GF_Err gf_isom_remove_track_from_root_od(GF_ISOFile *movie, u32 trackNumber)
{
	GF_List *esds;
	GF_ES_ID_Inc *inc;
	u32 i;
	GF_Err e;

	e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
	if (e) return e;
	if (!movie->moov) return GF_OK;

	if (!gf_isom_is_track_in_root_od(movie, trackNumber)) return GF_OK;

	if (!movie->moov->iods) {
		e = AddMovieIOD(movie->moov, 0);
		if (e) return e;
	}
	switch (movie->moov->iods->descriptor->tag) {
	case GF_ODF_ISOM_IOD_TAG:
		esds = ((GF_IsomInitialObjectDescriptor *)movie->moov->iods->descriptor)->ES_ID_IncDescriptors;
		break;
	case GF_ODF_ISOM_OD_TAG:
		esds = ((GF_IsomObjectDescriptor *)movie->moov->iods->descriptor)->ES_ID_IncDescriptors;
		break;
	default:
		return GF_ISOM_INVALID_FILE;
	}

	//get the desc
	i=0;
	while ((inc = (GF_ES_ID_Inc*)gf_list_enum(esds, &i))) {
		if (inc->trackID == (u32) gf_isom_get_track_id(movie, trackNumber)) {
			gf_odf_desc_del((GF_Descriptor *)inc);
			gf_list_rem(esds, i-1);
			break;
		}
	}
	//we don't remove the iod for P&Ls and other potential info
	return GF_OK;
}
GF_Err gf_isom_remove_track_from_root_od(GF_ISOFile *movie, u32 trackNumber)
{
	GF_List *esds;
	GF_ES_ID_Inc *inc;
	u32 i;
	GF_Err e;

	e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
	if (e) return e;
	if (!movie->moov) return GF_OK;

	if (!gf_isom_is_track_in_root_od(movie, trackNumber)) return GF_OK;

	if (!movie->moov->iods) {
		e = AddMovieIOD(movie->moov, 0);
		if (e) return e;
	}
	switch (movie->moov->iods->descriptor->tag) {
	case GF_ODF_ISOM_IOD_TAG:
		esds = ((GF_IsomInitialObjectDescriptor *)movie->moov->iods->descriptor)->ES_ID_IncDescriptors;
		break;
	case GF_ODF_ISOM_OD_TAG:
		esds = ((GF_IsomObjectDescriptor *)movie->moov->iods->descriptor)->ES_ID_IncDescriptors;
		break;
	default:
		return GF_ISOM_INVALID_FILE;
	}

	 
	i=0;
	while ((inc = (GF_ES_ID_Inc*)gf_list_enum(esds, &i))) {
		if (inc->trackID == (u32) gf_isom_get_track_id(movie, trackNumber)) {
			gf_odf_desc_del((GF_Descriptor *)inc);
			gf_list_rem(esds, i-1);
			break;
		}
	}
	 
	return GF_OK;
}