/// <summary>
        /// Handle List elements found in the AVI file. Ignores unknown lists and recursively looks
        /// at the content of known lists.
        /// </summary>
        /// <param name="rp"></param>
        /// <param name="FourCC"></param>
        /// <param name="length"></param>
        private void ProcessAVIList(RiffParser rp, int FourCC, int length)
        {
            RiffParser.ProcessChunkElement pac = ProcessAVIChunk;
            RiffParser.ProcessListElement  pal = ProcessAVIList;

            // Is this the header?
            if ((AviRiffData.ckidAVIHeaderList == FourCC) ||
                (AviRiffData.ckidAVIStreamList == FourCC) ||
                (AviRiffData.ckidINFOList == FourCC))
            {
                while (length > 0)
                {
                    if (false == rp.ReadElement(ref length, pac, pal))
                    {
                        break;
                    }
                }
            }
            else
            {
                // Unknown lists - ignore
                rp.SkipData(length);
            }
        }
        /// <summary>
        /// Handle List elements found in the AVI file. Ignores unknown lists and recursively looks
        ///     at the content of known lists.
        /// </summary>
        /// <param name="rp">
        /// </param>
        /// <param name="FourCC">
        /// </param>
        /// <param name="length">
        /// </param>
        private void ProcessAVIList(RiffParser rp, int FourCC, int length)
        {
            RiffParser.ProcessChunkElement pac = this.ProcessAVIChunk;
            RiffParser.ProcessListElement pal = this.ProcessAVIList;

            // Is this the header?
            if ((AviRiffData.ckidAVIHeaderList == FourCC) || (AviRiffData.ckidAVIStreamList == FourCC) || (AviRiffData.ckidINFOList == FourCC))
            {
                while (length > 0)
                {
                    if (false == rp.ReadElement(ref length, pac, pal))
                    {
                        break;
                    }
                }
            }
            else
            {
                // Unknown lists - ignore
                rp.SkipData(length);
            }
        }
        /// <summary>
        /// Handle List elements found in the AVI file. Ignores unknown lists and recursively looks
        /// at the content of known lists.
        /// </summary>
        /// <param name="rp"></param>
        /// <param name="fourCc"></param>
        /// <param name="length"></param>
        private void ProcessAviList(RiffParser rp, int fourCc, int length)
        {
            RiffParser.ProcessChunkElement pac = ProcessAviChunk;
            RiffParser.ProcessListElement pal = ProcessAviList;

            // Is this the header?
            if ((AviRiffData.CkidAviHeaderList == fourCc)
                || (AviRiffData.CkidAviStreamList == fourCc)
                || (AviRiffData.CkidInfoList == fourCc))
            {
                while (length > 0)
                {
                    if (false == rp.ReadElement(ref length, pac, pal))
                    {
                        break;
                    }
                }
            }
            else
            {
                // Unknown lists - ignore
                rp.SkipData(length);
            }
        }