@@ -76,15 +76,18 @@ int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,

     int channel_id, timestamp, data_size, offset = 0;

     uint32_t extra = 0;

     enum RTMPPacketType type;

+    int size = 0;

     if (url_read(h, &hdr, 1) != 1)

         return AVERROR(EIO);

+    size++;

     channel_id = hdr & 0x3F;

     if (channel_id < 2) { //special case for channel number >= 64

         buf[1] = 0;

         if (url_read_complete(h, buf, channel_id + 1) != channel_id + 1)

             return AVERROR(EIO);

+        size += channel_id + 1;

         channel_id = AV_RL16(buf) + 64;

     }

     data_size = prev_pkt[channel_id].data_size;

@@ -97,17 +100,21 @@ int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,

     } else {

         if (url_read_complete(h, buf, 3) != 3)

             return AVERROR(EIO);

+        size += 3;

         timestamp = AV_RB24(buf);

         if (hdr != RTMP_PS_FOURBYTES) {

             if (url_read_complete(h, buf, 3) != 3)

                 return AVERROR(EIO);

+            size += 3;

             data_size = AV_RB24(buf);

             if (url_read_complete(h, buf, 1) != 1)

                 return AVERROR(EIO);

+            size++;

             type = buf[0];

             if (hdr == RTMP_PS_TWELVEBYTES) {

                 if (url_read_complete(h, buf, 4) != 4)

                     return AVERROR(EIO);

+                size += 4;

                 extra = AV_RL32(buf);

             }

         }

@@ -138,13 +145,15 @@ int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,

         }

         data_size -= chunk_size;

         offset    += chunk_size;

+        size      += chunk_size;

         if (data_size > 0) {

             url_read_complete(h, &t, 1); //marker

+            size++;

             if (t != (0xC0 + channel_id))

                 return -1;

         }

     }

-    return 0;

+    return size;

 }

 int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,

@@ -153,6 +162,7 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,

     uint8_t pkt_hdr[16], *p = pkt_hdr;

     int mode = RTMP_PS_TWELVEBYTES;

     int off = 0;

+    int size = 0;

     pkt->ts_delta = pkt->timestamp - prev_pkt[pkt->channel_id].timestamp;

@@ -205,6 +215,7 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,

     prev_pkt[pkt->channel_id].extra      = pkt->extra;

     url_write(h, pkt_hdr, p-pkt_hdr);

+    size = p - pkt_hdr + pkt->data_size;

     while (off < pkt->data_size) {

         int towrite = FFMIN(chunk_size, pkt->data_size - off);

         url_write(h, pkt->data + off, towrite);

@@ -212,9 +223,10 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,

         if (off < pkt->data_size) {

             uint8_t marker = 0xC0 | pkt->channel_id;

             url_write(h, &marker, 1);

+            size++;

         }

     }

-    return 0;

+    return size;

 }

 int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,

@@ -110,7 +110,7 @@ void ff_rtmp_packet_destroy(RTMPPacket *pkt);

  * @param chunk_size current chunk size

  * @param prev_pkt   previously read packet headers for all channels

  *                   (may be needed for restoring incomplete packet header)

- * @return zero on success, negative value otherwise

+ * @return number of bytes read on success, negative value otherwise

  */

 int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,

                         int chunk_size, RTMPPacket *prev_pkt);

@@ -123,7 +123,7 @@ int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,

  * @param chunk_size current chunk size

  * @param prev_pkt   previously sent packet headers for all channels

  *                   (may be used for packet header compressing)

- * @return zero on success, negative value otherwise

+ * @return number of bytes written on success, negative value otherwise

  */

 int ff_rtmp_packet_write(URLContext *h, RTMPPacket *p,

                          int chunk_size, RTMPPacket *prev_pkt);