[FFmpeg-devel] Audio Video Sync issue with dvr-ms files

[Michael Niedermayer]

Hi

On Sat, May 12, 2007 at 08:07:02PM -0400, Jonathon Elwood wrote:
[...]
> > also your debuging information is wrong, more specifically the
> > packet_key_frame is complete nonsense
> >
> > see, following are the true frame types as output by the parser,
> > 1 are key frames, the file is ABC_SD.dvr-ms
> >
> > audio 7431 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > video -9223372036854775808 -9223372036854775808 type:1
> > video -9223372036854775808 -9223372036854775808 type:3
> > video -9223372036854775808 -9223372036854775808 type:3
> > audio 7559 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > video -9223372036854775808 -9223372036854775808 type:2
> > video -9223372036854775808 -9223372036854775808 type:3
> > video -9223372036854775808 -9223372036854775808 type:3
> > audio 7655 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > video -9223372036854775808 -9223372036854775808 type:2
> > video -9223372036854775808 -9223372036854775808 type:3
> > video 8138 -9223372036854775808 type:3
> > audio 7751 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > audio 7847 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> > audio -9223372036854775808 -9223372036854775808 type:1
> >
> > this shows clearly that the file begins with key frames like one would
> > expect
> 
> Could you share the code you used for your debug above?  I'd like to
> see how you pulled the frame type from the parser.

--- parser.c	(revision 8781)
+++ parser.c	(working copy)
@@ -168,6 +168,11 @@
     if (index < 0)
         index = 0;
     s->cur_offset += index;
+
+if(*poutbuf_size){
+    av_log(NULL, AV_LOG_ERROR, "new frame %d %Ld %Ld type:%d\n", avctx->codec_type, pts, dts, s->pict_type);
+}
+
     return index;
 }
 

the "new frame 1/0" was then simply replaced by "audio"/"video" for
readablility

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

When you are offended at any man's fault, turn to yourself and study your
own failings. Then you will forget your anger. -- Epictetus
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