I wrote a plugin which named totem-pps[1] for totem. It's a PPStream[2](it's a chinese content provider) browser plugin. The plugin itself works well on totem 2.28 but the lastest totem silently ignores play requests. So, users can't play videos any more.

Uri shemes used by ppstream are tvod:// and pps://, for example:
tvod://3eca151e2e516fe8e7331f922850dc6899979a52e09cb7a2c24463019e41fd37f277c53a6bff0934ab77a3eaf4b3690a/090921-大学生了没.rm
pps://hwjxehoqeb5ymigt2aqa.pps/csi纽约第2季-01.wmv

I found the problem is in totem_pl_parser_parse_internal() in file plparse/totem-pl-parser.c from line 1875:
		for (i = 0; i < G_N_ELEMENTS(dual_types) && found == FALSE; i++) {
			if (strcmp (dual_types[i].mimetype, mimetype) == 0) {
				DEBUG(file, g_print ("URI '%s' is dual type '%s'\n", uri, mimetype));
				if (data == NULL) {
					g_free (mimetype);
					mimetype = my_g_file_info_get_mime_type_with_data (file, &data, parser);
					DEBUG(file, g_print ("URI '%s' dual type has type '%s' from data\n", uri, mimetype));
                                        ^^ mimetype is NULL, since tvod:// is not supported by gvfs.
				}
				/* If it's _still_ a text/plain, we don't want it */
				if (mimetype == NULL || strcmp (mimetype, "text/plain") == 0) {
					ret = TOTEM_PL_PARSER_RESULT_IGNORED;
					g_free (mimetype);
					mimetype = NULL;
					break;
                                        ^^ tvod:// uris got ignored.
				}

So, the totem_pl_parser_parse_internal() ignores uri, since it can't figure out it'a playlist or not, and then totem refuse to play any uri which is not supported by gvfs.

Should totem_pl_parser_parse_internal() check the uri is supported by gvfs first? if it is, then try to find mimetype from its content, else just use mimetype returned by g_content_type_guess().



[1]http://cgit.freedesktop.org/~jinghua/totem-pps
[2]http://kan.pps.tv