[mythtv-users] Problems get thumbnails for mythburn

[David Asher]

yeah, the way animated menus appear to work is extracting a BUNCH of 
thumbnails, adding them to the menu, and making a mpg out of the menu 
frames.

all the thumbnails are green for me so i get a movie which looks like a 
static green thumbnail, but is actually a constantly changing set of 
green thumbnails.

sigh.  I'm gonna have to recompile transcode w/a TON of debug prints.

I've figured out that the apache transcode is getting different rsults 
when probing the .mpg:

from probe_stream.c:

    case TC_MAGIC_VOB:     // VOB program stream
      probe_pes(ipipe);

      if(verbose & TC_DEBUG) fprintf(stderr, "att0=%d, att1=%d\n", 
ipipe->probe_info->ext_attributes[0], ipipe->probe_info->ext_attributes[1]);

from the logs i posted, att1 has a different value (0 under mythweb, 94 
in xterm)

I think that difference is the result of the xterm run printing the 
following:

SCR=       0 (       0) unit=0 @ offset     0.0000 (sec)

during the probe_pes call, which appears to mean it recognized the mpg 
as a VOB stream.  the mythweb version does NOT.

that's all I've got so far.

David.

Neil Bird wrote:
> Around about 13/02/06 22:14, David Asher typed ...
>   
>> Most things are working, but the thumbnails are all coming out green 
>> from transcode.  Here's the really odd part, however: the transcode 
>> command run from an xterm works correctly!  It only fails when run from 
>> mythweb.  To try and rule out permission issues, I su'ed to the apache 
>> user (switched to bash from nologin) and ran the same command and it 
>> still worked!  It ONLY produces green thumbnails when run from mythweb.  
>> I've run out of ideas how to debug this.
>>     
>
>    Ah, that's the last thing† I've got to look at on my system.  I assumed the 
> 'green' icons where indicative of a basic failure as opposed to an incorrect 
> extraction.  Not looked at it yet, but glad to know I'm not alone!
>
>    I got the same static greenies when trying to get animated thumbs.
>
>
> † - not strictly true;  main 'main menu' seems to always be shorter than it 
> ought to be (sometimes loops after only a few seconds).
>
>   
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