[theora] RE: ignoring audio in player_example

[Mayer, Jim]

OK... I've since discovered "oggsplit" and removed the audio.  The
"oggsplit" routine complained about the video source I was using so I
switched to another.  Interestingly, when I attempted to play the output
of "oggsplit" on the original video I got the same green rectangle that
I saw here.

 

The problem file was "senate_proceeding_09-17-07.ogg.anx" from
http://metavid.ucsc.edu/.  The "md5sum" of the file I downloaded was:

 

454fa0117f0e1fb432f2c4a956712d6b  senate_proceeding_09-17-07.ogg.anx

 

I have other problems but they deserve a different subject line.

 

-- Jim

 

________________________________

From: Mayer, Jim 
Sent: Tuesday, September 25, 2007 6:14 PM
To: 'theora at xiph.org'
Subject: ignoring audio in player_example

 

I'm interested in ignoring the audio stream in a theora encoded file.
My first attempt was to remove the test for vorbis:

 

      /* identify the codec: try theora */

      if(!theora_p && theora_decode_header(&ti,&tc,&op)>=0){

        /* it is theora */

        memcpy(&to,&test,sizeof(test));

        theora_p=1;

      }else if(!vorbis_p && vorbis_synthesis_headerin(&vi,&vc,&op)>=0){

        /* it is vorbis */

        memcpy(&vo,&test,sizeof(test));

        vorbis_p=1;

      }else{

        /* whatever it is, we don't care about it */

        ogg_stream_clear(&test);

      }

 

I simply commented out the "else if (! vorbis_p &&" line.

 

Unfortunately, the resulting executable displayed a green rectangle and,
when interrupted, crashes.  Clearly I am doing something very wrong!

 

Any thoughts?  I'm quite new to Theora.

 

Thanks.

 

-- Jim

 

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