[theora] RE: ignoring audio in player_example

Wed Sep 26 14:38:46 PDT 2007

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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