[FFmpeg-devel] Buffer underflow error + possible patch

[Diep Ho]

I have encouter some message 

 

buffer underflow i=1 bufi=0 size=24075

buffer underflow i=1 bufi=2032 size=24075

buffer underflow i=1 bufi=4073 size=24075

......

 

Which resulted from the function remove_decoded_packets in 

libavformat/mpegenc.c. It attempts to remove a packet that is only
partial provided.

 

Can I delay the removal of this very first packet using the following
patch in order to avoid the above annoying message? 

 

I've successfully done the full-test.

 

Best rgds,

 

DHO

 

 

Index: libavformat/mpegenc.c

===================================================================

--- libavformat/mpegenc.c         (revision 14725)

+++ libavformat/mpegenc.c      (working copy)

@@ -998,8 +998,10 @@

 

         while((pkt_desc= stream->predecode_packet)

               && scr > pkt_desc->dts){ //FIXME > vs >=

-            if(stream->buffer_index < pkt_desc->size ||

-               stream->predecode_packet == stream->premux_packet){

+                 if (stream->predecode_packet == stream->premux_packet)

+                             break;

+

+            if(stream->buffer_index < pkt_desc->size){

                 av_log(ctx, AV_LOG_ERROR,

                        "buffer underflow i=%d bufi=%d size=%d\n",

                        i, stream->buffer_index, pkt_desc->size);

 

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