[MEncoder-users] MPEG encoding hangs

[Stefan Sassenberg]

Hello,

there was a thread in mplayer-users of the same title and problem, that 
ended without clarification.

I have a file that I want to prepare for being burnt on a dvd. I don't 
know if it makes sense to put the result on a dvd but that's another thing.

Now, I try to reformat a file with the following command:
ds9 081220 # mencoder 06-publikum2.mp4 -ovc copy -oac copy -of mpeg 
-mpegopts format=dvd -o ~/movies/new/06-publikum2_dvd.mp4
MEncoder dev-SVN-r28147-4.1.2 (C) 2000-2008 MPlayer Team
CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ (Family: 15, Model: 
107, Stepping: 1)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE SSE2


WARNING: OUTPUT FILE FORMAT IS _MPEG_. See -of help.
success: format: 0  data: 0x0 - 0x11c5ff6
libavformat file format detected.
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x109d710]edit list not starting at 0, a/v 
desync might occur, patch welcome
[lavf] Video stream found, -vid 0
[lavf] Audio stream found, -aid 1
VIDEO:  [avc1]  1280x720  24bpp  29.970 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:44  fourcc:0x31637661  size:1280x720  fps:29.970  ftime:=0.0334
PACKET SIZE: 2048 bytes, deltascr: 43885
videocodec: framecopy (1280x720 24bpp fourcc=31637661)
audiocodec: framecopy (format=ff chans=1 rate=48000 bits=16 B/s=0 sample-0)
Limiting audio preload to 0.4s.
Increasing audio density to 4.
Writing header...

That's where mencoder hangs and it can only be killed with SIGKILL.

I started mencoder with gdb and Ctrl-C'ed it to find out where it hangs. 
It is line 2067 of file libmpdemux/muxer_mpeg.c. I looked into the file, 
there is an endless loop (while(1) ) that never ends for the expression 
s->wf->wFormatTag of value 255.


Maybe there should be a default block in the switch statement or my 
s->wf->wFormatTag should not be 255?

Regards

Stefan