[div align=\"right\"][{POST_SNAPBACK}][/a][/div]

I was looking at that too. I checked the codecs list for mpeg4:

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grog:$ mplayer -vc help | grep "mpe*g[-\. ]*4"
ff4xm       ffmpeg    working   FFmpeg 4XM video  [4xm]
ffdivx      ffmpeg    working   FFmpeg DivX;-) (MS MPEG-4 v3)  [msmpeg4]
ffmp42      ffmpeg    working   FFmpeg M$ MPEG-4 v2  [msmpeg4v2]
ffmp41      ffmpeg    working   FFmpeg M$ MPEG-4 v1  [msmpeg4v1]
ffodivx     ffmpeg    working   FFmpeg MPEG-4  [mpeg4]
mpeg4ds     dshow     working   Microsoft MPEG-4 v1/v2  [mpg4ds32.ax]
mpeg4       vfw       working   Microsoft MPEG-4 v1/v2  [mpg4c32.dll]

qtmpeg4     qtvideo   crashing  win32/quicktime MPEG-4 decoder  [QuickTime.qts]And there's no such as 'fmp4' there.

One thing I'm going to try later (when I get back to my home machine) is to reload the codecs. I'm currently using the [a href=\"http://www.mplayerhq.hu/MPlayer/releases/codecs/windows-all-20050412.zip]windows all[/url], but maybe there's a difference between that & the windows essential that's messing things up(?). So I'm going to move all the codec files out of the way & put just the essential package in place & see if that makes a difference.

thks

[grog]

OK, I finally got it. I had to sign on to the mencoder mailing list & ask, where I was (politely) directed to mplayer FAQ, where my problem was spelt out in plain english .

The short form. To support newer versions of mplayer, one has to specify '-ffourcc XVID' to force the video tag value to what mplayer can recognize.

My Z is now happily playing my converted videos! YAH!!

Thanks lardman for your help. I've added a comment to the OZ FAQ.

[Storm]

Either specify -ac mad explicitly, or put 'ac mad' in the mplayer conf file (whose name escapes me I'm afraid).

Si
[div align=\"right\"][{POST_SNAPBACK}][/a][/div]

I was having the same problem, and found a typo the /usr/etc/mplayer/mplayer.conf. (This is in Hentges 3.5.4rc.) The contents of the file are as follows:

Code: [Select]

c=mad
ao=oss
Change it to read

Code: [Select]

ac=mad
ao=oss
Viola! I have sound on my videos.

I do have a related question. I have been encoding videos like a madman since I fixed this. Most of them come just fine with respect to rotation (I'm using [a href=\"http://www.cs.unc.edu/~hensley/zaurus/encode.html]mencoder[/url] to encode), though every once in a while the Zaurus doesn't rotate them, instead of coming out in 320x240, the vids are 240x320, and I haven't found a cause for it. Anyone else seen this?

--Storm